Two bio-based organophosphorus-containing epoxy curing agents (MMDOPO and MAPDGR) with different rigid or flexible characteristics were synthesized from myrcene and castor oil, respectively. Their molecular structures were characterized by Fourier transform infrared spectroscopy (FTIR), 1H and 31P nuclear magnetic resonance (1HNMR). Then they were mixed at different weight ratios to form new curing agents for epoxy resin (E-51). Results show the tensile and flexural strength … Continue reading Novel Phosphorus-containing Flame Retardant Epoxy Curing Agents from Renewable Resources

Water penetration into concrete can cause the degradation of concrete strength, leading into structure failure. Superhydrophobic coatings on concrete received tremendous attention in the recent years as these coatings repel water like lotus leaves. In this work, rice husk ash (RHA) was used to prepare the superhydrophobic coating. Rice husk was calcined at 550 °C and 650 °C to form silica particles with a small amount of … Continue reading Superhydrophobic Coating of Silica with Photoluminescence Properties Synthesized from Rice Husk Ash

Basil seed gum (BSG) edible films containing oregano essential oil (OEO) (1–6%) were fabricated and evaluated for antibacterial activity against E. coli, S. Typhimurium, P. aeruginosa, S. aureus and B. cereus, as well as antioxidant activity, film thickness, moisture content, transparency, swelling index, contact angle and water vapor permeability (WVP). The thickness of BSG based film was recorded as 0.06 mm; the increase in OEO concentration … Continue reading Novel Basil-seed gum Active Edible Films and Coatings Containing Oregano Essential Oil

Renewable polyurethane microcapsules based on a dimer-acid-based polyol were prepared through interfacial polymerization with a homogenizer and sonicator. The dimer-acid-based polyol was used to produce a dimer ester-toluene diisocyanate prepolymer by reacting with toluene 2,4-diisocyanate (TDI). Then, the dimer ester-toluene diisocyanate prepolymer was reacted with 1,4-butanediol (BD) in order to form the shell of the microcapsules, which contained triazole- and oleate-derivative corrosion inhibitors as core … Continue reading Self-anticorrosion Performance Efficiency of Renewable Dimer-acid-based Polyol Microcapsules Containing Corrosion Inhibitors with Two Triazole Groups

A series of novel waterborne UV-curable polyurethane dispersions were synthesized from castor oil, IPDI, DMPA, and HEMA by the acetone process. The prepared UV-PUD was mixed with three different monomers and characterized for the parameters relevant to the study by physical, spectroscopic, and chemical methods. The effect of monomer type on the physicochemical and thermal properties of UV-PUDs revealed that the number of unsaturated groups … Continue reading Green Waterborne UV-Curable Castor Oil-Based Urethane Acrylate Coatings

Three series of novel food contact approved and low-toxic coatings for glass toughening applications were successfully prepared based on dicyandiamide and biobased epoxy compounds, e.g. epoxidized cardanol (NC514), diglycidyl ether of vanillin (DGEVA), triglycidyl ether of phloroglucinol (TGEP). Processability of formulations in bulk and in aqueous phase, and optimum materials were carefully investigated. The cure temperature of these epoxide:amine systems ranged from 160 to 250 °C, … Continue reading Novel Biobased and Food Contact Epoxy Coatings for Glass Toughening Applications

We present for the first time the aqueous emulsion radical polymerization of cardanol derived methacrylic monomer (CAMA) in order to pave the way for the replacement of styrene. This monomer was synthesized in two-step routes by epoxidation of cardanol prior to methacrylation. Polymerization of CAMA was studied both in toluene solution and in aqueous emulsion. Radical aqueous emulsion homo- and co-polymerization of CAMA with methyl … Continue reading Aromatic Biobased Polymer Latex from Cardanol