Phase transition and conformational variation of N-alkylated branched poly(ethyleneimine) comblike polymer

	Phase transition and conformational variation of N-alkylated branched poly(ethyleneimine) comblike polymer
	Shi HF ; Zhao Y ; Zhang XQ ; Jiang SC ; Wang DJ ; Han CC ; Xu DF
刊名	macromolecules
	2004
卷号	37 期号:26 页码:9933-9940
关键词	FLEXIBLE SIDE-CHAINS RIGID-ROD POLYMERS BIOSYNTHETIC POLY(GAMMA-GLUTAMIC ACID) SODIUM DODECYL-SULFATE X-RAY-SCATTERING SUPRAMOLECULAR COMPLEXES CRYSTALLINE TRANSFORMATION THERMOTROPIC POLYPEPTIDES NORMAL-TRITRIACONTANE THERMAL TRANSITIONS
ISSN号	0024-9297
通讯作者	wang dj
中文摘要	a series of branched poly(ethyleneimine) (pei) derived polymers with different lengths of n-alkyl side chains, denoted as pei(n)cs (n = 12, 14, 16, 18, 20, number of carbon atoms in alkyl side group), have been prepared by a n-alkylation method, and systematically characterized by differential scanning calorimertry (dsc) and wide-angle x-ray diffraction (ward) as well as fourier transform infrared spectroscopy (ftir). the side chains grafted on these comblike polymers are long enough to form crystalline phase composed of paraffin-like crystallites. the crystallization of the side chains forces the branched poly(ethyleneimine) molecules to pack into layered structure, between which the crystallites are located. the melting temperatures of the side chain crystallites increase from -12.36 to +51.49 degreesc with increasing the length of the side chains from n. = 12 to n = 20, which are a little bit lower than the corresponding pristine n-alkanes. pei18c was taken as an example in this work for the investigation of phase transition and conformational variation of the side chains with temperature changing.
收录类别	SCI
语种	英语
WOS记录号	WOS:000225932900041
公开日期	2010-08-17
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/15111]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Shi HF,Zhao Y,Zhang XQ,et al. Phase transition and conformational variation of N-alkylated branched poly(ethyleneimine) comblike polymer[J]. macromolecules,2004,37(26):9933-9940.
APA	Shi HF.,Zhao Y.,Zhang XQ.,Jiang SC.,Wang DJ.,...&Xu DF.(2004).Phase transition and conformational variation of N-alkylated branched poly(ethyleneimine) comblike polymer.macromolecules,37(26),9933-9940.
MLA	Shi HF,et al."Phase transition and conformational variation of N-alkylated branched poly(ethyleneimine) comblike polymer".macromolecules 37.26(2004):9933-9940.