Combining Renewable Eleostearic Acid and Eugenol To Fabricate Sustainable Plasticizer and Its Effect of Plasticizing on PVC
Abstract The recent studies on sustainable plasticizer mainly focus on raw material source, synthesis method and plasticization, but the effect of chemical functional groups (epoxy group and ester group) of sustainable plasticizer on compatibility and thermal stability of plasticized polyvinyl chlorid (PVC) materials has been ignored. In this study, we synthesized two kinds of sustainable plasticizer, eleostearic acid eugenol ester(EAEE) and epoxidized EAEE. PVC films plasticized with EAEE were investigated and compared with epoxidized EAEE. PVC plasticized with epoxidized EAEE showed more flexible and thermal stability than EAEE. More hydrogen bonds were formed between PVC chains and epoxidized EAEE than that of PVC chains and EAEE, which caused the that epoxidized EAEE played more efficient plasticizing effect on PVC than EAEE. Epoxidized EAEE containing the flexible alkane chains and polar group (ester groups and epoxy groups) has stronger intermolecular interaction force than EAEE, causing homogeneous and smooth surface of plasticized PVC films.