L-丙交酯-乙交酯-ε-己内酯共聚物模压工艺的正交设计

Orthogonal Experiment of Poly(L-Lactide-co-Glycolide-co-ε-Caprolactone) Compression Moulding

以L-丙交酯、乙交酯和ε-己内酯为原料开环聚合合成三元共聚物PLLGC。通过正交试验设计研究了预热温度、模压压力、模压温度、模压时间等因素对PLLGC模压材料性能的影响,确定了PLLGC材料最佳的模压工艺。研究了不同因素对PLLGC模压材料的拉伸强度、密度、模压后分子量及分子量分布的影响,通过极差分析结果表明,PLLGC三元共聚物的最佳模压工艺条件:预热温度为150℃,模压压力为8 MPa,模压温度为100℃,模压时间为10 min。

Poly （ L-lactide-co-glycolide-co-ε-caprolactone ） （ PLLGC ） was synthesized by ring-opening polymerization using L-lactide, glycolide and -caprolactone. The influences of compression moulding parameters such as preheating temperature, moulding pressure, mould temperature and moulding time on the properties of PGC were researched by orthogonal experiment to determine the optimal processing parameters processing parameters on the tensile strength, density, after compression moulding were researched by rang moulding parameters of PLLGC are as follows： prehea temperature of 100 ℃, and molding time of 10 rain. molecular e analysis. weight and molecular weight The results show that the The influences of the distribution of P1AC optimum compression ring temperature of 150 ℃ , moulding pressure of 8 MPa, mold