Miscibility and Dynamic Mechanical Behavior of Blends with LCP'S

Issue		J. Phys. IV France Volume 06, Number C8, Décembre 1996 ICIFUAS 11 Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids


Page(s)		C8-575 - C8-577
DOI		http://dx.doi.org/10.1051/jp4:19968124

ICIFUAS 11
Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. IV France 06 (1996) C8-575-C8-577
DOI: 10.1051/jp4:19968124

Miscibility and Dynamic Mechanical Behavior of Blends with LCP'S

G. Gabellini¹ and R.E. Suman Bretas²

¹ Departamento de Engenharia Mecânica PUC/UFRGS, Caixa Postal 1429, CEP 90619-900 Porto Alegre
² Departamento de Engenharia de Materiais UFSCar, Caixa Postal 676, CEP 13565-905 São Carlos SP, Brasil

Abstract
The main advantage of the "in situ" production of blends of thermoplastics with liquid crystalline polymers (LCP's) is viscosity reduction. In this work the phase behavior of blends of poly p-phenylene sulphide (PPS) with two different LCP's is presented. The LCP's are HX1000 (amorphous) and HX4000, crystalline, both from DuPont. The samples were prepared by injection molding and its dynamic mechanical properties were tested after annealing. It was observed that before annealing the blends were slightly miscible at all concentrations. It was also observed a plasticization of the PPS amorphous fraction by the LCP amorphous part. After annealing an increase of the PPS glass transition temperature was observed ; the blends were also find to be immiscible. An average β-transition was observed at aproximately 76°C (HX1000) and at 88°C (HX4000) ; the glass transition temperatures were 160.48°C (HX4000) and 171.77°C (HX1000).

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.