ICCAS OpenIR
Coil extension stage in the cold drawing of glassy polymers
Yang, XZ; Sun, J
2002-12-01
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume40Issue:23Pages:2646-2652
AbstractCold drawing is known as a thermodynamically reversible process for glassy polymers. In the extension process, there might be a stage in which the global structure of chain coils extends in the drawing direction. This extension stage has not been clearly identified because of the lack of a quantitative relationship between the global structure evolution and the local structure reorientation. We have developed a theoretical method to elucidate the relationship, which is based on a simulated chain conformational distribution and a relationship between the chain conformations and the extension. Any local structure, such as the fraction of trans conformations of ethylene glycol of poly(ethylene terephthalate) (PET), can then be calculated with an ensemble average as a function of the system extension. Combined with infrared conformational. band measurements, the coil extension stage has been characterized in the cold drawing of amorphous PET. This stage does not start from the yielding point but instead begins nearly at the end of the stress softening. In the recovery process, the experimental measurements and theoretical predictions are well correlated. (C) 2002 Wiley Periodicals, Inc.
KeywordConformations Poly(Ethylene Terephthalate) Yield Recovery Process Cold Drawing Forced Elasticity Infrared Band
DOI10.1002/polb.10325
Indexed BySCI
Language英语
WOS IDWOS:000179149300005
PublisherJOHN WILEY & SONS INC
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78910
Collection中国科学院化学研究所
Corresponding AuthorYang, XZ
AffiliationChinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Yang, XZ,Sun, J. Coil extension stage in the cold drawing of glassy polymers[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2002,40(23):2646-2652.
APA Yang, XZ,&Sun, J.(2002).Coil extension stage in the cold drawing of glassy polymers.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,40(23),2646-2652.
MLA Yang, XZ,et al."Coil extension stage in the cold drawing of glassy polymers".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 40.23(2002):2646-2652.
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