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, two kinds of sustainable plasticizers (eleostearic acid eugenol ester (EAEE) and epoxidized EAEE) were synthesized to plasticize PVC films using eleostearic acid and eugenol. Compared to EAEE, PVC plasticized with epoxidized EAEE showed more flexible and thermal stability. Due to forming more hydrogen bonds between PVC chains and epoxidized EAEE than that of PVC chains, the efficient plasticizing on PVC with epoxidized EAEE was more than EAEE. Because of the flexible alkane chains and polar group (ester groups and epoxy groups) in the structure of epoxidized EAEE, the intermolecular interaction force with PVC was stronger than EAEE, and there was homogeneous and smooth surface of plasticized PVC films.Graphical Abstract
Highlights
Polyvinyl chlorid(PVC) has been widely used in many different fields as early as 1926.[1]
More hydrogen bonds were formed between polyvinyl chlorid (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
The peak at 0.91ppm attributed to protons of -CH3.[36]. After esterification, there is no peak at 3010cm-1 in the FTIR of EAEE, as seen from Figure 3, and new peak corresponding to ester group appeared at 1761ppm, which indicated that EAEE was obtained
Summary
Polyvinyl chlorid(PVC) has been widely used in many different fields as early as 1926.[1] Due to its good physical properties, excellent thermochemical resistance and low cost, it is second only to polyethylene (PE) and polypropylene (PP) in the global plastics market.[2] In order to obtain better performance, such as thermal stability, flexibility, flame retardancy, etc.via adding some specific additives. The performance drops rapidly after aging, and the waist antimigration performance is poor.[30] In most cases, natural unsaturated bonds are usually epoxidized to obtain better heat resistance. At this time their anti-migration performance is improved.[31]. The effect of chemical functional groups(epoxy group and ester groups) of biomass based plasticizer on compatibility and thermal stability of plasticized polyvinyl chlorid(PVC) materials are investigate in detail
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