Formation and mechanical properties of high-strength poly(3-hydroxybutyrate-co-hydroxyvalerate) fibers
Biodegradable polymer of poly(3-hydroxybutyrate-co-hydroxyvalerate) (PHBV) with high tensile strength was prepared by rapidly drawing of the fibers in water bath immediately after the molten polymer directly quenched into water bath. The innovative method could obtain PHBV fibers with a tensile strength of 2.23cN/dtex through developing the inner structure of PHBV actively, which resulted in high degree of orientation. It is observed by polarizing optical microscopy (POM) that PHBV formed integrated big spherulite, and the spherulite growth rate of PHBV is very slow. With the increase of the storage time, the breaking strength of PHBV fibers would decrease to some extent in the beginning 24h, while the breaking elongation increased with time and kept on the value of 50%-55%. The annealing of PHBV under constant tension could improve the stability of mechanical properties of PHBV fibers. The thermal properties of PHBV power, as spun fibers and drawn fibers were investigated by differential scanning calorimetry(DSC).
LUAN Yixian GU Chunju WU Wenhua ZHU Meifang
College of Material Science and Engineering, Donghua University, Shanghai 201620, P.R.China
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
150-153
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）