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Thermal Behaviors of N-Octadecylated Poly( Ethyleneimine) with Different Grafting Ratios

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Abstract:

A series of N-octadecylated polyethyleneimine (PEI18C) comblike polymers with different grafting ratios, through N-alkylation method, have been successfully prepared. The chemical structure and thermal behavior of PEI18C comblike polymers with different grafting ratios has been characterized by Fourier transformed infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). Experimental shows that C18 alkyl groups have been successfully grafted onto PEI backbones, and the thermal behavior of PEI18C comblike polymers with different grafting ratios exhibit the linear increment with the grafting ratio of alkyl groups. It can be attributed to the effect of the grafting density of alkyl side groups along PEI backbones. The detailed investigation and discussion is carried out from the viewpoint of side chain crystallization and molecular packing behaviors.

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Periodical:

Advanced Materials Research (Volumes 332-334)

Pages:

2085-2088

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.332-334.2085

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Cite this paper

Online since:

September 2011

Authors:

Yi Ping Yin, Hai Feng Shi, Li Juan Li, Xing Xiang Zhang

Keywords:

Crystallization, N-alkylated Poly( Ethyleneimine), Thermal Behavior

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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