Study on formation of poly(-hydroxybutyrate--hydroxyvalerate) (PHBV) fiber

Abstract

In this paper, the crystallization behavior, thermal degradation properties, rheological behavior and the spinnability of poly(?-hydroxybutyrate-co-hydroxyvalerate) (PHBV) fiber were studied. Experimental results indicated that the spherulite growth rate of PHBV was very slow and its size was very large. PHBV began to degrade above 170°C. The flowing curve indicated that the processing temperature and the residential time had important effects on PHBV melts. When the equipment of melting spinning was improved and processing conditions were strictly controlled, the mechanical properties of the PHBV filament can comply with the requirements of the American Pharmacopoeia.

Keywords

poly(β-hydroxybutyrate-co-hydroxyvalerate) fiber / crystallization behaviour / thermal degradation properties / rheological behaviour / spinnability