Synthesis and phase behavior of a new 2-vinylbiphenyl-based mesogen-jacketed liquid crystalline polymer with a high glass transition temperature and low threshold molecular weight

doi:10.1039/c3py01755a

CORC > 化学研究所 > 中国科学院化学研究所

	Synthesis and phase behavior of a new 2-vinylbiphenyl-based mesogen-jacketed liquid crystalline polymer with a high glass transition temperature and low threshold molecular weight
	Zhang, Qi-Kai 1; Tian, Hai-Jian 1; Li, Chang-Feng 1,2; Zhu, Yu-Feng 1; Liang, Yongri 3; Shen, Zhihao 1; Fan, Xing-He 1
刊名	POLYMER CHEMISTRY
	2014
卷号	5 期号:15 页码:4526-4533
ISSN号	1759-9954
DOI	10.1039/c3py01755a
英文摘要	We have synthesized a new mesogen-jacketed liquid crystalline polymer, poly(4'-(methoxy)-2-vinylbiphenyl-4-methyl ether) (PMVBP) containing a biphenyl core in the side-chain. PMVBP has a smaller monomer molecular weight (MW), a higher glass transition temperature and a lower threshold MW for liquid crystalline (LC) formation. PMVBP was obtained via a nitroxide-mediated living radical polymerization and characterized by gel permeation chromatography, differential scanning calorimetry, polarized light microscopy, and one- and two-dimensional wide-angle X-ray diffraction (WAXD) experiments. The number-average MW (M-n) of the polymers ranges from 0.41 x 10(4) to 1.64 x 10(4) g mol(-1). A relatively high glass transition temperature is observed, which increases from 173 to 208 degrees C with increasing MW. The LC phase developed at relatively high temperatures is strongly dependent on the Mn of the polymer. A hexagonal columnar (Phi(H)) LC phase is observed above 260 degrees C when the Mn is only above 0.53 x 10(4) g mol(-1), a low threshold MW for LC formation. All of the LC phases are retained during cooling.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000339044000015
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/53193]
专题	中国科学院化学研究所
通讯作者	Fan, Xing-He
作者单位	1.Peking Univ, Coll Chem & Mol Engn, Key Lab Polymer Chem & Phys,Minist Educ, Beijing Natl Lab Mol Sci,Dept Polymer Sci & Engn, Beijing 100871, Peoples R China 2.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 3.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat, Beijing Natl Lab Mol Sci,Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qi-Kai,Tian, Hai-Jian,Li, Chang-Feng,et al. Synthesis and phase behavior of a new 2-vinylbiphenyl-based mesogen-jacketed liquid crystalline polymer with a high glass transition temperature and low threshold molecular weight[J]. POLYMER CHEMISTRY,2014,5(15):4526-4533.
APA	Zhang, Qi-Kai.,Tian, Hai-Jian.,Li, Chang-Feng.,Zhu, Yu-Feng.,Liang, Yongri.,...&Fan, Xing-He.(2014).Synthesis and phase behavior of a new 2-vinylbiphenyl-based mesogen-jacketed liquid crystalline polymer with a high glass transition temperature and low threshold molecular weight.POLYMER CHEMISTRY,5(15),4526-4533.
MLA	Zhang, Qi-Kai,et al."Synthesis and phase behavior of a new 2-vinylbiphenyl-based mesogen-jacketed liquid crystalline polymer with a high glass transition temperature and low threshold molecular weight".POLYMER CHEMISTRY 5.15(2014):4526-4533.