ICCAS OpenIR
Study of the amorphous phase in semicrystalline poly(ethylene terephthalate) via physical aging
Zhao, J; Wang, JJ; Li, CX; Fan, QR
2002-04-09
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume35Issue:8Pages:3097-3103
AbstractAmorphous phase in semicrystalline poly(ethylene terephthalate) (PET) was investigated via its physical aging behavior. It was found that when the degree of crystallinity (f(c)(w)) was within a definite range, there were dual amorphous regions with quite different characters in semicrystalline PET: free amorphous region and constrained amorphous region. Both lower and upper limits of the f(c)(w) range increased with increasing crystallization temperature (T,) for semicrystalline samples crystallized from the glassy state. The dual amorphous regions showed as dual tan 6 loss peaks in dynamic mechanical thermal analysis (DMTA) curves, and when the samples had been physically aged, there were dual endothermic physical aging peaks appearing in the glass transition region of differential scanning calorimetry (DSC) traces. With the proceeding of physical aging, some of the free amorphous region evolved into the constrained amorphous region due to the reduced mobility of chain segments produced by physical aging. The whole amount of the amorphous phase, however, was kept almost constant during the whole process of physical aging. Amorphous phase in semicrystalline samples crystallized from the melt was also discussed.
DOI10.1021/ma011333z
Indexed BySCI
Language英语
WOS IDWOS:000174818600035
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78686
Collection中国科学院化学研究所
Corresponding AuthorFan, QR
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhao, J,Wang, JJ,Li, CX,et al. Study of the amorphous phase in semicrystalline poly(ethylene terephthalate) via physical aging[J]. MACROMOLECULES,2002,35(8):3097-3103.
APA Zhao, J,Wang, JJ,Li, CX,&Fan, QR.(2002).Study of the amorphous phase in semicrystalline poly(ethylene terephthalate) via physical aging.MACROMOLECULES,35(8),3097-3103.
MLA Zhao, J,et al."Study of the amorphous phase in semicrystalline poly(ethylene terephthalate) via physical aging".MACROMOLECULES 35.8(2002):3097-3103.
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