Polymer Toughening (Plastics Engineering, 30)

Book Description

This work provides comprehensive coverage of the basic theories and hands-on techniques of polymer toughening, demonstrating the similarities in methods of measurement and toughness enhancement found in various classes of polymeric materials, including foams, films, adhesives and moulding grade polymers. It provides a detailed overview, from historical and current points of view, of polymer toughening as practiced in industry, and lays the theoretical groundwork for the analysis and prediction of different modes of toughening.

Toughening of Plastics: Advances in Modeling and Experiments (Acs Symposium Series)

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Toughening of Plastics: Advances in Modeling and Experiments (Acs Symposium Series)

Manufacturer: An American Chemical Society Publication
ProductGroup: Book
Binding: Hardcover

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ASIN: 0841236577

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This book is an overview of the current state of developments in engineering toughened plastics. New theoretical approaches and practical applications as well as advances in epoxy polymers, rubber toughening, polymer blends, and micro and macro concepts are included.

Effect of the core-shell impact modifier shell thickness on toughening PVC.: An article from: Polymer Engineering and Science

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Effect of the core-shell impact modifier shell thickness on toughening PVC.: An article from: Polymer Engineering and Science
Juh-Shyong Lee , and Feng-Chih Chang
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on October 1, 2004. The length of the article is 2861 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: The shell thickness of a core/shell impact modifier is found to be the single most important factor in the toughening of rigid polyvinyl chloride (PVC). When the shell thickness is greater than a critical value of 15.8 nm, these core-shell elastomeric particles are able to remain structurally intact and well dispersed within the PVC matrix after melt blending. However, too thick a shell thickness results in a hard core (high modulus) of these core/shell particles and loss of the rubbery nature required of an efficient impact modifier. Therefore, these over-thick particles can act only as rigid fillers, not as efficient rubbery modifiers. On the other hand, when the shell thickness is less than the critical value of 4.9 nm, too thin a shell layer is simply unable to fully protect and cover the inner rubbery core during vigorous processing conditions, and these core-shell particles tend to connect with one another through the partially exposed core to form a cellular-like structure, thus resulting in poor toughening efficiency. Regardless of the particle size, as long as the shell thickness of these core/shell elastomers is between these two critical values (15.8 nm and 4.9 nm), they all display high efficiency in toughening rigid PVC. Polym. Eng. Sci. 44:1885-1889, 2004. [c] 2004 Society of Plastics Engineers.

Citation Details
Title: Effect of the core-shell impact modifier shell thickness on toughening PVC.
Author: Juh-Shyong Lee
Publication: Polymer Engineering and Science (Refereed)
Date: October 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 10 Page: 1885(5)

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The effects of particle bulk modulus on toughening mechanisms in rubber-modified polymers.: An article from: Polymer Engineering and Science

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The effects of particle bulk modulus on toughening mechanisms in rubber-modified polymers.: An article from: Polymer Engineering and Science
Xiao-Hong Chen , and Yiu-Wing Mai
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on October 1, 1998. The length of the article is 3404 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: The interaction of a blunting mode I plane-strain crack tip with a periodic array of initially spherical rubber particles directly ahead of and parallel to the crack front in the effective medium is studied by the crack tip-particle interaction model. The local stress concentrations responsible for rubber cavitation, matrix crazing and shear yielding are obtained by three-dimensional large deformation elastic-plastic finite element analysis with a sub-modeling technique to explore the relationship between these toughening mechanisms, It is shown that rubber particles can act as stress concentrators to initiate matrix crazing or shear yielding but they behave differently from voids at high triaxiality because of their high bulk modulus. Particle bulk modulus affects significantly the hydrostatic stress inside rubber particles as well as the plastic deformation in the ligament between the crack tip and particles. Rubber cavitation or interface debonding relieves the triaxial stress plane-strain condition so that extensive plastic deformation can be developed in the toughening process.

Citation Details
Title: The effects of particle bulk modulus on toughening mechanisms in rubber-modified polymers.
Author: Xiao-Hong Chen
Publication: Polymer Engineering and Science (Refereed)
Date: October 1, 1998
Publisher: Society of Plastics Engineers, Inc.
Volume: 38 Issue: 10 Page: 1763(7)

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Fracture toughening behavior and mechanical properties of polyphenylene oxide/high-impact polystyrene blends.: An article from: Polymer Engineering and Science

