Synthesis and shape memory performance of polyurethane/graphene nanocomposites

被引：74

作者：

Kim, J. T. ^{[1
]}

Kim, B. K. ^{[1
]}

Kim, E. Y. ^{[1
]}

Park, H. C. ^{[2
]}

Jeong, H. M. ^{[3
]}

机构：

[1] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea

[2] Pusan Natl Univ, Sch Mat Sci & Engn, Pusan 609735, South Korea

[3] Univ Ulsan, Dept Chem, Ulsan 680749, South Korea

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2014年 / 74卷

基金：

新加坡国家研究基金会;

关键词：

Polyurethanes nanocomposites; UV cure; Graphene oxide; Shape memory; GRAPHENE OXIDE; POLYMERS; COMPOSITES; SHEETS; NANOSHEETS; PARTICLES;

D O I：

10.1016/j.reactfunctpolym.2013.10.004

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Small amounts of allyl isocyanate modified graphene (iG, 0-2.5 phr) were incorporated into acrylate terminated polyurethane (PU) by UV curing. The effects of this incorporation on the morphological, mechanical, thermal and shape memory properties of the nanocomposites were examined. The iG nanoparticles incorporated into the PU chains acted as both multifunctional crosslinkers and reinforcing fillers, and the effects were most pronounced at 1.5 phr iG. Consequently, the glassy and rubbery state moduli, yield strength, glass transition temperature (T-g), shape fixity and shape recovery ratios were increased by adding up to 1.5 phr iG. Above the loadings, most of the above properties decreased due to aggregation and the auto-inhibition reaction of allyl compounds. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：16 / 21

页数：6

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