Oxazolidone formation: myth or fact? The case of biobased polyurethane foams from different epoxidized triglycerides

2021 ◽  
Author(s):  
Julien Peyrton ◽  
Luc Avérous
Keyword(s):  
Polyurethane Foams ◽  
Biobased Polyurethane

Study of the oxazolidone formation by reaction between disubstituted epoxide and isocyanate in polyurethane foams and model.

Synthesis of Biobased Polyurethane Foams From Agricultural and Forestry Wastes

2020 ◽  
pp. 137-156
Author(s):  
Hongwei Li ◽  
Zhongshun Yuan ◽  
Yongsheng Zhang ◽  
Chun Chang ◽  
Chunbao (Charles) Xu
Keyword(s):  
Polyurethane Foams ◽  
Biobased Polyurethane

scholarly journals NANOCELLULOSE FILLED BIOBASED POLYURETHANE FOAMS

2018 ◽  
Author(s):  
E.F. Kerche ◽  
R.A. Delucis ◽  
W.L.E. Magalhães ◽  
S.C. Amico
Keyword(s):  
Polyurethane Foams ◽  
Biobased Polyurethane

Biobased polyurethane foams modified with natural fillers

Polimery ◽  
2015 ◽  
Vol 60 (09) ◽  
pp. 592-599 ◽  
Author(s):  
Aleksander Prociak ◽  
Maria Kurañska ◽  
Elzbieta Malewska ◽  
Leonard Szczepkowski ◽  
Milena Zieleniewska ◽  
...  
Keyword(s):  
Polyurethane Foams ◽  
Biobased Polyurethane ◽  
Natural Fillers

scholarly journals Biobased Polyurethane Foams Based on New Polyol Architectures from Microalgae Oil

2020 ◽  
Vol 8 (32) ◽  
pp. 12187-12196
Author(s):  
Julien Peyrton ◽  
Clémence Chambaretaud ◽  
Alexandru Sarbu ◽  
Luc Avérous
Keyword(s):  
Polyurethane Foams ◽  
Microalgae Oil ◽  
Biobased Polyurethane

scholarly journals The Use of Biodiesel Residues for Heat Insulating Biobased Polyurethane Foams

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Nihan Özveren ◽  
M. Özgür Seydibeyoğlu
Keyword(s):  
Crude Glycerol ◽  
Polyurethane Foams ◽  
Biodiesel Production ◽  
Foam Formation ◽  
Compression Tests ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Biobased Polyurethane ◽  
Polyether Polyol ◽  
Biodiesel Industry ◽  
Critical Aspects

The commercial and biobased polyurethane foams (PUF) were produced and characterized in this study. Commercial polyether polyol, crude glycerol, methanol-free crude glycerol, and pure glycerol were used as polyols. Crude glycerol is byproduct of the biodiesel production, and it is a kind of biofuel residue. Polyol blends were prepared by mixing the glycerol types and the commercial polyol with different amounts, 10 wt%, 30 wt%, 50 wt%, and 80 wt%. All types of polyol blends were reacted with polymeric diphenyl methane diisocyanates (PMDI) for the production of rigid foams. Thermal properties of polyurethane foams are examined by thermogravimetric analysis (TGA) and thermal conductivity tests. The structures of polyurethane foams were examined by Fourier Transformed Infrared Spectroscopy (FTIR). Changes in morphology of foams were investigated by Scanning Electron Microscopy (SEM). Mechanical properties of polyurethane foams were determined by compression tests. This study identifies the critical aspects of polyurethane foam formation by the use of various polyols and furthermore offers new uses of crude glycerol and methanol-free crude glycerol which are byproducts of biodiesel industry.

Forest-based resources as fillers in biobased polyurethane foams

2017 ◽  
Vol 135 (3) ◽  
pp. 45684 ◽  
Author(s):  
Rafael de Avila Delucis ◽  
Washington Luiz Esteves Magalhães ◽  
Cesar Liberato Petzhold ◽  
Sandro Campos Amico
Keyword(s):  
Polyurethane Foams ◽  
Biobased Polyurethane

scholarly journals Characterization of Biobased Polyurethane Foams Employing Lignin Fractionated from Microwave Liquefied Switchgrass

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Xingyan Huang ◽  
Cornelis F. De Hoop ◽  
Jiulong Xie ◽  
Chung-Yun Hse ◽  
Jinqiu Qi ◽  
...  
Keyword(s):  
Apparent Density ◽  
Foam Cell ◽  
Lignin Content ◽  
Decomposition Temperature ◽  
Polyurethane Foams ◽  
Mechanical And Thermal Properties ◽  
Sem Images ◽  
Initial Decomposition Temperature ◽  
Biobased Polyurethane ◽  
Pu Foams

Lignin samples fractionated from microwave liquefied switchgrass were applied in the preparation of semirigid polyurethane (PU) foams without purification. The objective of this study was to elucidate the influence of lignin in the PU matrix on the morphological, chemical, mechanical, and thermal properties of the PU foams. The scanning electron microscopy (SEM) images revealed that lignin with 5 and 10% content in the PU foams did not influence the cell shape and size. The foam cell size became larger by increasing the lignin content to 15%. Fourier transform infrared spectroscopy (FTIR) indicated that chemical interactions occurred between the lignin hydroxyl and isocyanate revealing that lignin was well dispersed in the matrix materials. The apparent density of the foam with 10% lignin increased by 14.2% compared to the control, while the foam with 15% lignin had a decreased apparent density. The effect of lignin content on the mechanical properties was similar to that on apparent density. The lignin containing foams were much more thermally stable than the control foam as evidenced by having higher initial decomposition temperature and maximum decomposition rate temperature from the thermogravimetric analysis (TGA) profiles.

Sign in / Sign up

Export Citation Format

Share Document