Synthesis and evaluation of epoxidized vegetable oleic acid as a novel environmental benign plasticizer for polyvinyl chloride

Abstract

A bio-based plasticizers, acetyl-oleate triethylene glycol (AOT), was successfully synthesized by using oleic acid as a raw material through esterification, epoxidation, and acetylation. Its structure was analyzed by Fourier transform infrared spectroscopy and 1 H nuclear magnetic resonance. The plasticizing performances of this plasticizer was compared with those of two commercial ones: dioctyl terephthalate (DOTP) and dioctyl adipate (DOA). This was done by blending these plasticizers with PVC, respectively. Thermal gravimetric analysis results showed that the 5% weight loss temperature of PVC with AOT was 53 C higher than that of DOA and 36 C higher than that of DOTP. The tensile results showed that the AOT plasticized PVC had excellent stretchability: its elongation at break with 50 phr AOT reached 697.7%. Furthermore, its transmittance was as high as 90%, showing better compatibility of ATO with PVC.

Synthesis and evaluation of oleic acid‐derived hyperbranched polyester as an efficient plasticizer for PVC

“…Oleic acid esters, a byproduct of these processes, find common use as lubricants and plasticizers. 12 Presently, the majority of oleic acid-derived plasticizers studied involve small molecule polymers characterized by poor migration resistance. 13 In contrast, hyperbranched polymers (HBPs) represent a distinct category of highly branched macromolecules featuring numerous dendritic and terminal units.…”

“…The resulting epoxy group exhibits versatility, participating in various chemical reactions, and allowing for functionalization to expand its application scope. Oleic acid esters, a byproduct of these processes, find common use as lubricants and plasticizers 12 …”