Reactive blending of polyamide with polyethylene: pull-out of in situ-formed graft copolymers and its application for high-temperature materials

Citation
Lh. Pan et al., Reactive blending of polyamide with polyethylene: pull-out of in situ-formed graft copolymers and its application for high-temperature materials, POLYMER, 43(2), 2002, pp. 337-343
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER
ISSN journal
0032-3861 → ACNP
Volume
43
Issue
2
Year of publication
2002
Pages
337 - 343
Database
ISI
SICI code
0032-3861(200201)43:2<337:RBOPWP>2.0.ZU;2-3
Abstract
Reactive blending of polyamide 6 (PA) with polyethylene (PE) having reactiv e sites, maleic anhydride (MAH content= 0.1 wt%),and glycidyl methacrylate (GMA content = 3-12 wt%), was carried out at 70/30 and 65/35 (PA/PE) blend ratios. Blend morphology evolved by reactive blending was analyzed by light scattering and transmission electron microscopy. The blends were then irra diated by electron beam. The degree of crosslinking was estimated by measur ing the dynamic storage modulus at a temperature above melting point of PA. It was found that surface-to-surface interparticle distance tau was signif icantly reduced by the micelle formation via pull-out of in situ-formed gra ft copolymers. The blend with shorter tau was crosslinked by electron-beam irradiation at the lower dose level. A blend having the minimum tau (simila r to0.2 mum) was nicely crosslinked at a low dose level same as for PE, and even for the PA matrix system. (C) 2001 Elsevier Science Ltd. All rights r eserved.