Preparation and Evaluation of Glucose Based Non-Isocyanate Polyurethane Self-Blowing Rigid Foams

Polymers

Siham Amirou¹  Xinyi Chen¹  Xuedong Xi¹  Antonio Pizzi¹  Christine Gerardin²  Hong Lei³ 

[1] LERMAB, University of Lorraine, 27 rue Philippe Seguin, 88000 Epinal, France;LERMAB, University of Lorraine, Boulevard des Aiguillettes, 54000 Nancy, France;Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming 650224, China;

关键词: non-isocyanate polyurethane;    nipu;    glucose;    rigid foams;    self-blowing;   

DOI  :  10.3390/polym11111802

来源: DOAJ

【 摘 要 】

A partially biobased self-blowing and self-hardening polyurethane foam from glucose-based non-isocyanate polyurethanes (g-NIPU) was prepared by reaction of glucose with dimethyl carbonate and hexamethylene diamine. However, these foam types generally require a high foaming temperature. In this paper, a self-blowing foam based on g-NIPU was prepared at room temperature by using maleic acid as an initiator and glutaraldehyde as a crosslinker. Water absorption, compression resistance, and fire resistance were tested. Scanning electron microscopy (SEM) was used to observe the foam cells structure. Middle infrared (ATR FT-MIR) and Matrix Assisted Laser Desorption Ionization Time-of-Flight (MALDI-TOF) mass spectrometry were used to help to analyze the reactions during the foaming process. The results obtained showed that self- blowing rigid foams have good compression, this being directly proportional to the foam density. Increasing the amount of glutaraldehyde or reducing maleic acid thickens the cell walls and increases the density of the foams. MALDI-TOF analysis showed that g-NIPU reacts with both maleic acid and glutaraldehyde. The foams presented poor fire resistance indicating that, as for isocyanate based polyurethane foams, addition of a fire retardant would be necessary.

【 授权许可】

Unknown