Order-disorder transition in eicosylated polyethyleneimine comblike polymers

doi:10.1016/j.polymer.2007.03.012

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	Order-disorder transition in eicosylated polyethyleneimine comblike polymers
	Shi, Haifeng ; Zhao, Ying ; Jiang, Shichun ; Xin, John H.; Rottstegge, Joerg ; Xu, Duanfu ; Wang, Dujin
刊名	POLYMER
	2007-04-24
卷号	48 期号:9 页码:2762-2767
关键词	Order-disorder Transition Eicosylated Polyethyleneimine Comblike Polymer
ISSN号	0032-3861
DOI	10.1016/j.polymer.2007.03.012
英文摘要	Order-disorder transition (ODT) behavior in eicosylated polyethyleneimine (PEI20C) comblike polymer obtained by grafting n-eicosyl group on polyethyleneimine backbone was systematically investigated by the combination of differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), Fourier transform infrared (FTIR) spectroscopy as well as solid-state high resolution nuclear magnetic resonance (NMR) spectroscopy. DSC investigations showed two obvious transitions, assigned to the transitions (1) from orthorhombic to hexagonal and (2) from hexagonal to amorphous phase, respectively. These transitions are induced by the variations of alkyl side chain conformation and packing structure with temperature changing, which consequently lead to the destruction of original phase equilibrium. The ODT behavior can also be confirmed by spectroscopic methods like WAXD, FTIR and NMR. The ordered structure and the transition behavior of the alkyl side chains confined by the PEI backbone are obviously different from those of pristine normal alkanes. The transition mechanism of ODT and the origin of the phase transition behavior in PEI20C comblike polymer were discussed in detail in this paper. (c) 2007 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000246329300038
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/62039]
专题	中国科学院化学研究所
通讯作者	Wang, Dujin
作者单位	1.Chinese Acad Sci, Inst Chem, Beijng Natl Lab Mol Sci, CAS Lab Engn Plast,Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China 2.Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Shi, Haifeng,Zhao, Ying,Jiang, Shichun,et al. Order-disorder transition in eicosylated polyethyleneimine comblike polymers[J]. POLYMER,2007,48(9):2762-2767.
APA	Shi, Haifeng.,Zhao, Ying.,Jiang, Shichun.,Xin, John H..,Rottstegge, Joerg.,...&Wang, Dujin.(2007).Order-disorder transition in eicosylated polyethyleneimine comblike polymers.POLYMER,48(9),2762-2767.
MLA	Shi, Haifeng,et al."Order-disorder transition in eicosylated polyethyleneimine comblike polymers".POLYMER 48.9(2007):2762-2767.