CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Strain-induced crystallization of polyimide fibers containing 2-(4-aminophenyl)-5-aminobenzimidazole moiety
Yin, CQ; Dong, J; Tan, WJ; Lin, JY; Chen, DJ; Zhang, QH; Zhang, QH (reprint author), Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
2015
Source PublicationPOLYMER
ISSN0032-3861
Volume75Pages:178—186
Subtype期刊文献
AbstractStructural evolution induced by cyclization reaction and heat-drawing of polyimide (PI) fibers containing the 2-(4-aminophenyl)-5-aminobenzimidazole moiety was studied by means of synchrotron radiation wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS). WAXD results indicate that the drawing process induces an increase in the crystallinity and crystal orientation of PI fibers, leading to improvement of the mechanical properties. SAXS results reveal that lamellar structures formed upon heat-drawing. A mechanism for strain-induced phase transitions has been proposed to correlate the structural information with WAXD/SAXS patterns. Dynamic mechanical analysis (DMA) of the obtained fibers shows an obvious a relaxation process above room temperature, which is found to be crystallinity dependent, the intensity of tan d decreases significantly after heat-drawing. The stretched fiber exhibits a negative value of the linear coefficient of thermal expansion (CTE), while the unstretched PI fiber exhibits a positive value. Moreover, heat-drawing increases the thermal stability of the prepared fibers. These improvements may be related to the aggregation structure of the high performance fibers. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordPerformance Copolyimide Fibers Multiwalled Carbon Nanotubes X-ray-diffraction In-situ Mechanical-properties Crystal-structure Molecular Mobility 3 P-phenylenediamine 3' Structural-changes 4 4'-biphenyltetracarboxylic Dianhydride
Language英语
WOS IDWOS:000361879300022
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25047
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorZhang, QH (reprint author), Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.
Recommended Citation
GB/T 7714
Yin, CQ,Dong, J,Tan, WJ,et al. Strain-induced crystallization of polyimide fibers containing 2-(4-aminophenyl)-5-aminobenzimidazole moiety[J]. POLYMER,2015,75:178—186.
APA Yin, CQ.,Dong, J.,Tan, WJ.,Lin, JY.,Chen, DJ.,...&Zhang, QH .(2015).Strain-induced crystallization of polyimide fibers containing 2-(4-aminophenyl)-5-aminobenzimidazole moiety.POLYMER,75,178—186.
MLA Yin, CQ,et al."Strain-induced crystallization of polyimide fibers containing 2-(4-aminophenyl)-5-aminobenzimidazole moiety".POLYMER 75(2015):178—186.
Files in This Item: Download All
File Name/Size DocType Version Access License
Strain-induced cryst(2016KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yin, CQ]'s Articles
[Dong, J]'s Articles
[Tan, WJ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yin, CQ]'s Articles
[Dong, J]'s Articles
[Tan, WJ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yin, CQ]'s Articles
[Dong, J]'s Articles
[Tan, WJ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Strain-induced crystallization of polyimide fibers containing 2-(4-aminophenyl)-5-aminobenzimidazole moiety.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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