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Fracture toughening behavior and mechanical properties of polyphenylene oxide/high-impact polystyrene blends.: An article from: Polymer Engineering and Science
S.C. Tjong , and Y.C. Ke
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on November 15, 1996. The length of the article is 3817 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Blends of a poly(phenylene oxide) (PPO) with high-impact polystyrene (HIPS) were injection molded. The static mechanical properties and fracture toughness of the blends were determined by means of the uniaxial tension, Brinell hardness and three-point-bending measurements. From the static mechanical test results, it was shown that the yield strength, Young's modulus and hardness values of the PPO/ HIPS blends were considerably higher than those of their PPO and HIPS component polymers. Dynamic mechanical measurements indicated that the PPO/HIPS blends appear to be miscible as shown by the existence of a single glass transition temperature. Furthermore, the J integral method based on ASTM E813-89 procedure was used to characterize the fracture toughness of PPO/HIPS blends. The J integral analysis indicated that the PPO specimen exhibited the lowest fracture toughness ([J.sub.c]). The PPO containing 50 wt% HIPS blend had the highest [J.sub.c]. SEM observations revealed that the crack growth zone of the pure PPO is relatively smooth. However, cavitation of the elastomeric particles and shear band formation were observed in the deformed zones ahead of the crack tip of the PPO with 50 wt% HIPS blend. The cavitation and shear band formation would dissipate bulk strain energy and their formation was responsible for the highest [J.sub.c] value observed in this blend.

Citation Details
Title: Fracture toughening behavior and mechanical properties of polyphenylene oxide/high-impact polystyrene blends.
Author: S.C. Tjong
Publication: Polymer Engineering and Science (Refereed)
Date: November 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n21 Page: p2626(8)

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Irradiation-induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypropylene composites.: An article from: Polymer Engineering and Science

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Irradiation-induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypropylene composites.: An article from: Polymer Engineering and Science
Chuan Guo Ma , Min Zhi Rong , Ming Qiu Zhang , and Klaus Friedrich
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on April 1, 2005. The length of the article is 7102 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Nano-sized calcium carbonate was pretreated with silane coupling agent and then mixed with butyl acrylate that is of larger amount than the nanoparticles. Under [gamma]-irradiation, graft polymerization occurred on the nanoparticle surface, forming a nanocomposite structure consisting of grafted poly(butyl acrylate) (PBA), homopolymerized PBA, and the segregated nanoparticles. It was found that the silane pretreatment significantly promoted the graft reaction. When the grafted nano-CaC[O.sub.3] particles were melt compounded with polypropylene (PP), an obvious synergistic effect, offered by (i) the chemical bonding between the elastomer type grafted PBA and nano-CaC[O.sub.3] and (ii) the deliberately introduced thick interlayer mainly constructed by the homopolymerized PBA, led to a significant increase in notch impact strengths and elongation to break of PP at a rather low content of nano-CaC[O.sub.3]. Meanwhile, the tensile stiffness of the composites was also slightly increased and the yielding strength of the composites was almost unchanged. The results are different from those with conventional rubber-toughened plastics, in which the improvement of ductility is acquired at high additive fraction and a great expense of strength performance. POLYM. ENG. SCI., 45:529-538, 2005. [c] 2005 Society of Plastics Engineers

Citation Details
Title: Irradiation-induced surface graft polymerization onto calcium carbonate nanoparticles and its toughening effects on polypropylene composites.
Author: Chuan Guo Ma
Publication: Polymer Engineering and Science (Refereed)
Date: April 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 4 Page: 529(10)

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The Izod Impact Strength of Modified Methyl Methacryate/Styrene Copolymer Molding and the Toughening Mechanism.(Brief Article): An article from: Polymer Engineering and Science

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The Izod Impact Strength of Modified Methyl Methacryate/Styrene Copolymer Molding and the Toughening Mechanism.(Brief Article): An article from: Polymer Engineering and Science
Akira Takaki , Kaoru Yamazaki , and Ikuo Narisawa
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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Book Description

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on February 1, 2000. The length of the article is 2796 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: The Izod Impact Strength of Modified Methyl Methacryate/Styrene Copolymer Molding and the Toughening Mechanism.(Brief Article)
Author: Akira Takaki
Publication: Polymer Engineering and Science (Refereed)
Date: February 1, 2000
Publisher: Society of Plastics Engineers, Inc.
Volume: 40 Issue: 2 Page: 398

Article Type: Brief Article

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Rubber toughening of poly(lactide) by blending and block copolymerization.: An article from: Polymer Engineering and Science

