Abstract: A unsaturated poly(ester-amide) resin was synthesized via melt polycondensation. Into the poly(ester-amide) calcium polyphosphate fiber (CPPF), a crosslinking agent and an initiator-accelerant agent was introduced, cured at room temperature, the system was transformed to a cross-linked composite. Thus obtained composite could be completely degraded. With increasing CPPF content, strength, especially impact strength was greatly improved, however, when the CPPF content exceeded 60 %, the mechanical strength of the composite showed some decrease. Soaked the composite in a simulated body fluid environment, the pH and Ca2+ concentration could maintain constant values for 7 weeks. After degradation in above body fluid for 3 months, the composites containing 30 % and 50 % CPPF still maintained 143 and 148 MPa, respectively, of bending strength.

Key words: unsaturated poly(ester-amide) resin, calcium phosphate, degradation property, fiber, composite, mechanical property