STUDY ON BLENDS OF LIQUID-CRYSTALLINE COPOLYESTERS WITH POLYCARBONATE.3. MECHANICAL-PROPERTIES OF COMPATIBILIZED BLENDS

Authors
Citation
Kh. Wei et Jc. Ho, STUDY ON BLENDS OF LIQUID-CRYSTALLINE COPOLYESTERS WITH POLYCARBONATE.3. MECHANICAL-PROPERTIES OF COMPATIBILIZED BLENDS, Journal of applied polymer science, 63(12), 1997, pp. 1527-1533
Citations number
12
Categorie Soggetti
Polymer Sciences
ISSN journal
00218995
Volume
63
Issue
12
Year of publication
1997
Pages
1527 - 1533
Database
ISI
SICI code
0021-8995(1997)63:12<1527:SOBOLC>2.0.ZU;2-G
Abstract
Blends of liquid crystalline poly(oxybenzoate-co-oxynaphthalate) (Vect ra A950) and polycarbonate (PC) were prepared by adding a compatibiliz er to the two polymers in a melt-blending process. The compatibilizer was based on controlled transesterification between synthesized poly(o xybenzoate-co-terephthalate) (40/60) and PC. The compatibilizer exhibi ted birefringence, and its thermal property was analyzed by differenti al scanning calorimetry. The maximum increase in tensile modulus and t ensile strength of these compatibilized Vectra blends were 24% and 54% , respectively, as compared with those of binary Vectra blend without compatibilizer resulting from an injection-molding process. The tensil e properties of the compatibilized Vectra blends decreased once the co ncentration of the compatibilizer exceeded 2 phr. (C) 1997 John Wiley & Sons, Inc.