期刊
POLYMER DEGRADATION AND STABILITY
卷 95, 期 3, 页码 382-388出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2009.11.013
关键词
Nanocomposites; epsilon-PCL; Montmorillonite; Thermal stability; Young's modulus; Exfoliation
Nanocomposites based on biodegradable poly(epsilon-caprolactone) organo-modified clay have been prepared by melt intercalation using a twin-screw extruder The screw configuration developed allowed us to obtain an intercalated/exfoliated nanocomposite structure using a modified montmorillonite containing no polar groups, in contrast to previous work using mainly alkyl ammonium containing hydroxyl polar groups in poly(epsilon-caprolactone) Montmorillonite nanocomposites were prepared using a specific extrusion profile from a 30 wt% masterbatch of organo-modified clay, which was then diluted at 1, 3 and 5%. Intercalated and/or exfoliated nanocomposites structures were assessed using rheological procedures and confirmed by transmission electron microscopy analysis. Mechanical and thermal properties were found to be strongly dependent on morphology and clay percentage Crystallinity was only slightly affected by the clay addition Effect of exfoliation on Young's Modulus and thermal stability was investigated Young's Modulus increased significantly and onset degradation temperature measured by TGA was significantly reduced for an exfoliated nanocomposite composition containing 5 wt% organoclay (C) 2009 Elsevier Ltd All rights reserved
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