期刊
COATINGS
卷 11, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/coatings11020127
关键词
starch; biodegradable coatings; UV-curing
UV-curable starch-based coatings were prepared using methacrylated starch, with enhanced mechanical and surface properties through cross-linking. Various tests were conducted to investigate the coating's properties and biodegradability potential.
Promising UV-curable starch-based coatings were fabricated by utilizing methacrylated starch. The aqueous methacrylated starch solution was cast on a glass substrate, and UV-cured after drying. The efficiency of UV-curing process was monitored with gel percentage measurements. The thermal and mechanical properties of the fabricated UV-cured coatings were investigated through differential scanning calorimetry and tensile test and compared with the starch-based uncured casted coatings. A complete characterization of the surface properties was performed by means of pencil hardness, adhesion, solvent resistance, and surface tension measurements. The cross-linking by UV-curing significantly enhanced the mechanical and surface properties of the coating. The effect of UV-curing on the biodegradability of the coating was evaluated by following the enzymatic degradation by alpha-amylase by determining the amount of glucose and maltose released from the coatings. UV-cured methacrylated starch based coating with promising material and surface properties and retained biodegradation potential was demonstrated.
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