巯基点击自增塑型PVC的制备及增塑性能研究  

reparation and Plasticizing Performance Study of Thiol Click Self-plasticized PVC

作　　者：游泽宇 余敏 傅仁利[2] 聂小安[1] 常仟永 陈洁[1] YOU Zeyu;YU Min;FU Renli;NIE Xiaoan;CHANG Qianyong;CHEN Jie(Institute of Chemical Industry of Forest Products,CAF,Key Lab.of Biomass Energy and Material,Jiangsu Province,Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing 210042,China;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏省林业资源高效加工利用协同创新中心,江苏南京210042 [2]南京航空航天大学材料科学与技术学院,江苏南京210016

出　　处：《生物质化学工程》2025年第2期9-14,共6页Biomass Chemical Engineering

基　　金：国家青年自然科学基金资助项目(32101471)。

摘　　要：利用环氧丙醇与腰果酚反应生成具有超支化结构的超支化腰果酚聚甘油,并在其端基上利用酯化反应引入巯基,再利用巯基点击反应引入3种衣康酸酯(衣康酸二甲酯或衣康酸二乙酯或衣康酸二丁酯)合成超支化腰果酚端巯基增塑剂(HCM-X),最后接枝到聚氯乙烯上,制备巯基点击自增塑型PVC(PVC-HCM-X)。通过DMA、TGA等多种测试方法对PVC-HCM-X的塑化效果进行了定性分析。通过TGA分析可知,HCM-X接枝后显著提升了PVC的热稳定性,接枝3种不同的衣康酸酯的PVC-HCM-X的热降解温度由264.5℃(PVC)最高提升至265.1~269.9℃,并且提高了PVC的峰值热降解温度。通过DMA测试与拉伸性能测试,测试了HCM-X接枝对PVC柔韧性的影响。接枝3种不同的衣康酸酯的PVC-HCM-X,玻璃化转变温度从83.10℃(PVC)降至68.34~69.59℃,同时断裂伸长率从33.38%提升至225.24%~272.74%。Hyperbranched cardanol polyglycerol with a hyperbranched structure was synthesized by the reaction of epichlorohydrin and cardanol.Then,thiol groups were introduced to the terminal groups through esterification reaction,and three itaconic acid esters were introduced through thiol-click reaction to synthesize hyperbranched cardanol thiol-terminated plasticizer(HCM-X).Finally,HCM-X was grafted onto PVC to prepare thiol-click self-plasticized PVC.The plasticizing effect of self-plasticized PVC was qualitatively analyzed by DMA,TGA and other tests.Through TGA analysis,it was found that the grafting of HCM-X significantly improved the thermal stability of PVC.The thermal decomposition temperature of PVC increased from 264.5℃to 265.1-269.9℃,and the temperature where PVC began to lose mass also increased.Through DMA and tensile performance tests,the effect of HCM-X grafting on the flexibility of PVC was tested.The glass transition temperatures of the internally plasticized PVC decreased from 83.10℃to 68.34-69.59℃respectively,and the tensile elongation at break increased from 33.38%to 225.24%-272.74%.

关 键 词：自增塑 超支化 腰果酚 巯基 

分 类 号：TQ35[化学工程]