ICCAS OpenIR
Thermal degradation of star-shaped poly(epsilon-caprolactone)
Xie, Wenyuan1,2; Gan, Zhihua1
2009-07-01
Source PublicationPOLYMER DEGRADATION AND STABILITY
ISSN0141-3910
Volume94Issue:7Pages:1040-1046
AbstractThermal degradation of a serials of star-shaped poly(epsilon-caprolactone) (PCL) with well-defined arm numbers and arm length was investigated. The weight loss of star-shaped PCL during heating process showed a two-stage character, and its dependence on molecular weight and multi-armed structure was well discussed. It was found that the thermal stability could be improved not only by increasing molecular weight but also by increasing arm numbers when the molecular weight is in a certain range. Based on the analyses of pyrolytic products by (1)H NMR and TGA-FTIR, two mechanisms of thermal degradation for the random cleavage of ester bonds of PCL chains were proposed. Ester bonds were pyrolyzed into alkene and carboxyl functional groups in mechanism I while they were pyrolyzed into ketene and hydroxyl functional groups in mechanism II. The effects of multi-armed structure of star-shaped PCL on the cleavage of ester bonds of PCL chains were discussed in terms of the limitation of central "core" on mobility of each PCL arm. Combined the results of viscosity analysis with thermal analysis, it could be concluded that both thermal stability and processability of PCL materials can be improved by controlling the multi-armed structures. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordThermal Degradation Star-shaped Poly(Epsilon-caprolactone) Multi-armed Structure Molecular Weight Pyrolytic Products
DOI10.1016/j.polymdegradstab.2009.04.005
Indexed BySCI
Language英语
WOS IDWOS:000267815700002
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66060
Collection中国科学院化学研究所
Corresponding AuthorGan, Zhihua
Affiliation1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xie, Wenyuan,Gan, Zhihua. Thermal degradation of star-shaped poly(epsilon-caprolactone)[J]. POLYMER DEGRADATION AND STABILITY,2009,94(7):1040-1046.
APA Xie, Wenyuan,&Gan, Zhihua.(2009).Thermal degradation of star-shaped poly(epsilon-caprolactone).POLYMER DEGRADATION AND STABILITY,94(7),1040-1046.
MLA Xie, Wenyuan,et al."Thermal degradation of star-shaped poly(epsilon-caprolactone)".POLYMER DEGRADATION AND STABILITY 94.7(2009):1040-1046.
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
[Xie, Wenyuan]'s Articles
[Gan, Zhihua]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xie, Wenyuan]'s Articles
[Gan, Zhihua]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xie, Wenyuan]'s Articles
[Gan, Zhihua]'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.