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Fibrillation of liquid crystalline polymer in polysulfone promoted by increased system elasticity via adding nano-silica

被引：27
作者：
Chen, Jun
Chen, Peng
Wu, Lichuan
Zhang, Jun
He, Jiasong [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, Key Lab Engn Plast,BNLMS, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
POLYMER | 2007年 / 48卷 / 14期
关键词：
polysulfone; liquid crystalline polymers (LCP); nano-SiO2;
D O I：
10.1016/j.polymer.2007.05.004
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];
摘要：
Ternary blends composed of a liquid crystalline polymer (LCP), nano-SiO2 and polysulfone (PSF) were prepared by melt blending. Very long and perfectly oriented LCP fibrils were in situ formed in capillary flows by adding 5 vol% of nano-SiO2 to binary PSF/LCP blend. Dynamic rheology analysis indicated that the sharp increase of elasticity was caused by higher content of nano-SiO2. Then the entrance angle was decreased and elongational stress increased when the polymer melt flowed through the abrupt contraction, which resulted in the fibrillation of LCP in PSF/LCP/nano-SiO2 system. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4242 / 4251
页数：10
相关论文
共 77 条
[1]
Compatibilization of poly(ether imide)/Rodrun blends by means of a polyarylate [J].
Bastida, S ;
Eguiazábal, JI ;
Nazábal, J .
POLYMER, 2001, 42 (03) :1157-1165
[2]
BEERY D, 1991, POLYM ENG SCI, V31, P451, DOI 10.1002/pen.760310612
[3]
AN APPROXIMATE ANALYSIS FOR CONTRACTION AND CONVERGING FLOWS [J].
BINDING, DM .
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1988, 27 (02) :173-189
[4]
BOGER DV, 1987, ANNU REV FLUID MECH, V19, P157, DOI 10.1146/annurev.fluid.19.1.157
[5]
Payne effect and shear elasticity of silica-filled polymers in concentrated solutions and in molten state [J].
Cassagnau, P .
POLYMER, 2003, 44 (08) :2455-2462
[6]
Effect of aspect ratio of whisker on the fibrillation of liquid crystalline polymer in polysulfone matrix [J].
Chen, J. ;
Chen, P. ;
Wu, L. ;
Zhang, J. ;
He, J. .
INTERNATIONAL POLYMER PROCESSING, 2007, 22 (02) :166-172
[7]
Enhanced fibrillation of LCP by CaCO3 whisker in polysulfone matrix through increasing elongational stress [J].
Chen, Jun ;
Chen, Peng ;
Wu, Lichuan ;
Zhang, Jun ;
He, Jiasong .
POLYMER, 2006, 47 (15) :5402-5410
[8]
Effect of glass bead packing on the fibrillation of liquid-crystalline polymer in polycarbonate [J].
Chen, P ;
Chen, J ;
Zhang, BQ ;
Zhang, J ;
He, JS .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2006, 44 (06) :1020-1030
[9]
Morphology evolution of a liquid crystalline polymer confined by highly packed glass beads in polycarbonate [J].
Chen, P ;
Zhang, J ;
He, JS .
POLYMER, 2005, 46 (18) :7652-7657
[10]
Morphology evolution of a liquid crystalline polymer in polycarbonate matrix enhanced by the addition of glass beads [J].
Chen, Peng ;
Wu, Lichuan ;
Ding, Yanfen ;
Zhang, Jun ;
He, Jiasong .
COMPOSITES SCIENCE AND TECHNOLOGY, 2006, 66 (11-12) :1564-1574
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