聚氨酯
环境友好型
材料科学
纤维素
高分子科学
绿色化学
纳米技术
生化工程
化学工程
有机化学
化学
复合材料
工程类
催化作用
生态学
离子液体
生物
作者
Arantzazu Santamaría-Echart,Isabel P. Fernandes,Maria Filomena Barreiro,María Ángeles Corcuera,Arantxa Eceiza
出处
期刊:Polymers
[MDPI AG]
日期:2021-01-27
卷期号:13 (3): 409-409
被引量:72
标识
DOI:10.3390/polym13030409
摘要
Polyurethanes and polyurethane-ureas, particularly their water-based dispersions, have gained relevance as an extremely versatile area based on environmentally friendly approaches. The evolution of their synthesis methods, and the nature of the reactants (or compounds involved in the process) towards increasingly sustainable pathways, has positioned these dispersions as a relevant and essential product for diverse application frameworks. Therefore, in this work, it is intended to show the progress in the field of polyurethane and polyurethane-urea dispersions over decades, since their initial synthesis approaches. Thus, the review covers from the basic concepts of polyurethane chemistry to the evolution of the dispersion’s preparation strategies. Moreover, an analysis of the recent trends of using renewable reactants and enhanced green strategies, including the current legislation, directed to limit the toxicity and potentiate the sustainability of dispersions, is described. The review also highlights the strengths of the dispersions added with diverse renewable additives, namely, cellulose, starch or chitosan, providing some noteworthy results. Similarly, dispersion’s potential to be processed by diverse methods is shown, evidencing, with different examples, their suitability in a variety of scenarios, outstanding their versatility even for high requirement applications.
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