Oxidation-migration cycle in polypropylene-based nanocomposites

被引：21
作者：
Lewin, Menachem [1 ]
Tang, Yong [1 ]
机构：
[1] Polytech Univ, Polymer Res Inst, Dept Chem & Biol Sci, Brooklyn, NY 11201 USA
来源：
MACROMOLECULES | 2008年 / 41卷 / 01期
关键词：
D O I：
10.1021/ma702094e
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Effect of oxidation on the structure of polypropylene- (PP) based nanocomposites, and the additional results on the effect of oxygen during annealing of maleic anhydride (MA) grafted PP were investigated. Effects of two structure modifier were studied simultaneously, one of the grafted MA and the other of the oxygen. The effects of increasing concentration of air up to 100% of the purging gas were studied on pristine PP without any other compatibilizers. Preparation of the samples, annealing experiments, regulation of the composition of the purging gas, extent of migration and concentration of carbonyl group, and X-ray diffraction (XRD) measurements were carried out. Experimental investigation suggested a mechanism by which oxidative annealing of polymer organically layered silicate nanocomposites bring about the migration of exfoliated platelets to the surface.
引用
收藏
页码：13 / 17
页数：5
相关论文
共 26 条
[1]   ROLE OF OXYGEN DIFFUSION IN POLYMER AGING - KINETIC AND MECHANICAL ASPECTS [J].
AUDOUIN, L ;
LANGLOIS, V ;
VERDU, J ;
DEBRUIJN, JCM .
JOURNAL OF MATERIALS SCIENCE, 1994, 29 (03) :569-583
[2]   Influence of nanodispersed boehmite on polypropylene photooxidation [J].
Bocchini, Sergio ;
Morlat-Therias, Sandrine ;
Gardette, Jean-Luc ;
Camino, Giovanni .
POLYMER DEGRADATION AND STABILITY, 2007, 92 (10) :1847-1856
[3]  
CARLSSON DJ, 1976, J MACROMOL SCI R M C, VC 14, P65
[4]  
George G, 2000, HDB POLYM DEGRADATIO, P277
[5]   Flammability and thermal stability studies of polymer layered-silicate (clay) nanocomposites [J].
Gilman, JW .
APPLIED CLAY SCIENCE, 1999, 15 (1-2) :31-49
[6]   C-13 NMR study of the grafting of maleic anhydride onto polyethene, polypropene, and ethene-propene copolymers [J].
Heinen, W ;
Rosenmoller, CH ;
Wenzel, CB ;
deGroot, HJM ;
Lugtenburg, J ;
vanDuin, M .
MACROMOLECULES, 1996, 29 (04) :1151-1157
[7]  
HUANG N, UNPUB
[8]   Surface free energies of polymeric materials, additives and minerals [J].
Lewin, M ;
Mey-Marom, A ;
Frank, R .
POLYMERS FOR ADVANCED TECHNOLOGIES, 2005, 16 (06) :429-441
[9]   Some comments on the modes of action of nanocomposites in the flame retardancy of polymers [J].
Lewin, M .
FIRE AND MATERIALS, 2003, 27 (01) :1-7
[10]   Reflections on migration of clay and structural changes in nanocomposites [J].
Lewin, Menachem .
POLYMERS FOR ADVANCED TECHNOLOGIES, 2006, 17 (9-10) :758-763
123