Nanocomposite structure based on silylated MCM-48 and poly(vinyl acetate)

被引：48

作者：

He, J ^{[1
]}

Shen, YB ^{[1
]}

Yang, J ^{[1
]}

Evans, DG ^{[1
]}

Duan, X ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Educ Minist, Key Lab Sci & Technol Controllable Chem React, Beijing 100029, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 20期

关键词：

D O I：

10.1021/cm020938m

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

As-synthesized MCM-48 was modified via silylation with Cl-Si(CH3)(3). The resulting silylated MCM-48 possesses a well-ordered long-range structure, a narrow distribution of nanosized pore diameters, a high mesoporous volume, a large specific surface area, and, most significantly, a hydrophobic surface. A nanocomposite structure based on silylated MCM-48 and poly(vinyl acetate) (PVAc) has been prepared through both in situ polymerization and incorporation of preformed polymer. Characterization by FT-IR, XRD, and N-2 adsorption-desorption techniques indicates the latter method is more effective than the in situ polymerization method. The composites obtained by addition of the PVAC/silylated MCM-48 particles to a PVAc matrix have significantly enhanced mechanical performance, including toughness and elasticity, when compared with PVAc itself or with composites derived from PVAc and pure silylated MCM-48 or precipitated silica.

引用

页码：3894 / 3902

页数：9

共 35 条

[1] Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials [J].