Rheology and thermal properties of liquid crystalline copolyester and poly(ethylene 2,6-naphthalate) blends.

From: Polymer Engineering and Science | Date: September 1, 1995| Author: | Copyright information

Blends of a poly(ethylene 2,6-naphthalate) (PEN) and a liquid crystalline copolyester (LCP), poly(benzoate-naphthoate) were prepared in a twin-screw extruder. Specimens for thermal properties were prepared by injection molding. Rheological properties and morphology were investigated by means of an Instron capillary rheometer (ICR) and scanning electron microscopy (SEM). The blend viscosity showed a minimum at 10 wt% of LCP and increased with increasing LCP content above 10 wt% of LCP. Above 50 wt% of LCP and at higher shear rate, phase inversion occurred and the blend morphology was fibrous ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Rheology of Blends of a Thermotropic Liquid Crystalline Polymer With Polyphenylene Sulfide.(Statistical Data Included)
; ...W. GILES [**] Blends of thermotropic liquid crystalline polymer (LOP...INTRODUCTION Blends of thermotropic liquid crystalline polymers (LOPs...lattice theory to blends of a thermotropic liquid crystalline polymer and flexible...
Crystallization morphology of a thermotropic liquid crystalline polyimide.
; ...used to develop polyester-base liquid crystalline polymers, such as Hoechst Calanese...This is because thermotropic liquid crystalline polyesters exhibit an ordered structure in the liquid crystalline state, and their molecular chains...report the synthesis of thermotropic ...
A novel approach to the tailoring of polymers for advanced composites and optical applications, involving the synthesis of liquid crystalline epoxy resins.(5th International Conference on Polymer Characterization)
; ...activities have addressed the field of liquid crystalline epoxy resins (LCER) (1-5). This class...inherent characteristic of thermoplastic liquid crystalline polymers. In fact, the strong anisotropy...properties of uni-directionally oriented liquid crystalline thermoplastic polymers ...
Compatibilization of blends of polyethylene with a semirigid liquid crystalline polymer by PE-g-LCP copolymers.
; ...the properties of polymer blends made up of incompatible...even more necessary for blends of common thermoplastics...available wholly aromatic liquid crystalline polymers (LCPs). The use...morphology and the properties of blends where the LCP minor phase...by some of us (17) for ...
Morphology and mechanical properties of liquid crystalline copolyester and polyester elastomer blends.
; ...properties of thermotropic liquid crystalline polymer (LCP) are well...Thermotropic main-chain liquid crystalline polyesters (LCPs) consist...can be found in the blends as in pure LCPs. In...resultant properties of the blends are also highly dependent...like LCP domains in ...
Transesterifications in a polyblend of poly(butylene terephthalate) and a liquid crystalline polyester.
; INTRODUCTION Thermotropic liquid crystalline polymers (TLCPs), with...the preparation of blends or composites that...transesterification between the liquid crystalline polyester and the matrix...TLCP and PBT in their blends, we have extended our...
Kinetic analysis of thermo-oxidative degradation of PEEK/thermotropic liquid crystalline polymer blends.
; ...employed as a component in blends with other polymers [3-16...The use of a thermotropic liquid crystalline polymer, TLCP, as the second...24] and the viscosity of blends with TLCP are considerably...of atmosphere. In polymer blends, the presence of the second...interfacial adhesion present ...
Kinetics of Isothermal and Non-isothermal Crystallization of Poly(butylene terephthalate)/Liquid Crystalline Polymer Blends.
; ...terephthalate) (PBT)/thermotropic liquid crystalline polymer (LCP), Vectra A950 (VA) blends were studied by using...for PBT/polycarbonate blends [11-13]. However, with...component in PBT/phenoxy blends, the crystallization...increases in PBT/polyarylate blends [4]. In the former ...
Morphology and mechanical properties of liquid crystalline copolyester and poly(ethylene 2,6-naphthalate) blends.
; ...considerable interest in liquid crystalline polymers (LCPs), especially...DuPont (1, 2). Thermotropic liquid crystalline polymers (TLCPs) are attractive...and molded articles. The blends of LCPs with other engineering...researchers have studied blends of thermotropic LCPs ...
Blends of thermotropic liquid crystalline polyesters and poly(butylene terephthalate): thermal, mechanical, and morphological properties.
; INTRODUCTION Thermotropic liquid crystalline polymers (TLCPs) have found...processing and properties of blends containing TLCPs having polymethylene...properties of three new TLCP blends with poly(butylene terephthalate...Tensile properties of the blends in fiber form were studied...