生态友好型和随时上市的聚氨酯:以实验设计为指导的有毒催化剂和化石基异氰酸酯替代品。

IF 7.5 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ChemSusChem Pub Date : 2024-12-14 DOI:10.1002/cssc.202402451
Gabriele Viada, Nicole Mariotti, Simone Galliano, Alberto Menozzi, Claudia Barolo, Matteo Bonomo
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引用次数: 0

摘要

在这篇文章中,我们解决了氢基催化剂和化石衍生的异氰酸酯前体的替代问题,以形成一种更可持续的聚氨酯热固性树脂(pu),模拟了光电子工业封装中采用的完全化石基树脂的性能。为此,通过多元化学计量学方法,即实验设计(DoE),研究了混合Bi-Zn催化剂和71%生物基异氰酸酯。DoE允许我们研究不同配方因素对选定参数的影响,例如膜的柔韧性和透明度或凝胶时间。更详细地说,研究发现,只有当使用基于化石的异氰酸酯时,少量的富锌催化混合物才会导致即将上市的聚氨酯。不同的是,以生物基异氰酸酯配制的pu虽然具有较高的生物基含量,但光学纯度不足,影响了其市场可接受性。然而,在配方中添加可忽略不计的特定长链脂肪酸作为反应性调节剂,可以使树脂无气泡且易于上市,显示出令人印象深刻的65% w/w的循环和生物基成分含量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Eco-Friendly and Ready-To-Market Polyurethanes: A Design of Experiment-Guided Substitution of Toxic Catalyst and Fossil-Based Isocyanate.

In this contribution, we tackle the replacement of the Hg-based catalyst and fossil-derived isocyanate precursors toward the formulation of a more sustainable polyurethane thermosetting resins (PUs), emulating the performance of a fully fossil-based one employed in industrial encapsulation of optoelectronics. A mixed Bi-Zn catalyst and a 71 % bio-based isocyanate are exploited at this aim through multivariate chemometric approaches, namely Design of Experiment (DoE). DoE allows us to investigate the effect of different formulation factors on selected parameters, such as the film flexibility and transparency or the gel time. More in detail, it is found that a low amount of Zn-rich catalytic mixture leads to a ready-to-market polyurethane only when a fossil-based isocyanate is used. Differently, PUs formulated with bio-based isocyanate, albeit showing a higher bio-based content, present an insufficient optical purity, jeopardizing their market acceptability. Nevertheless, adding a negligible amount of a specific long chain fatty acid as reactivity modulator in the formulation leads to a bubbles-free and ready-to-market resin showing an impressive 65 % w/w content of circular and bio-based components.

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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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