乙酰丙酸环氧甘油单酯缩酮乙酯的合成及其增塑性能  

Synthesis and Plasticity of Epoxy-ethyl Levulinate Monoglyceride Ketal

作　　者：李科[1] 陈洁[1] 聂小安[1] 蒋剑春[1] LI Ke;CHEN Jie;NIE Xiaoan;JIANG Jianchun(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)

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

出　　处：《生物质化学工程》2024年第4期8-14,共7页Biomass Chemical Engineering

基　　金：江苏省生物质能源与材料重点实验室资助项目(JSBEM-S-202002)。

摘　　要：以乙酰丙酸乙酯、甘油、油酸等大宗生物基化学品为原料,通过酯化反应、缩酮反应及环氧化反应初步制备了一种潜在具有增塑性能的新型化合物乙酰丙酸环氧甘油单酯缩酮乙酯(ELMG),并将其与聚氯乙烯(PVC)、环氧大豆油(ESO)、硬脂酸盐压制成膜,通过FT-IR、XRD、DSC、万能试验机等探讨了合成工艺对ELMG结构的影响,以及ELMG的添加对PVC膜的性能的影响。研究结果表明:采用先缩酮反应,再酯化反应,最后环氧化反应可制得ELMG;ELMG对PVC结晶具有一定的破坏,且与ESO复配使用后效果得到显著提升;ELMG复配ESO可明显提高PVC薄膜的塑化性能,其中50%ELMG增塑的ELMG50/PVC薄膜的断裂伸长率为316.5%,达到了ESO/PVC薄膜的98%,拉伸强度为24.63 MPa,达到了ESO/PVC薄膜的89%。ELMG复配ESO使PVC薄膜的迁移性也得到了明显的改善,其中ELMG50/PVC薄膜在大豆油中的质量损失率为0.71%,仅为ESO/PVC薄膜的67%。A new compound of epoxy-ethyl levulinate monoglyceride ketal(ELMG)with potential plasticizing performance was preliminarily prepared by esterification,ketoacetylation and epoxidation through three synthesis processes using ethyl levulinate,glycerol,oleic acid and other bulk biological chemicals as raw materials.Then it was compressed into film with polyvinyl chloride(PVC),epoxy soybean oil(ESO)and stearate.The effect of the synthesis process on the structure of ELMG and the addition of ELMG on the properties of PVC film were investigated by FT-IR,XRD,DSC and universal testing machine.The results showed that the ELMG prepared by first ketal reaction,then esterification reaction and finally epoxidation reaction was more suitable,and the ELMG was successfully synthesized.ELMG had a certain damage to PVC crystallization,and the effect of ELMG combined with ESO was significantly improved.ELMG combined with ESO could significantly improve the plasticizing properties of PVC films.The elongation at break of ELMG50/PVC film plasticized by 50%ELMG was 316.5%,which was 98%of ESO/PVC film,and the tensile strength was 24.63 MPa,which was 89%of ESO/PVC film.The migration of PVC film was also significantly improved by ELMG compounded with ESO.The mass loss rate of ELMG50/PVC film in soybean oil was 0.71%,which was only 67%of that of ESO/PVC film.

关 键 词：乙酰丙酸 脂肪酸 甘油 增塑剂 生物材料 

分 类 号：TQ35[化学工程] TQ414