期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 41, 期 23, 页码 3726-3735出版社
WILEY
DOI: 10.1002/pola.10939
关键词
AB(2) monomer; degree of branching; hyperbranched; nanocomposites; poly(ether imide); TEM
We synthesized an AB(2)-type monomer, 4-{4-[di(4-aminophenyl)methyl]-phenoxy}phthalic acid, which contained one phthalic acid group and two aminophenyl. functionalities. The direct self-polycondensation of the AB(2)-type monomer in the presence of triphenylphosphite as an activator afforded a hyperbranched poly(ether imide) with a large number of terminal amino groups. This polymer was characterized with H-1 NMR and IR spectroscopy. The degree of branching of the hyperbranched poly(ether imide) was approximately 56%, as determined by a combination of model compound studies and an analysis of H-1 NMR spectroscopy integration data. The terminal amino groups underwent functionalization readily. The solubility and thermal properties of the resulting polymers depended on the nature of the chain end groups. In addition, the hyperbranched poly(ether imide) was grafted with polyhedral oligomeric silsesquioxane (POSS). Transmission electron microscopy analysis revealed that the grafted POSS molecules aggregated to form a nanocomposite material. (C) 2003 Wiley Periodicals, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据