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Rubber toughening of poly(lactide) by blending and block copolymerization.: An article from: Polymer Engineering and Science
D.W. Grijpma , R.D.A. Van Hofslot , H. Super , A.J. Nijenhuis , and A.J. Pennings
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on November 1, 1994. The length of the article is 7015 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Copolymers of L-lactide with 15 or more mole % D-lactide are amorphous, noncrystallizable hydrolytically degradable materials. These glassy materials are brittle in tension and bending. To make these materials suitable for use as load-bearing devices in biomedical applications, toughness has to be enhanced. This is effectively accomplished by introducing a separate degradable rubber phase in the amorphous matrix. Several approaches have been explored: solution blending and coprecipitation of trimethylene carbonate and [Epsilon]-caprolactone rubbers and poly(lactide), preparation of ABA triblock copolymers and blending of ABA block copolymers with the amorphous poly(lactide) matrix. In all cases very tough materials could be prepared. These materials are easily processable by compression molding at relatively low temperatures.

Citation Details
Title: Rubber toughening of poly(lactide) by blending and block copolymerization.
Author: D.W. Grijpma
Publication: Polymer Engineering and Science (Refereed)
Date: November 1, 1994
Publisher: Society of Plastics Engineers, Inc.
Volume: v34 Issue: n22 Page: p1674(11)

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Toughening mechanisms in annealed high density polyethylene under impact.: An article from: Polymer Engineering and Science

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Toughening mechanisms in annealed high density polyethylene under impact.: An article from: Polymer Engineering and Science
S. Ravi , and K. Takahashi
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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Book Description

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on November 1, 2002. The length of the article is 3879 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Impact fracture behavior of annealed high density polyethylene (HDPE) has been studied. Charpy impact test results show that annealing increases the total fracture energy of HDPE and also that the increase in fracture energy is mainly due to the increase in the propagation energy with annealing time. Microscopic studies have been carried out to elucidate the origin of the rise in the propagation energy of the annealed HDPE. It is found that as annealing time increases, microscopically, the failure is more ductile with the formation of fibrillar structure. Based on the morphological study, it is proposed that the increased toughness observed in annealed HDPE is due to the occurrence of micro-voids (or cavities) as the material yields under mode I dynamic tension. The void generation promotes the formation of fibrous structure, which absorbs greater energy than as-received HDPE.

Citation Details
Title: Toughening mechanisms in annealed high density polyethylene under impact.
Author: S. Ravi
Publication: Polymer Engineering and Science (Refereed)
Date: November 1, 2002
Publisher: Society of Plastics Engineers, Inc.
Volume: 42 Issue: 11 Page: 2146(10)

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Toughening of polybenzoxazine by alloying with urethane prepolymer and flexible epoxy: a comparative study. : An article from: Polymer Engineering and Science

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Toughening of polybenzoxazine by alloying with urethane prepolymer and flexible epoxy: a comparative study. : An article from: Polymer Engineering and Science
Sarawut Rimdusit , Surasak Pirstpindvong , Wiwut Tanthapanichakoon , and Siriporn Damrongsakkul
Manufacturer: Society of Plastics Engineers, Inc.
ProductGroup: Book
Binding: Digital

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ASIN: B0009H2SMW
Release Date: 2005-07-21

Book Description

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on March 1, 2005. The length of the article is 5502 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: The toughness of polybenzoxazine can effectively be improved by alloying with isophorone diisocyanate (IPDI)-based urethane prepolymers (PU) or with flexible epoxy (EPO732). The experimental results, i.e., flexural testing and dynamic mechanical analysis, reveal that the toughness of the alloys of the rigid polybenzoxazine and the PU or the EPO732 systematically increases with the amount of either toughener, due to the addition of more flexible molecular segments in the polymer hybrids. The curing temperature of the benzoxazine resin (bisphenol A-aniline type [BA-a]) at about 225[degrees]C shifts to a higher value when the fraction of BA-a in either alloy decreases. Interestingly, the enhancement in the glass transition temperature ([T.sub.g]) of BA-a/PU alloys is clearly observed, i.e., [T.sub.g] of the BA-a/PU alloys are significantly higher ([T.sub.g] beyond 200[degrees]C) than those of the parent resins, i.e., 165[degrees]C for BA-a and -70[degrees]C for PU. However, this characteristic is not observed in the BA-a/EPO732 alloy systems. The enhanced [T.sub.g] of the BA-a/PU alloy at a 70/30 mass ratio is found to be 220[degrees]C, while that of BA-a/EPO732 at the same mass ratio is observed to be only 95[degrees]C, which further decreases as the content of epoxy fraction increases. Furthermore, the degradation temperature based on 5% weight loss in the thermogravimetric analyzer (TGA) thermograms of the BA-a/PU alloys is found to improve with the presence of the PU, though the opposite trend is observed in the BA-a/EPO732 systems. The char yield of both alloy systems is steadily enhanced with the increased benzoxazine content because the char yield of the polybenzoxazine is inherently higher than that of the two tougheners. Therefore, the polybenzoxazine alloys with the IPDI-based urethane prepolymer, e.g., the 70/30 BA-a/PU, are a promising system for a tough, high thermal stability polymeric network, suitable for both bulk and composite matrix applications. POLYM. ENG. SCI., 45:288-296, 2005. [c] 2005 Society of Plastics Engineers

