ICCAS OpenIR
3-phenylethynyl phthalimide end-capped imide oligomers and the cured polymers
Liu, Yanfeng1,2; Wang, Zhen1; Yang, Huili1; Gao, Lianxun1; Li, Gao1; Ding, Mengxian1
2008-06-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN0887-624X
Volume46Issue:12Pages:4227-4235
AbstractIn the past decades, 4-phenylethynyl phthalic anhydride (4-PEPA) has been the most important endcapper used for thermoset polyimide. As the isomer of 4-PEPA, 3-phenylethynyl phthalic anhydride (3-PEPA) has attracted our interest. In this article, 3-PEPA was synthesized and a comparative study with 4-PEPA on curing temperature, curing rate, thermal and mechanical properties of oligomers and cured polymers was presented. The new phenylethynyl endcapped model compound, N-phenyl-3-phenylethynyl phthalimide, was synthesized and characterized. The molecular structure of model compound was determined via single-crystal X-ray diffraction and the thermal curing process was investigated by Fourier transform infrared. Differential scanning calorimetry clearly showed that the model compound from 3-PEPA had about 20 degrees C higher curing onset and peak temperature than the 4-PEPA analog. This result was further proved by the dynamic rheological analysis, that the temperature of minimum viscosity for oligomers end-capped with 3-PEPA was above 20 degrees C higher than that of the corresponding 4-PEPA endcapped oligomers with the same calculated number average molecular weight. The cured polymer from 3-PEPA displayed slightly higher thermal oxidative stability than those from 4-PEPA by thermogravimetric analysis. The thermal curing kinetics of 3-PEPA endcapped oligomer (OI-5) and 4-PEPA endcapped oligomer (OI-6) fitted a first-order rate law quite well and revealed a similar rate acceleration trend. (C) 2008 Wiley Periodicals, Inc.
KeywordActivation Energy Crystal Structures Dibenedetto Equation 3-phenylethynyl Phthalic Anhydride Structure-property Relations Thermoset Polyimide
DOI10.1002/pola.22687
Indexed BySCI
Language英语
WOS IDWOS:000256643500034
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/63424
Collection中国科学院化学研究所
Corresponding AuthorWang, Zhen
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yanfeng,Wang, Zhen,Yang, Huili,et al. 3-phenylethynyl phthalimide end-capped imide oligomers and the cured polymers[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2008,46(12):4227-4235.
APA Liu, Yanfeng,Wang, Zhen,Yang, Huili,Gao, Lianxun,Li, Gao,&Ding, Mengxian.(2008).3-phenylethynyl phthalimide end-capped imide oligomers and the cured polymers.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,46(12),4227-4235.
MLA Liu, Yanfeng,et al."3-phenylethynyl phthalimide end-capped imide oligomers and the cured polymers".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 46.12(2008):4227-4235.
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