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copolymers

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730099
EISBN: 978-1-62708-283-9
... Abstract This chapter discusses the structural classifications, molecular configuration, degradation, properties, and uses of polymers. It describes thermoplastic and thermosetting polymers, degree of polymerization, branching, cross-linking, and copolymers. It also discusses glass transition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780003
EISBN: 978-1-62708-281-5
... Acetal  Copolymer 60.7 8.8 2.8 0.41 60 89.6 13 2.6 0.375 69 1.3 R80 1.41  Homopolymer 68.9 10 3.6 0.52 40 97.2 14.1 2.8 0.410 75 1.4 R94 1.42 Polyamides  Nylon 6 80.7 11.7 2.6 0.38 30–100 108 15.7 2.7 0.39 32–53 0.6–1.0 R119 1.12–1.14  Nylon 6/6 94.5...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780028
EISBN: 978-1-62708-281-5
... processible. Similarly, copolymers and other variants of PTFE are melt processible. In both cases, the properties of the melt-processible polymers are less than those of the originals. Polyphenyl oxide is barely processible. However, blends of PPO with PS or HIPS are. Additives such as processing aids...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780146
EISBN: 978-1-62708-281-5
... are called copolymers. Thus, if the repeating units in a homopolymer are A , the polymer could be designated as ( A ) n . However, if A and B repeating units are present in the chain, the macromolecule is a copolymer, which can be designated as ( AB ) n . The chemical susceptibility...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780343
EISBN: 978-1-62708-281-5
... crystallinity, polymer blend/copolymer Small-angle x-ray diffraction X-ray scattering at low angle Crystallite size and shape, long-range periodicity Scanning electron microscopy (SEM) Surface and particle morphology Particle size and shape, surface features Transmission electron microscopy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
..., such as low-density polyethylene and a polypropylene copolymer, to B , b 0 > 17 J Ic /σ y . In order to arrive at a value of J Ic , J -integral values are plotted as a function of crack extension, Δ a , to form a so-called R -curve. This data may be collected using single-specimen or multiple...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550325
EISBN: 978-1-62708-307-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780314
EISBN: 978-1-62708-281-5
.... 1 , which compares the effect of water absorption in vinyl ester/styrene copolymers in distilled water and in saturated sodium chloride (NaCl) solution. This figure also compares the effect of a decreased polarity of the polymer, in this case by varying the amount of styrene coreactant. Fig. 1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780177
EISBN: 978-1-62708-281-5
... thickness. Figure 2 provides curves of percent of transmission plotted against wavelength for typical plastics. Fig. 2 Spectrophotometric transmission of principal optical plastics. Although the methyl methacrylate styrene copolymer curve stops at 800 nm, it is expected to be similar to the other...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780329
EISBN: 978-1-62708-281-5
... transition temperature, T g , of the polymer. For example, in a series of cross-linked acrylic copolymer coatings, the photoinitiation rate and the photooxidation rate decreased as the T g of the acrylic copolymer increased ( Ref 10 ). This effect can be explained as the influence of cage rigidity...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780336
EISBN: 978-1-62708-281-5
... plastics that fall within the logistical limits discussed previously were described by a number of groups during a 1987 symposium on degradable plastics ( Ref 5 ). The ethylene/carbon monoxide copolymer (E/CO) described in Ref 5 provides a good example of the difficulties involved in attempting to make...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230441
EISBN: 978-1-62708-298-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780359
EISBN: 978-1-62708-281-5
... in polymeric analysis, providing information related to composition beyond FTIR. Nuclear magnetic resonance can provide data regarding stereoregularity, carbon content, chemical composition, and copolymer structure ( Ref 10 ). Additionally, surface analysis spectroscopic techniques, such as secondary ion mass...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030338
EISBN: 978-1-62708-282-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780383
EISBN: 978-1-62708-281-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... propagation Polymer Reference Increasing crack propagation rate with increasing mean stress High-density polyethylene 15 Nylon 5 High-molecular-weight PMMA 21 , 25 Polystyrene 30 , 35 Epoxy 24 Polyethylene copolymer 26 Decreasing crack propagation rate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780199
EISBN: 978-1-62708-281-5
... describes the general aspects of creep, stress relaxation, and yielding for homogeneous polymers. The word homogeneous is used to exclude copolymers and blends that undergo microphase separation. However, the differences between crystalline and amorphous polymers are identified. The application...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780153
EISBN: 978-1-62708-281-5
... Polyethylene 300 3000 Polypropylene (non-heat stabilized) 370 3700 Polyvinyl chloride 320 3200 Polyvinyl chloride, copolymer with polyvinyl acetate 327–364 3270–3640 Polyvinyl acetate 280 2800 Polycarbonate 285–305, 330–360 2850–3050 3300–3600 Cellulose-acetate-butyrate 296 2960...