成核剂己二酸二苯甲酰肼对聚乳酸性能的影响

发布时间：2018-04-29 21:49

本文选题：聚乳酸 + 成核剂　；参考：《高分子材料科学与工程》2016年08期

【摘要】：针对聚乳酸左旋度低导致其结晶能力差的缺陷,以己二酸为原料经酰化和氨化反应合成了己二酸二苯甲酰肼,在考察其热稳定性和几何空间结构基础上,采用差示扫描量热仪、X射线衍射仪和熔融指数仪研究其对聚乳酸结晶性能和流动性的影响。结果显示,己二酸二苯甲酰肼具有良好的热稳定性,可显著加速聚乳酸的结晶。当己二酸二苯甲酰肼的质量分数在1.5%到3%时,对聚乳酸具有更好的结晶成核效应,尤其是质量分数3%的己二酸二苯甲酰肼可使聚乳酸的起始结晶温度从101.4℃提高到117.6℃,结晶峰值温度从94.5℃提高到110.7℃。而当己二酸二苯甲酰肼在聚乳酸中的质量分数大于1.5%时,可提高聚乳酸树脂的流动性。
[Abstract]:Two benzoyl adipate was synthesized by acylation and ammoniation of adipic acid by acylation and ammoniation. On the basis of its thermal stability and geometric spatial structure, the crystallization properties and flow of polylactic acid were studied by differential scanning calorimeter, X ray diffractometer and melting index instrument. The results show that two benzoyl adipate has good thermal stability and can significantly accelerate the crystallization of polylactic acid. When the mass fraction of the two benzoylhydrazide of adipate is from 1.5% to 3%, it has a better crystallization effect on the polylactic acid, especially the two benzoyl hydrazide of the diacid, which is 3% of the mass fraction, can make the initial crystallization temperature of polylactic acid. The peak temperature of crystallization increased from 94.5 to 110.7 degrees C from 101.4 to 117.6, and the fluidity of polylactic acid resin could be improved when the mass fraction of two benzoylhydrazide in polylactic acid was more than 1.5%.

【作者单位】：重庆文理学院环境材料与修复技术重庆市重点实验室;重庆文理学院材料与化工学院;
【基金】：国家自然科学基金资助项目(51403027) 重庆市基础科学与前沿技术研究重点专项(cstc2015jcyj BX0123) 重庆市教委科研项目(KJ131202) 重庆文理学院引进人才项目(R2013CH11)
【分类号】：O633.14

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