ATOM TRANSFER RADICAL POLYMERIZATION AND THERMAL PROPERTIES OF A STAR-SHAPED POSS/PMMA COMPOSITE

被引：0

作者：

Liu Lei ^{[1
]}

Wang Wenping ^{[1
]}

Jie Xiaoxiao ^{[1
]}

Gao Hengming ^{[1
]}

Fei Ming ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Chem & Engn, Hefei 230009, Peoples R China

来源：

ACTA POLYMERICA SINICA | 2010年 / 01期

关键词：

POSS; ATRP; Composite; Thermal stability; POLYHEDRAL OLIGOMERIC SILSESQUIOXANE; POSS; NANOCOMPOSITES; COPOLYMERS; POLYIMIDE;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A star-shaped poly(methyl methacrylate) with polyhedral oligomeric silsesquioxane (PUSS) as a core was synthesized by atom thansfer radical polymerization (ATRP),using octa(gamma-chloropropyl) POSS as a initiator and CuCl/2,2'-bipyridine as catalyst system. Octa(gamma-chloropropyl) PUSS was prepared in methanol through the hydrolysis and condensation of gamma-chloropropyltriethoxysilane, and a yield of 28% was obtained. The well-defined structures of POSS and POSS/PMMA composite were fully characterized by VIER, NMR, GPC and XRD,with results showing POSS molecule was successfully formed, and the mono-dispersion of PUSS was achieved by ATRP, meaning that there was only one PUSS molecule in a polymer chain. The polydispersity indices (PDI) of POSS/PMMA composite with different polymerization time were 1. 20 and 1. 14, according to the measurement of GPC. The TGA results indicated the thermal stability of POSS/PMMA composite enhanced from 281 degrees C to 303 degrees C with the increase of PUSS content, which was due to the incorporation of POSS molecules.

引用

页码：10 / 14

页数：5

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