TY - JOUR
T1 - Fabrication of novel calcium phosphate/poly(lactic acid) fiber composites
AU - Kothapalli, Chandrasekhar R
AU - Shaw, Montgomery T.
AU - Olson, James R.
AU - Wei, Mei
PY - 2008/1/1
Y1 - 2008/1/1
N2 - Composites using high-modulus polylactic acid (PLA) Fibers coated with calcium phosphate (CaP) were prepared using a cyclic precipitation technique. Scanning electron microscopy revealed that small nuclei of CaP formed after the first soaking cycle, while large quantities of CaP particles were observed after the sixth cycle. The amount of CaP deposited on the PLA yarn increased with deposition time in Ca2+ and PO43- solutions and number of cycles, and decreased with stirring rate during washing cycles. It was observed that around 35 wt % of CaP was deposited on the yarn surface after six cycles of cyclic-soaking. Based on the results, a heterogeneous nucleation and growth mechanism was proposed for the CaP deposition on the surface of hydrolyzed polyester. Composites comprising the coated fibers in a poly(caprolactone) matrix exhibited flexural moduli within the range of that of the cortical bone. © 2007 Wiley Periodicals, Inc.
AB - Composites using high-modulus polylactic acid (PLA) Fibers coated with calcium phosphate (CaP) were prepared using a cyclic precipitation technique. Scanning electron microscopy revealed that small nuclei of CaP formed after the first soaking cycle, while large quantities of CaP particles were observed after the sixth cycle. The amount of CaP deposited on the PLA yarn increased with deposition time in Ca2+ and PO43- solutions and number of cycles, and decreased with stirring rate during washing cycles. It was observed that around 35 wt % of CaP was deposited on the yarn surface after six cycles of cyclic-soaking. Based on the results, a heterogeneous nucleation and growth mechanism was proposed for the CaP deposition on the surface of hydrolyzed polyester. Composites comprising the coated fibers in a poly(caprolactone) matrix exhibited flexural moduli within the range of that of the cortical bone. © 2007 Wiley Periodicals, Inc.
KW - Biodegradable composite
KW - Calcium phosphate
KW - Cyclic precipitation technique
KW - Poly(lactic acid) fibers
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U2 - 10.1002/jbm.b.30848
DO - 10.1002/jbm.b.30848
M3 - Article
C2 - 17455279
SN - 1552-4973
VL - 84
SP - 89
EP - 97
JO - Journal of Biomedical Materials Research - Part B Applied Biomaterials
JF - Journal of Biomedical Materials Research - Part B Applied Biomaterials
IS - 1
ER -