Recent advances in vegetable oil-based polymers and their composites

A new series of soybean-oil-based elastomers poly(epoxidized soybean oil-co-decamethylene diamine) (PESD) was synthesized by ring-opening polymerization from epoxidized soybean oil (ESO) and decamethylene diamine (DDA) in different molar ratios. The effect of the molar ratio on the structure and properties of PESD was identified by various methods. According to the results of Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (1H NMR) and thermogravimetry (TGA), the glycerol center of ESO was broken by ammonolysis as expected in the process of polymerization, which resulted in un-cross-linked elastomers with low glass transition temperatures (Tg) ranging from −30 to −17 °C. PESD-3 (molar ratio of DDA to ESO is 2:1) was found to have the highest molecular weight and was most suitable for further processing. Then, PESD-3 was successfully cross-linked through succinic anhydride by a general rubber processing method to obtain a cross-linked bioelastomer. The mechanism of chain growth, ...

Synthesis and characterization of novel soybean-oil-based elastomers with favorable processability and tunable properties

Polyesters derived from itaconic acid for the properties and bio-based content enhancement of soybean oil-based thermosets

The influence of rapeseed oil-based polyols on the foaming process of rigid polyurethane foams

Over the past few decades, there has been an increasing demand for bio-based polymers and resins in industrial applications, due to their potential lower cost and environmental impact compared with petroleum-based counterparts. The present research concerns the synthesis of epoxidized palm oil acrylate (EPOLA) from an epoxidized palm oil product (EPOP) as environmentally friendly material. EPOP was acrylated by acrylic acid via a ring opening reaction. The kinetics of the acrylation reaction were monitored throughout the reaction course and the acid value of the reaction mixture reached 10 mg KOH/g after 16 h, indicating the consumption of the acrylic acid. The obtained epoxy acrylate was investigated intensively by means of FTIR and NMR spectroscopy, and the results revealed that the ring opening reaction was completed successfully with an acrylation yield about 82%. The UV free radical polymerization of EPOLA was carried out using two types of photoinitiators. The radiation curing behavior was determined by following the conversion of the acrylate groups. The cross-linking density and the hardness of the cured EPOLA films were measured to evaluate the effect of the photoinitiator on the solid film characteristics, besides, the thermal and mechanical properties were also evaluated.

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Synthesis of Radiation Curable Palm Oil–Based Epoxy Acrylate: NMR and FTIR Spectroscopic Investigations

A series of epoxidized-soybean oil (ESO) with different epoxyl content were synthesized by in situ epoxidation of soybean oil (SBO) The acrylated epoxidized-soybean oil (AESO) was obtained by the reaction of ring opening of ESO using acrylic acid as ring opener The acrylated expoxidized-soybean oil-based thermosets have been synthesized by bulk radical polymerization of these AESOs and styrene The thermal properties of the resins were characterized by differential scanning calorimetry (DSC) and thermo-gravimetric analysis (TG) The results showed that these resins possess high thermal stability There were two glass transition temperature of each resin due to the triglycerides structure of the resins The tensile strength and impact strength of the resins were also recorded, and the tensile strength and impact strength increased as the iodine value of ESO decreased © 2010 Wiley Periodicals, Inc J Appl Polym Sci, 2010

Thermal and mechanical properties of acrylated expoxidized‐soybean oil‐based thermosets

A soypolyol based on epoxidized soybean oil (ESO) was prepared in the presence of HBF4 and diethanolamine (DEA) was used as ring opener. A series of polyurethane rigid foam were prepared by mixing polyol with TDI using an isocyanate index of 1.1. The polyol used in this paper were a mixture of soypolyol and a commercial PL-5601 polyester polyol and the mass fraction of PL-5601 was in the range of 0–60%. The thermal properties of the resins were characterized by DSC and TG. The results showed that these rigid foams possess high thermal stability. There were two glass transition temperature of each foam and Tg1 was increasing with the increasing of OH value. The compression strength of the foam was also recorded, and the effect of mass ratio of soypolyol and PL-5601 polyester polyol on the compression strength was discussed.

Thermal and Mechanical Properties of Polyurethane Rigid Foam Based on Epoxidized Soybean Oil

The conjugated soybean oil was synthesized through the isomerization reaction of soybean oil to transformed the structure of linoleic acid into conjugated linoleic acid structure, and Rhodium complexes (RhCl(Pph3)3) was used as catalyst The efficiency on the conjugation of catalyst RhCl (Pph3)3, tin dichloride dehydrate (SnCl2·2H2O) and triphenylphosphine (Pph3) were evaluated The results showed when RhCl(Pph3)3, SnCl2·2H2O and Pph3 are 925, 90 and 131 mg in 100 g soybean oil respectively, the highest conversion of conjugation achieved 96% The free radical copolymerization of conjugated soybean oil with acrylonitrile (AN) and dicyclopentadiene (DCP) was studied AIBN was used as the initiator FT-IR and 1H-NMR results indicates that the conjugated soybean oil with AN and DCP did occur free radical copolymerization with the initiator AIBN The product is light yellow powder The thermal properties of the soy-based copolymer were investigated by TG and DSC The initial degradation temperature of polymers is higher then 250 °C

Chunlan Dai

Papers

Thermal and mechanical properties of acrylated expoxidized‐soybean oil‐based thermosets

Thermal and Mechanical Properties of Polyurethane Rigid Foam Based on Epoxidized Soybean Oil

Conjugation of Soybean Oil and It’s Free-Radical Copolymerization with Acrylonitrile