A New Elaboration Concept of Polypropylene/Unmodified Montmorillonite Nanocomposites by Reactive Extrusion Based on Direct Injection of Polypropylene Aqueous Suspensions

被引：14

作者：

Aloui, M. ^{[1
]}

Soulestin, J. ^{[1
]}

Lacrampe, M. -F. ^{[1
]}

Krawczak, P. ^{[1
]}

Rousseaux, D. ^{[2
,3
]}

Marchand-Brynaert, J. ^{[2
]}

Devaux, J. ^{[3
]}

Quievy, N. ^{[3
]}

Sclavons, M. ^{[3
]}

机构：

[1] Ecole Mines, Polymers & Composites Technol & Mech Engn Dept, F-59508 Douai, France

[2] Catholic Univ Louvain, Unite Chim Organ & Med, B-1348 Louvain, Belgium

[3] Catholic Univ Louvain, Unite Chim & Phys Hauts Polymeres, B-1348 Louvain, Belgium

来源：

POLYMER ENGINEERING AND SCIENCE | 2009年 / 49卷 / 11期

关键词：

LAYERED-SILICATE NANOCOMPOSITES; MECHANICAL-PROPERTIES; PROCESSING CONDITIONS; PP/CLAY NANOCOMPOSITES; MORPHOLOGY; NANOCLAY; POLYMER;

D O I：

10.1002/pen.21474

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Nanocomposites based on polypropylene (PP) and unmodified Montmorillonite were prepared using a novel elaboration route based on a water-assisted extrusion process. Unmodified Montmorillonite, high shear compounding together with injection of aqueous suspension and reactive processing technology were used. Different aqueous suspensions containing cationic or anionic surfactants, and a compatibilizer (PP-g-MA) were injected during extrusion to promote clay dispersion. For a comparison purpose, a commercial PP/clay masterbatch was melt mixed to PP. Structural, morphological, and rheological characterizations indicate clearly that the cationic suspensions ease the dispersion of clay platelets in the PP matrix. No full exfoliation is, however, obtained, and the system remains still less homogeneous than the nanocomposite based on the commercial masterbatch. Nevertheless, mechanical and thermal characterizations of the nanocomposites based on cationic surfactants demonstrate the efficiency to disperse clay in the polymer matrix, and the effect on the ductility compared to usual PP nanocomposites is promising. POLYM. ENG. SCI., 49:2276-2285, 2009. (C) 2009 Society of Plastics Engineers

引用

页码：2276 / 2285

页数：10