Wang, Hong (2025) Utilization Of Crude Glycerol From Biodiesel Production For Ultra-Violet Curable Alkyd Resin Preparation Via Solvent-Free Enzymatic Process. PhD thesis, Perpustakaan Hamzah Sendut.
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Abstract
The development of environmentally friendly coatings has become a pressing necessity to address environmental concerns and regulatory restrictions on volatile organic compounds. This study explores a novel solvent-free enzymatic approach for synthesizing ultra-violet (uv) curable alkyd resin using biodiesel-derived crude glycerol, soybean oil, glycidyl methacrylate, itaconic anhydride, phthalic anhydride, and succinic anhydride. The synthesis process was optimized to maximize the yield of monoglycerides and enhance resin performance. First, the feasibility of using crude glycerol was confirmed through methanol and metal content analysis. Monoglycerides were then synthesized via solvent-free enzymatic glycerolysis, achieving a monoglyceride yield of 28.93% after reaction conditions were optimized using response surface methodology (rsm). Subsequently, a solvent-free system was employed for pre-reaction, enzymatic reaction, and uv curing, leading to the synthesis of uv curable alkyd resin films, resulting in a number-average molecular weight (mn) of the resin of 1144 g/mol and a film gel content of 91.1% under preferred conditions. The properties of the uv-cured films were then evaluated. Increasing the molar ratio of succinic anhydride to phthalic anhydride improved the flexibility, adhesion, and impact resistance of the films but reduced hardness and contact angle, while solvent resistance remained stable.
| Item Type: | Thesis (PhD) |
|---|---|
| Subjects: | T Technology > T Technology (General) > T1-995 Technology(General) |
| Divisions: | Pusat Pengajian Teknologi Industri (School of Industrial Technology) > Thesis |
| Depositing User: | Mr Hasmizar Mansor |
| Date Deposited: | 18 May 2026 01:35 |
| Last Modified: | 18 May 2026 01:35 |
| URI: | http://eprints.usm.my/id/eprint/64220 |
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