Composite fiber of poly D,L-lactic acid/hydroxyapatite produced by melt spinning technology.
In this paper, preparation technologies for the compound fibers of poly D,L-lactic acid (PDLLA)/hydroxyapatite (HA) were investigated. Starting with PDLLA of weight average molecular mass 94,200-1,130,000 and HA powders of diameter 4-10 microm, the compound fibers of PDLLA/HA were obtained through a two stage process: first the adsorption of HA particles on the surface of PDLLA flakes using the liquid-phase adsorption method then melt-extrusion, and second the spinning collection. Experimental result was showed that the high performance composite fibers of PDLLA/HA with diameter of 15-30 micrometer could be produced by the PDLLA of weight average molecular mass 150,000-300,000, the HA powders content 5 wt%, the melt extrusion temperature below 160 degrees C and the screw rotating speed of 10-15 r/min, the spinning collection speed of 2-5 m/min.
Wan
Tao
T
Biomedical Materials and Engineering Research Center, Wuhan University of Technology, Wuhan 430070, PR China. wantao@mail.whut.edu.cn
Li
Shipu
S
Zhou
Wenjuan
W
Yan
Yuhua
Y
Li
Jianhua
J
He
Jianhua
J
D000327:Adsorption; D001709:Biotechnology / Q000379:methods; D020099:Coated Materials, Biocompatible / Q000032:analysis / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D017886:Durapatite / Q000032:analysis / Q000737:chemistry*; D006358:Hot Temperature; D019344:Lactic Acid / Q000032:analysis / Q000737:chemistry*; D008422:Materials Testing; D010316:Particle Size; D011091:Polyesters; D011108:Polymers / Q000032:analysis / Q000737:chemistry*; D012399:Rotation; D013784:Textiles / Q000032:analysis
D020099:Coated Materials, Biocompatible; D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide); D017886:Durapatite