增塑剂乙酰聚合甘油不饱和脂肪酸多酯的合成及应用  

Synthesis and Application of Acetylated Polyglycerol Unsaturated Fatty Acid Esters

作　　者：胡云[1] 冯国东[1,2] 许彬[1,2] 刘朋[1] 周永红[1,3] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏南京210042 [2]江苏强林生物质能源有限公司,江苏溧阳213364 [3]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《高分子材料科学与工程》2015年第4期31-36,共6页Polymer Materials Science & Engineering

基　　金：国家"十二五"科技支撑计划(2012BAD32B05);中国林科院林业新技术研究所基本科研业务费重点项目(CAFINT2013K01)

摘　　要：以自制二聚甘油和油酸为原料进行酯化反应合成聚甘油不饱和脂肪酸多酯,再与乙酸酐反应得到乙酰聚甘油不饱和脂肪酸多酯。采用单因素试验研究反应温度、反应时间、聚甘油与油酸摩尔比、催化剂用量对酯化率的影响,确定最优合成工艺条件为反应温度215℃、反应时间3 h、油酸与聚甘油摩尔比4∶1、催化剂用量1.5%,该条件下酯化率为87.7%。采用红外光谱、热重分析、凝胶渗透色谱对产物进行了表征。热重分析表明当温度达到500℃时,残留质量为0.21%;凝胶渗透色谱分析结果表明,珚Mn为2354,珚Mw为3050,珚Mz为6549,相对分子质量分布指数为1.2957;拉伸强度为(22.69±3.10)MPa,断裂伸长率为(65.21±5.25)%。The acetylated polyglycerol unsaturated fatty acid esters were prepared using homemade polyglycerol and oleic acid as raw material,which could get the polyglycerol unsaturated fatty acid esters,then reacted with acetic anhydride. The effects of reaction temperature,reaction time,catalyst dosage and mass ratio on the esterification rate were investigated respectively. The optimum process was optimized by single factor experiment research. The highest yield( 87. 7%) of esterification rate is obtained when reaction temperature is 215 ℃,reaction time is 3 h,the mass ratio of oleic acid and polyglycerol is 4∶ 1,the catalyst dosage is 1. 5% of the raw material. The product was characterized by FT-IR,TG,GPC and application testing. The results of TG show that when the temperature reaches 500 ℃,the residual quality is 0. 21%; the distribution of the GPC indexes are 2354( 珚Mn),3050( 珚Mw),6549( 珚Mz),1. 2957( ε) respectively; tensile strength is( 22. 69 ± 3. 10) MPa,the elongation at break is( 65. 21 ± 5. 25) %.

关 键 词：增塑剂 酯化 不饱和脂肪酸 聚甘油 

分 类 号：TQ414[化学工程]