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聚乳酸与二聚水杨酸内酯发生接枝反应生成改性聚乳酸,纳米级氧化锌、改性聚乳酸、少量碳纳米纤维以一定配比,采用接枝共聚—共混法制得纳米级氧化锌/改性聚乳酸复合材料。对复合材料进行表征和测试,结果表明:制得的纳米级氧化锌/改性聚乳酸复合材料分子量分布均匀,性能优良;拉伸强度比未改性聚乳酸明显提高,拉伸强度最高可达到36.64MPa;吸附时间在8h时,吸附率最大达到22%。纳米级氧化锌/改性聚乳酸复合材料在医疗领域具有较好的应用前景。
Polylactic acid and dimerized salicylic acid lactone grafting reaction occurred modified polylactic acid, nano-scale zinc oxide, modified polylactic acid, a small amount of carbon nanofibers to a certain ratio, the use of graft copolymerization - nanocomposites Zinc oxide / modified polylactic acid composite. The composite materials were characterized and tested. The results showed that the prepared nano-scale ZnO / modified PLA composite had uniform molecular weight distribution and excellent properties. The tensile strength was significantly higher than that of unmodified polylactic acid and the tensile strength was the highest 36.64MPa; adsorption time at 8h, the maximum adsorption rate of 22%. Nanometer zinc oxide / modified polylactic acid composite material has a good application prospect in the medical field.