UV-Curable Bio-Based Pressure-Sensitive Adhesives: Tuning the Properties by Incorporating Liquid-Phase Alkali Lignin-Acrylates
Autor: | Rhiya Paul, Ben John, Sushanta K. Sahoo |
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Rok vydání: | 2022 |
Předmět: | |
Zdroj: | Biomacromolecules. 23:816-828 |
ISSN: | 1526-4602 1525-7797 |
DOI: | 10.1021/acs.biomac.1c01249 |
Popis: | Renewable pressure-sensitive adhesive (PSA) is an emerging field in adhesive industries as it is an excellent green alternative to depleting petroleum-sourced adhesives. Herein, we report the development of novel bio-sourced UV-curable PSAs with ∼50% biomass content originating from alkali lignin, cardanol, and linseed oil. Bio-based prepolymers cardanoldiol acrylate (CDA) and acrylated epoxidized linseed oil (AELO) were synthesized and used to prepare polyurethane acrylate (PUA)-based PSA systems. Alkali-lignin-based acrylates (LAs) in the liquid phase were incorporated into the PUA/AELO PSA system at 10-30 wt % loading to tune the functional properties. The Fourier transform infrared spectroscopy (FTIR) analysis showed weakened cross-linking in the PSA systems on LA addition, which is desirable for removable PSA applications. The single glass-transition temperature ( |
Databáze: | OpenAIRE |
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