Synthesis and properties of poly(benzoxazole imide)s derived from two isomeric diamines containing a benzoxazole moiety

doi:10.1039/c9py01832h

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Synthesis and properties of poly(benzoxazole imide)s derived from two isomeric diamines containing a benzoxazole moiety
	Jiao, Yang ; Chen, Guofei ; Mushtaq, Nafeesa ; Zhou, Haijun ; Chen, Xiaoqi ; Li, Yantao ; Fang, Xingzhong
刊名	POLYMER CHEMISTRY
	2020
卷号	11 期号:11 页码:1937-1946
关键词	HIGH-TEMPERATURE POLYMERS POLY(ETHER IMIDE)S FLUORINATED POLYIMIDES UNSYMMETRICAL DIAMINE BIS(ETHER ANHYDRIDE)S MOLECULAR PACKING BENZIMIDAZOLE FIBERS UNITS
DOI	10.1039/c9py01832h
英文摘要	Two isomeric diamine monomers, 2-(3-aminophenyl)benzo[d]oxazol-5-amine (2a) and 2-(3-aminophenyl)benzo[d]oxazol-6-amine (2b), were designed and synthesized. The corresponding novel series of poly(benzoxazole imide)s (PBOPIs) were prepared with commercial tetracarboxylic dianhydrides via thermal imidization. These series of PBOPIs showed great T(g)s ranging from 285 to 363 degrees C, excellent thermal stability when performed at 5% weight loss temperatures (T(d5%)s) of 510-564 degrees C in N-2 and good mechanical properties (tensile strengths of 103-126 MPa, tensile moduli of 2.9-3.7 GPa and elongations at break of 3.0-6.5%). Furthermore, controlled molecular weight (M-w) polymers PI-3a-PA and PI-3b-PA derived from 4,4 '-oxydiphthalic anhydride (ODPA) with 2a and 2b demonstrated good melt processability with minimum complex viscosities of 2258 and 3444 Pa center dot s at 420 degrees C and low melt viscosity ratios of 1.29 and 1.93 at 400 degrees C, respectively. The PI-b series showed higher T-g & T-d5% and lower transparency compared with the PI-a series due to the isomeric effect.
学科主题	Polymer Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19860]
专题	2020专题
作者单位	1.Fang, XZ (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Addit Mfg Mat Zhejiang Prov, Ningbo 315201, Zhejiang, Peoples R China. 2.Chen, GF
推荐引用方式 GB/T 7714	Jiao, Yang,Chen, Guofei,Mushtaq, Nafeesa,et al. Synthesis and properties of poly(benzoxazole imide)s derived from two isomeric diamines containing a benzoxazole moiety[J]. POLYMER CHEMISTRY,2020,11(11):1937-1946.
APA	Jiao, Yang.,Chen, Guofei.,Mushtaq, Nafeesa.,Zhou, Haijun.,Chen, Xiaoqi.,...&Fang, Xingzhong.(2020).Synthesis and properties of poly(benzoxazole imide)s derived from two isomeric diamines containing a benzoxazole moiety.POLYMER CHEMISTRY,11(11),1937-1946.
MLA	Jiao, Yang,et al."Synthesis and properties of poly(benzoxazole imide)s derived from two isomeric diamines containing a benzoxazole moiety".POLYMER CHEMISTRY 11.11(2020):1937-1946.