Effect of compatibilizers on mechanical properties and morphology of in-situ composite film of thermotropic liquid crystalline polymer/polypropylene

被引:19
作者
Bualek-Limcharoen, S [1 ]
Samran, J
Amornsakchai, T
Meesiri, W
机构
[1] Mahidol Univ, Fac Sci, Dept Chem, Bangkok 10400, Thailand
[2] Royal Thai AF, Directorate Armament, Bangkok 10210, Thailand
关键词
D O I
10.1002/pen.11417
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
An in-situ composite film of a thermotropic liquid crystalline polymer (LC3000)/polypropylene (TLCP/PP) was produced using the extrusion cast him technique. The compatibilizing effect of thermoplastic elastomers, styrene-ethylene butylene-styrene (SEBS), maleic anhydride grafted SEES (MA-SEBS), and maleic anhydride grafted polypropylene (MA-PP) on the mechanical properties and morphology of the TLCP/PP composite films was investigated. It was found that SEES provided a higher value of tensile modulus than MA-SEES, which in turn was higher than MA-PP, despite the expected stronger interaction between the MA chain and TLCP. The observation of the morphology under optical and scanning electron microscopes suggested that all three compatibilizers helped improve the dispersion of the TLCP fibers and increased the fiber aspect ratio to a different extent. The fractured surface of the specimens showed more fiber breakage than pull-out when a compatibilizer was added, which suggested the improvement of interfacial adhesion. The surface roughness of fibers with an added elastomeric compatibilizer may also provide mechanical interlocking at the interface. It is suggested that the increase in the viscosity ratio of TLCP/PP due to the added elastomeric compatibilizer, SEES and MA-SEBS, compared with the thermoplastic compatibilizer, MA-PP, is more effective in improving the composite mechanical properties.
引用
收藏
页码:312 / 320
页数:9
相关论文
共 28 条
[1]  
ACIERNO D, 1996, RHEOLOGY PROCESSING
[2]   THE TECHNOLOGICAL COMPATIBILIZATION OF NATURAL RUBBER/POLYSTYRENE BLENDS BY THE ADDITION OF NATURAL RUBBER-GRAFT-POLYSTYRENE [J].
ASALETHA, R ;
THOMAS, S ;
KUMARAN, MG .
RUBBER CHEMISTRY AND TECHNOLOGY, 1995, 68 (04) :671-687
[3]  
BROWN CS, 1993, POLYM BLENDS ALLOYS
[4]  
Bucknall CB., 1977, TOUGHNED PLASTICS, DOI [DOI 10.1002/POL.1978.130160714, 10.1007/978-94-017-5349-4, DOI 10.1007/978-94-017-5349-4]
[5]   Liquid crystalline polymer (LCP) reinforced polyethylene blend blown film: Effects of counter-rotating die on fiber orientation and film properties [J].
Chinsirikul, W ;
Hsu, TC ;
Harrison, IR .
POLYMER ENGINEERING AND SCIENCE, 1996, 36 (22) :2708-2717
[6]   RUBBER-THERMOPLASTIC COMPOSITIONS .8. NITRILE RUBBER POLYOLEFIN BLENDS WITH TECHNOLOGICAL COMPATIBILIZATION [J].
CORAN, AY ;
PATEL, R .
RUBBER CHEMISTRY AND TECHNOLOGY, 1983, 56 (05) :1045-1060
[7]   SHEET EXTRUSION OF IN-SITU COMPOSITES - INFLUENCE OF PROCESSING PARAMETERS [J].
CREVECOEUR, G ;
GROENINCKX, G .
POLYMER ENGINEERING AND SCIENCE, 1993, 33 (15) :937-943
[8]   COMPATIBILIZATION OF THERMOPLASTIC COMPOSITES BASED ON BLENDS OF POLYPROPYLENE WITH 2 LIQUID-CRYSTALLINE POLYMERS [J].
DATTA, A ;
BAIRD, DG .
POLYMER, 1995, 36 (03) :505-514
[9]  
DEBENEDETTO AT, 1989, POLYM ENG SCI, V29, P153
[10]   POLYMER BLENDS CONTAINING LIQUID-CRYSTALS - A REVIEW [J].
DUTTA, D ;
FRUITWALA, H ;
KOHLI, A ;
WEISS, RA .
POLYMER ENGINEERING AND SCIENCE, 1990, 30 (17) :1005-1018