Acrylated epoxidized soybean oil as a styrene replacement in a dicyclopentadiene‐modified unsaturated polyester resin

Abstract

Nonvolatile and nonhazardous acrylated epoxidized soybean oil (AESO) was investigated as a replacement for hazardous styrene in a commercial unsaturated polyester (UPE) resin [a mixture of styrene and a dicyclopentadiene (DCPD)‐modified UPE (DCPD–UPE)]. DCPD–UPE was prepared from ethylene glycol, diethylene glycol, maleic anhydride, and DCPD. Mixtures of AESO and DCPD–UPE [AESO–(DCPD–UPE) resins] were found to be homogeneous, easily pourable solutions at room temperature. The glass‐fiber‐reinforced composites from the AESO–(DCPD–UPE) resins were comparable or even superior to those from the mixture of styrene and DCPD–UPE in terms of the flexural and tensile strengths. The viscoelastic properties of the cured AESO–(DCPD–UPE) resins and the corresponding glass‐fiber‐reinforced composites were characterized by dynamic mechanical analysis. The viscosities and pot lives of the AESO–(DCPD–UPE) resins as a function of the temperature were studied. The curing mechanism of the AESO–(DCPD–UPE) resins is discussed. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46212.

Hybrid bio-based composites from blends of epoxy and soybean oil resins reinforced with jute woven fabrics

“…Similar results were obtained within the scope of the study conducted by Wu and Li (2018). The data presented showed that the AESO additive ratio exceeding 50 wt% leads to a significant decrease in bending properties for composites as well as other mechanical properties [51]. The flexural strength of the composites including 0-40 wt% AESO content shows 200-540 MPa which is higher than the flexural strength of pure epoxy resin (118 MPa [49]) stated in the literature indicating the positive effect of introducing jute fabric as reinforcement material and the AESO resin up to a limit (40 wt%).…”

“…In a study of Liu et al (2019), the lowest flexural strength was achieved for pure AESO resin with the highest flexural strain, which was resulted from its low crosslinking density and long molecular chains of AESO [34]. Similar results were obtained within the scope of the study conducted by Wu and Li (2018). The data presented showed that the AESO additive ratio exceeding 50 wt% leads to a significant decrease in bending properties for composites as well as other mechanical properties [51].…”

Bio-Based Epoxy Resin from Epoxidized Soybean Oil

“…Consequently, the crosslinking density and interfacial reaction between reinforcement and the matrix can be improved significantly, leading to the enhancement of storage modulus, Tg and water resistance. As a nonvolatile and nonhazardous chemical, AESO is a suitable replacement for styrene in unsaturated polyester (UPE) resin to obtain hybrid polymer networks [90][91][92][93][94]. The UPE with unsaturated sites works as the co-monomer for AESO, and the final products usually exhibit comparable properties to correspondingly styrene-based products.…”

Synthesis and characterization of crosslinked polymers from cottonseed oil

“…In another study, phosphorylated polyols derived from the CSO were used to synthesize waterborne polyurethane dispersions . Li and coworkers have reported the possibility of using commercially available acrylated epoxidized soybean oil (ESO) as a styrene alternative and diluent to facilitate the processing of unsaturated polyester for the production of fiber‐reinforced composites . Several studies have also reported synthesis of biobased resin by using commercially available ESO reacted with maleic anhydride.…”