ICCAS OpenIR
Recovery of amorphous poly(ethylene terephthalate) film uniaxially drawn just below the glass transition temperature
Sun, NJ; Yang, J; Shen, DY; Qian, RY
2000
Source PublicationCHINESE JOURNAL OF POLYMER SCIENCE
ISSN0256-7679
Volume18Issue:1Pages:69-75
AbstractIsothermal recovery in the macroscopic length of homogeneously deformed specimens of amorphous poly(ethylene terephthalate) (PET) film sample uniaxially drawn at 69 degrees C to the draw ratios lambda(0) = 1.26-2.20 were studied at temperatures around the glass transition temperature (T-g = 73 degrees C). Experimental results indicate that the length recovery look place in two distinct steps: a fast first step (fast relaxation) followed by a slow second step (slow relaxation). The relaxation processes were accompanied by the reversion of trans-conformers (1340 cm(-1)) to gauche, and the dichroic function of the 1340 cm(-1) band characterizing the segmental orientation along the chain direction decreased to a very low value at the end of the fast relaxation. This fact led us to assign the fast relaxation as the segmental orientation while the slow relaxation as relaxation of the global chain orientation. It was found that the slow relaxation follows a single exponential function, with relaxation times strongly dependent on the temperature resembling the glass transition process. The fast relaxation does not follow a single exponential decay, presumably a distribution of relaxation times is involved.
KeywordPoly(Ethylene Terephthalate) Uniaxial Drawing Recovery Orientation
Indexed BySCI
Language英语
WOS IDWOS:000085195700011
PublisherSPRINGER-VERLAG SINGAPORE PTE LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76356
Collection中国科学院化学研究所
Corresponding AuthorQian, RY
AffiliationChinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Sun, NJ,Yang, J,Shen, DY,et al. Recovery of amorphous poly(ethylene terephthalate) film uniaxially drawn just below the glass transition temperature[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2000,18(1):69-75.
APA Sun, NJ,Yang, J,Shen, DY,&Qian, RY.(2000).Recovery of amorphous poly(ethylene terephthalate) film uniaxially drawn just below the glass transition temperature.CHINESE JOURNAL OF POLYMER SCIENCE,18(1),69-75.
MLA Sun, NJ,et al."Recovery of amorphous poly(ethylene terephthalate) film uniaxially drawn just below the glass transition temperature".CHINESE JOURNAL OF POLYMER SCIENCE 18.1(2000):69-75.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, NJ]'s Articles
[Yang, J]'s Articles
[Shen, DY]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, NJ]'s Articles
[Yang, J]'s Articles
[Shen, DY]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, NJ]'s Articles
[Yang, J]'s Articles
[Shen, DY]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.