Effect of Degree of Branching on Glass Transition Temperature for Hyperbranched Polyether

Abstract

Abstract: The effect of the degree of branching(DB) on glass transition temperature(T_g) for a hyperbranced poly[3-ethyl-3-(hydroxymethyl)oxetane](PEHO) was measured by DSC. The results show that the T_g of PEHO decreases with the increasing DB. It is presumed that the smaller the DB of the PEHO sample, the smaller the free volume of the material, and the stronger the intermolecular interaction, which means more energy is needed to make the PEHO chains move, finally it leads to the increase of T_g.

Key words: Poly[3-ethyl-3-(hydroxymethyl)oxetane], Degree of branching, Glass transition temperature

CLC Number:

O631

TrendMD:

MAI Yi-Yong, ZHOU Yong-Feng, YAN De-Yue. Effect of Degree of Branching on Glass Transition Temperature for Hyperbranched Polyether[J]. Chem. J. Chinese Universities, 2004, 25(7): 1373.

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Effect of Degree of Branching on Glass Transition Temperature for Hyperbranched Polyether

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