BLENDS OF A THERMOTROPIC LIQUID-CRYSTALLINE POLYMER AND A THERMOPLASTIC ELASTOMER .1. MECHANICAL-PROPERTIES AND MORPHOLOGY

被引：48

作者：

VERHOOGT, H ^{[1
]}

LANGELAAN, HC ^{[1
]}

VANDAM, J ^{[1
]}

DEBOER, AP ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL, FAC CHEM TECHNOL & MAT SCI, DEPT POLYMER TECHNOL, 2600 GA DELFT, NETHERLANDS

来源：

POLYMER ENGINEERING AND SCIENCE | 1993年 / 33卷 / 12期

关键词：

D O I：

10.1002/pen.760331206

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Blends of a thermotropic liquid crystalline polymer (LCP), Vectra A900, and a thermoplastic elastomer, Kraton G1650, were made on a single screw extruder. During extrusion, fibers of the LCP are formed under influence of shearing and elongating forces. The stiffness and tensile strength of the elastomer are greatly improved by the addition of the LCP. The modulus of elasticity of blends containing up to 20% LCP can be described well with the Halpin-Tsai equation. Differential scanning calorimetry and dynamic mechanical thermal analysis (DMTA) measurements show that the polymers are immiscible, but the DMTA results show a shift of the glass transition temperature of the elastomeric block of the Kraton polymer. This shift may be attributed to a layer of elastomer adsorbed on the LCP particles.

引用

页码：754 / 763

页数：10

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