摘要
以甘油单月桂酸酯和癸二酸为原料,以钛酸正丁酯为催化剂,在180℃下合成了高相对分子质量的聚癸二酸甘油单月桂酸酯。采用红外光谱、核磁共振仪和凝胶渗透色谱仪对聚癸二酸甘油单月桂酸酯的结构和相对分子质量进行了表征;并将该聚酯作为增塑剂与聚氯乙烯(PVC)热塑共混成型后,采用热重分析仪、万能拉力试验机对共混物的热性能和力学性能进行了表征。结果表明,通过甘油单月桂酸和癸二酸的直接缩聚反应可以得到高相对分子质量的聚癸二酸甘油单月桂酸酯;该聚酯增塑剂可以在PVC共混物整个热降解过程中提高其热稳定性;该聚酯增塑剂使PVC共混物的断裂伸长率由260.34%提高到319.01%,拉伸强度由24.55 MPa降低为13.08 MPa。
A polyester,poly(sebacic acid-glycery monolaurate)was synthesized from sebacic acid and glycery monolaurate using tetrabutyl titanate as a catalyst.The polyester was characterized by gel permeation chromatography(GPC),nuclear magnetic response spectroscopy(1 HNMR),and Fourier transform infrared spectroscopy(FTIR).The polyester was introduced into poly(vinyl chloride)(PVC) and the mechanical properties of the system was characterized using thermogravimetric analysis(TG)and universal tensile testing machine.It was found that the polyester could improve the thermal stability of PVC in thermal process.However,the tensile strength of the plasticized PVC decreased from 24.55 to 13.08 MPa,and the elongation at break increased from 260.34 %to 319.01 %.
出处
《中国塑料》
CAS
CSCD
北大核心
2014年第12期84-87,共4页
China Plastics
基金
国家林业局948项目(2013-4-12)
关键词
甘油单月桂酸酯
聚酯
聚氯乙烯
增塑剂
glycerol monolaurate
polyester
poly(vinyl chloride)
plasticizer
