ICCAS OpenIR
A study on biodegradable aliphatic poly(tetramethylene succinate): the catalyst dependences of polyester syntheses and their thermal stabilities
Yang, J; Zhang, SP; Liu, XY; Cao, AM
2003-07-01
Source PublicationPOLYMER DEGRADATION AND STABILITY
ISSN0141-3910
Volume81Issue:1Pages:1-7
AbstractIn this study, titanium alkoxide catalyst dependences of condensation polymerization, thermal degradation and stability were examined for a biodegradable aliphatic poly(tetramethylene succinate) (PTMS). A series of aliphatic PTMSs were synthesized through polycondensation of 1,4-butanediol and succinic acid in bulk with various amounts of titanium tetraisopropoxide (TTiPO) as the catalyst, and were further characterized by gel permeation chromatography, differential scanning calorimetry and thermo-gravimetric analysis. To reveal the presence and effect of catalyst residues, the crude product PTMS samples were precipitated in methanol from their chloroform solution, and were further refluxed in an acid solution to selectively hydrolyse the weak metal alkoxide moieties formed. Results of GPC analysis indicated that the original precipitated polyesters exhibited remarkably increasing molecular weights with a decrease in the catalyst/succinic acid feed molar ratio, and strong catalyst dependence of molecular weight and distribution were detected for the product polyesters. As for the acid deactivated samples, it was found that the higher the catalyst concentration used for polyester synthesis, the more remarkable was the decrease in molecular weight observed as compared with the corresponding original precipitated polyesters. Hence, a weak chain linker structure, such as (RO)(n)Ti(OP)(m) with m > I was reasonably suggested to be included in the macromolecular architecture of polyester, where RO and P respectively express the alkoxyl moiety and polyester chain. Thermal analysis showed similar melting points and glass transition temperatures for all polyester samples. In contrast, a strong catalyst dependence of thermal degradation and stability was found for the TTiPO catalysed polyesters, and can be interpreted for the formed weak (RO)(n)Ti(OP)(m) structures. (C) 2003 Elsevier Science Ltd. All rights reserved.
KeywordBiodegradable Aliphatic Ptms Ttipo Catalyst Condensation Polymerisation Thermal Stability
DOI10.1016/S0141-3910(03)00056-9
Indexed BySCI
Language英语
WOS IDWOS:000183134300001
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/80242
Collection中国科学院化学研究所
Corresponding AuthorCao, AM
Affiliation1.Chinese Acad Sci, Shanghai Inst Organ Chem, Polymer Mat Lab, Shanghai 200032, Peoples R China
2.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China
Recommended Citation
GB/T 7714
Yang, J,Zhang, SP,Liu, XY,et al. A study on biodegradable aliphatic poly(tetramethylene succinate): the catalyst dependences of polyester syntheses and their thermal stabilities[J]. POLYMER DEGRADATION AND STABILITY,2003,81(1):1-7.
APA Yang, J,Zhang, SP,Liu, XY,&Cao, AM.(2003).A study on biodegradable aliphatic poly(tetramethylene succinate): the catalyst dependences of polyester syntheses and their thermal stabilities.POLYMER DEGRADATION AND STABILITY,81(1),1-7.
MLA Yang, J,et al."A study on biodegradable aliphatic poly(tetramethylene succinate): the catalyst dependences of polyester syntheses and their thermal stabilities".POLYMER DEGRADATION AND STABILITY 81.1(2003):1-7.
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
[Yang, J]'s Articles
[Zhang, SP]'s Articles
[Liu, XY]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, J]'s Articles
[Zhang, SP]'s Articles
[Liu, XY]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, J]'s Articles
[Zhang, SP]'s Articles
[Liu, XY]'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.