Fabrication of Food-Safe Water-Resistant Paper Coatings Using a Melamine Primer and Polysiloxane Outer Layer
| Autor: | Muhammad Rabnawaz, Zhao Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Primer (paint)
Fabrication Materials science Absorption of water General Chemical Engineering 02 engineering and technology General Chemistry engineering.material Raw material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Article 0104 chemical sciences Contact angle lcsh:Chemistry chemistry.chemical_compound Coating chemistry lcsh:QD1-999 engineering Composite material 0210 nano-technology Melamine Layer (electronics) |
| Zdroj: | ACS Omega, Vol 3, Iss 9, Pp 11909-11916 (2018) ACS Omega |
| ISSN: | 2470-1343 |
| Popis: | Paper-based materials are highly desirable as packaging materials due to their numerous advantages that include low cost, renewability, and biodegradability. However, their hydrophilicity has limited their range of applications. Reported herein is a facile and economical approach for the preparation of biodegradable water-resistant paper for food-contact applications. Commercial printing paper and cup papers are coated with melamine, which is FDA approved for food-contact applications. Subsequently, a water-repellent outer layer is applied using poly(dimethylsiloxane) (PDMS)-isocyanate. A relationship between the PDMS concentration and water contact angles (WCAs) of the obtained coating was studied. Typically, the coated cup paper and printing paper had coating loadings of 1.61 ± 1.10 and 0.93 ± 0.74 wt %, respectively. After the coatings had been applied, the WCAs were very high (>125°), and water absorption had decreased by 70% for printing paper and by 35% for cup paper. Considering the facile fabrication method and the low-cost food-safe raw materials, herein, this approach will have great potential for the large-scale production of materials for use in food- and nonfood contact applications. |
| Databáze: | OpenAIRE |
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