Ionic Liquid Catalysis in Cyclic Carbonate Synthesis for the Development of Soybean Oil-Based Non-Isocyanate Polyurethane Foams-Reference-Cited by-同舟云学术

Ionic Liquid Catalysis in Cyclic Carbonate Synthesis for the Development of Soybean Oil-Based Non-Isocyanate Polyurethane Foams

Published:2024-08-18 Issue:16 Volume:29 Page:3908
ISSN:1420-3049
Container-title:Molecules
language:en
Short-container-title:Molecules

Author:

Kiełkiewicz Damian¹²^ORCID,Siewniak Agnieszka³^ORCID,Gaida Rafał¹^ORCID,Greif Małgorzata¹,Chrobok Anna³^ORCID

Affiliation:

1. Łukasiewicz Research Network—Institute of Heavy Organic Synthesis “Blachownia”, Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland

2. Department of Chemical Organic Technology and Petrochemistry, PhD School, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland

3. Department of Chemical Organic Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland

Abstract

A method for obtaining non-isocyanate polyurethane (NIPU) foams from cyclic carbonate (CC) based on soybean oil was developed. For this purpose, cyclic carbonate was synthesized from epoxidized soybean oil and CO2 using various ionic liquids (ILs) as catalysts. Among the tested ILs, the highest selectivity (100%) and CC yield (98%) were achieved for 1-ethyl-3-methylimidazolium ([emim]Br). Without any purification, the resulting cyclic carbonate was reacted directly with diethylenetriamine as a model crosslinking agent to produce NIPU foams. It was found that the soybean oil-based CC synthesized with bromide imidazolium ionic liquids exhibited significantly shorter gelling times (8 min 50 s for [emim]Br and 9 min 35 s for [bmim]Br) compared to those obtained with the conventional TBAB catalyst (26 min 15 s). A shorter gelling time is a crucial parameter for the crosslinking process in foams. The obtained foams were subjected to mechanical tests and a morphology analysis.

Funder

Ministry of Science and Higher Education of Poland

Publisher

MDPI AG

Link

https://www.mdpi.com/1420-3049/29/16/3908/pdf

Reference46 articles.

1. Polyurethane types, synthesis and applications—A review;Akindoyo;RSC Adv.,2016

2. A brief discussion on advances in polyurethane applications;Das;Adv. Ind. Eng. Polym. Res.,2021

3. Introduction to Polyurethane Chemistry;Gupta;Polyurethane Chemistry: Renewable Polyols and Isocyanates,2021

4. Non-isocyanate polyurethanes: Synthesis, properties, and applications;Rokicki;Polym. Adv. Technol.,2015

5. A review on the production, properties and applications of non-isocyanate polyurethane: A greener perspective;Khatoon;Prog. Org. Coat.,2021