Isothermal Physical Aging of Poly(methyl methacrylate)/Polyhedral Oligomeric Silsequioxanes Nanocomposite Thin Films

被引：1

作者：

Jin, Silro ^{[1
]}

Lee, Jong Keun ^{[1
]}

机构：

[1] Kumoh Natl Inst Technol, Dept Polymer Sci & Engn, Gumi 730701, South Korea

来源：

APPLICATIONS OF ENGINEERING MATERIALS, PTS 1-4 | 2011年 / 287-290卷

关键词：

Isothermal Physical Aging; PMMA; POSS; Thin Film; Nanocomposite; GLASS-TRANSITION TEMPERATURE;

D O I：

10.4028/www.scientific.net/AMR.287-290.2234

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of the polyhedral oligomeric silsequioxanes (POSS) in stacked poly(methyl methacrylate) (PMMA) film samples were investigated in two different film thicknesses, similar to 50 and similar to 660 nm. The types of the POSS include methacryl-, octaisobutyl-, and octasilane-POSS. The glass transition temperature (T-g) and isothermal physical aging was depressed by the reduction of film thickness. Among PUSS molecules used in this work, methacryl-POSS was the greatest effect in both T-g and relaxation enthalpy (Delta H-Relax) due to the physical aging. The Kohlrausch-Williams-Watts (KWW) relaxation function was used to further understand the effect of PUSS and film thickness on the physical aging.

引用

页码：2234 / 2239

页数：6

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