异氰酸酯
聚氨酯
可再生资源
单体
绿色化学
玻璃化转变
聚合物
发泡剂
化石燃料
高分子科学
化学
有机化学
化学工程
可再生能源
材料科学
复合材料
催化作用
工程类
反应机理
电气工程
作者
Guilhem Coste,Claire Negrell,Luc Avérous,Sylvain Caillol
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2022-06-16
卷期号:10 (26): 8549-8558
被引量:5
标识
DOI:10.1021/acssuschemeng.2c01885
摘要
The world has been facing a major resource crisis in the last few decades. In order to tackle such environmental issues, new solutions have to be found in order to replace fossil resources by more sustainable, biobased resources. One of the most promising biobased resources are vegetable oils, which are used as building blocks for renewable polymer synthesis. Industrial productions and the corresponding chemical structures make oleo-chemistry very attractive. Nevertheless, such building blocks have to compete with usual petrol-based monomers. Hence, this work focuses on the development of new foams in order to replace toxic isocyanate-based polyurethanes foams. Different efficient soft foams were obtained for the first time by aza-Michael reactions, using acrylated soybean oils and biobased amines, with an original chemical blowing system. Properties of the foams have been studied in order to determine the influence of the different structures in terms of morphologies, glass transition, hardness or deformation, etc. Homogeneous open-cell foams with a pore size from 0.1 to 0.5 mm were obtained. Flexible foams were obtained with glass transition from −20 to −7 °C. These soft foams demonstrated a time recovery of about a few seconds and exhibited similar properties to equivalent commercial fossil-polyurethane foams, without the use of highly toxic chemicals.
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