MISCIBILITY AND MECHANICAL-PROPERTIES OF POLY(ETHER IMIDE) POLY(ETHER ETHER KETONE) LIQUID-CRYSTALLINE POLYMER TERNARY BLENDS

被引:102
作者
BRETAS, RES [1 ]
BAIRD, DG [1 ]
机构
[1] VIRGINIA POLYTECH INST & STATE UNIV,DEPT CHEM ENGN,BLACKSBURG,VA 24061
关键词
TERNARY BLENDS; LIQUID CRYSTALLINE POLYMERS; MISCIBILITY; CRYSTALLIZATION; MORPHOLOGY;
D O I
10.1016/0032-3861(92)90806-8
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
This paper is concerned with a novel ternary blend composed of poly (ether imide) (PEI), poly (ether ether ketone) (PEEK) and a liquid crystalline polymer (LCP; HX4000, Du Pont). Different compositions were prepared by extrusion and injection moulding. Dynamic mechanical thermal analysis and the observation of the fracture surfaces, before and after annealing, allowed determination of the cold crystallization temperatures and miscibility behaviour of these systems. PEEK/PEI blends are known from previous studies to be miscible at all compositions. In this case it was observed that the PEEK/HX4000 blend was miscible up to 50 wt% HX4000 but partially miscible above this value. The PEI/HX4000 blends were found to be partially miscible in the whole concentration range. As a result, some ternary blend compositions exhibited only one phase, while others exhibited two phases. The measurement of the tensile properties showed that ternary blends with high modulus can be obtained at high LCP loadings, while compositions with high ultimate tensile strength can be obtained with high loadings of PEI or PEEK.
引用
收藏
页码:5233 / 5244
页数:12
相关论文
共 24 条
[1]   THE MORPHOLOGY AND RHEOLOGY OF POLYMER BLENDS CONTAINING A LIQUID-CRYSTALLINE COPOLYESTER [J].
BLIZARD, KG ;
BAIRD, DG .
POLYMER ENGINEERING AND SCIENCE, 1987, 27 (09) :653-662
[2]  
BLIZARD KG, UNPUB POLYMER
[3]   PHASE-BEHAVIOR OF TERNARY POLYMER BLENDS COMPOSED OF 3 MISCIBLE BINARIES [J].
BRANNOCK, GR ;
PAUL, DR .
MACROMOLECULES, 1990, 23 (25) :5240-5250
[4]  
BUCKNALL CB, 1977, TOUGHENED PLASTICS, P57
[5]  
CHOE S, 1989, MULTIPHASE MACROMOLE, P493
[6]   THE PHASE-BEHAVIOR OF TERNARY BLENDS CONTAINING POLYCARBONATE, PHENOXY, AND POLYCAPROLACTONE [J].
CHRISTIANSEN, WH ;
PAUL, DR ;
BARLOW, JW .
JOURNAL OF APPLIED POLYMER SCIENCE, 1987, 34 (02) :537-548
[7]  
DESOUZA JP, UNPUB POLYMER
[8]   MISCIBLE BLENDS OF POLY(ARYL ETHER KETONE)S AND POLYETHERIMIDES [J].
HARRIS, JE ;
ROBESON, LM .
JOURNAL OF APPLIED POLYMER SCIENCE, 1988, 35 (07) :1877-1891
[9]  
HUANG JC, 1988, POLYM ENG SCI, V28, P1085
[10]   THE EFFECT OF DEFORMATION HISTORY ON THE MORPHOLOGY AND PROPERTIES OF BLENDS OF POLYCARBONATE AND A THERMOTROPIC LIQUID-CRYSTALLINE POLYMER [J].
KOHLI, A ;
CHUNG, N ;
WEISS, RA .
POLYMER ENGINEERING AND SCIENCE, 1989, 29 (09) :573-580