Citation Details
Title: Toughening of polybenzoxazine by alloying with urethane prepolymer and flexible epoxy: a comparative study.
Author: Sarawut Rimdusit
Publication: Polymer Engineering and Science (Refereed)
Date: March 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 3 Page: 288(9)

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Book Description

This book provides an introduction to the use of geometric partial differential equations in image processing and computer vision. It brings a number of new concepts into the field, providing a very fundamental and formal approach to image processing. State-of-the-art practical results in a large number of real problems are achieved with the techniques described. Applications covered include image segmentation, shape analysis, image enhancement, and tracking. The volume provides information for people investigating new solutions to image processing problems as well as for people searching for existent advanced solutions.

Customer Reviews:

Sapiro is smart!.......2003-02-20

Too bad Minnesota is so cold. Maybe we can buy him some gloves
and get another good book out him...

Not really a good book.......2002-03-16

well, I bought this book to learn image analysis using pde and
this book is not what I expected and unfortuanetly I ended up paying lots of money for it. The only use it has had so far is for me to know a topic's name and look for the mathematical definitions and implementation methods online. Most of the times, it is not clear what it's talking about, does not include real clarifying examples, it jumps from one kind of notation to another kind in the middle of explanation and the math at times is not clear and well written. Definitely not what you would expect from a book which invloves many fomulas/theories and proofs.

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Could anyone survive political blacklisting, stalking, harassment, age discrimination and false accusations concerning their honesty as their spouse slowly succumbs to a terminal illness? Follow Hurst's journey as he fights the tyranny emanating from various governmental agencies.

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Madame Justice Bertha Wilson, the first woman appointed to the Supreme Court of Canada, is an enormously influential and controversial figure in Canadian legal and political history. This engaging, authorized, intellectual biography draws on interviews conducted under the auspices of the Osgoode Society for Legal History, held in Scotland and Canada with Madame Justice Wilson, as well as with her friends, relatives, and colleagues. The biography traces Wilson's story from her birth in Scotland in 1923 to the present. Wilson's contributions to the areas of human rights law and equality jurisprudence are many and well-known. Lesser known are her early days in Scotland and her work as a minister's wife or her post-judicial work on gender equality for the Canadian Bar Association and her contributions to the Royal Commission on Aboriginal Peoples.

Through a scrupulous survey of Wilson's judgements, memos, and academic writings (many as yet unpublished), Ellen Anderson shows how Wilson's life and the law were seamlessly integrated in her persistent commitment to a stance of principled contextuality. This stance has had an enduring effect on the evolution of Canadian law and cultural history.

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This digital document is an article from The Advocate, published by Vancouver Bar Association (Canada) on September 1, 2002. The length of the article is 1047 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Judging Bertha Wilson: Law as Large as Life. (book review)
Author: Michael J. O'Keefe
Publication: The Advocate (Magazine/Journal)
Date: September 1, 2002
Publisher: Vancouver Bar Association (Canada)
Volume: 60 Issue: 5 Page: 765(4)

Article Type: Book Review

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Judging Bertha Wilson: Law As Large As Life. (Reviews/Comptes Rendus).(Book Review) (book review): An article from: Labour/Le Travail

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Judging Bertha Wilson: Law As Large As Life. (Reviews/Comptes Rendus).(Book Review) (book review): An article from: Labour/Le Travail
Constance Backhouse
Manufacturer: Canadian Committee on Labour History
ProductGroup: Book
Binding: Digital
ASIN: B0008DH9OE
Release Date: 2005-07-31

Book Description

This digital document is an article from Labour/Le Travail, published by Canadian Committee on Labour History on March 22, 2003. The length of the article is 1555 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Judging Bertha Wilson: Law As Large As Life. (Reviews/Comptes Rendus).(Book Review) (book review)
Author: Constance Backhouse
Publication: Labour/Le Travail (Refereed)
Date: March 22, 2003
Publisher: Canadian Committee on Labour History
Page: 295(3)

Article Type: Book Review

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