1. UV-Cured Biodegradable Methacrylated Starch-Based Coatings
- Author
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Chiara Tonda-Turo, Minna Hakkarainen, Irene Carmagnola, Marco Sangermano, and Camilla Noè
- Subjects
UV-Curing ,Aqueous solution ,Materials science ,biodegradable coatings ,Starch ,starch ,starch-based coatings, UV-Curing, biodegradable polymeric coatings ,Surfaces and Interfaces ,Maltose ,biodegradable polymeric coatings ,engineering.material ,Biodegradation ,Surfaces, Coatings and Films ,chemistry.chemical_compound ,Differential scanning calorimetry ,chemistry ,Coating ,Chemical engineering ,lcsh:TA1-2040 ,Materials Chemistry ,UV curing ,engineering ,starch-based coatings ,lcsh:Engineering (General). Civil engineering (General) ,Tensile testing - Abstract
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.
- Published
- 2021