Synthesis and characterization of rigid polyurethane foams from algae oil using biobased chain extenders

A phosphaphenanthrene groups containing soybean oil based polyol (DSBP) was synthesized by epoxidized soybean oil (ESO) and 9,10-dihydro-oxa-10-phosphaphenanthrene-10-oxide (DOPO). Soybean oil based polyol (HSBP) was synthesized by ESO and H2O. The chemical structure of DSBP and HSBP were characterized with FT-IR and 1H NMR. The corresponding rigid polyurethane foams (RPUFs) were prepared by mixing DSBP with HSBP. The results revealed apparent density and compression strength of RPUFs decreased with increasing the DSBP content. The cell structure of RPUFs was examined by scanning electron microscope (SEM) which displayed the cells as spherical or polyhedral. The thermal degradation and flame retardancy of RPUFs were investigated by thermogravimetric analysis, limiting oxygen index (LOI), and UL 94 vertical burning test. The degradation activation energy (Ea) of first degradation stage reduced from 80.05 kJ/mol to 37.84 kJ/mol with 80 wt% DSBP. The RUPF with 80 wt% DSBP achieved UL94 V-0 rating and LOI 28.3. The results showed that the flame retardant effect was mainly in both gas phase and condensed phase.

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Synthesis and Characterization of Bio-Based Rigid Polyurethane Foams with Varying Amount of Blowing Agent

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.803.346 ◽

2019 ◽

Vol 803 ◽

pp. 346-350

Author(s):

Jessalyn C. Grumo ◽

Lady Jaharah Y. Jabber ◽

Arnold A. Lubguban ◽

Rey Y. Capangpangan ◽

Arnold C. Alguno

Keyword(s):

Polyurethane Foam ◽

Functional Group ◽

Polyurethane Foams ◽

Synthesis And Characterization ◽

Rigid Polyurethane Foam ◽

Sem Images ◽

Average Cell Size ◽

Average Cell ◽

Blowing Agent

We report on the rigid polyurethane foam (RPUF) with varying amount of blowing agent. The effects of blowing agent in the formation of polyurethane will be characterized using scanning electron microscopy (SEM) and fourier transform infrared (FTIR) spectroscopy. SEM images revealed that varying the amount of blowing agent will significantly change the surface morphology of the resulting RPUF. The average cell size of the RPUF increases with increasing amount of blowing agent. Moreover, FTIR results revealed the presence of functional group related to formation of urethane bonds such as N-H, C=O, C=N and C-O-C stretching suggesting that polyurethane foam was successfully synthesized. This simple and straightforward process of RPUF using water as blowing agent will be economical.

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Synthesis and characterization of sustainable polyurethane foams based on polyhydroxyls with different terminal groups

Polymer ◽

10.1016/j.polymer.2018.06.077 ◽

2018 ◽

Vol 149 ◽

pp. 134-145 ◽

Cited By ~ 18

Author(s):

M. Stanzione ◽

V. Russo ◽

M. Oliviero ◽

L. Verdolotti ◽

A. Sorrentino ◽

...

Keyword(s):

Polyurethane Foams ◽

Synthesis And Characterization

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Synthesis and Characterization of Biodegradable Polyhydroxy Butyrate-Based Polyurethane Foams

Journal of Cellular Plastics ◽

10.1177/0021955x03039002002 ◽

2003 ◽

Vol 39 (2) ◽

pp. 101-116 ◽

Cited By ~ 9

Author(s):

Hong-Ru Lin ◽

Chun-Jung Kuo ◽

Yiu-Jiuan Lin

Keyword(s):

Polyurethane Foams ◽

Synthesis And Characterization ◽

Polyhydroxy Butyrate

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Preparation and Characterization of Excellent Flame Retarded Rigid Polyurethane Foams

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.374-377.1563 ◽

2011 ◽

Vol 374-377 ◽

pp. 1563-1566

Author(s):

An Zhen Zhang ◽

Yi He Zhang

Keyword(s):

Flame Retardant ◽

Flame Retardants ◽

Polyurethane Foams ◽

Expandable Graphite ◽

Dimethyl Methylphosphonate ◽

Limiting Oxygen Index ◽

Rigid Polyurethane Foams ◽

Foaming Process ◽

Flame Retarded

Rigid polyurethane foams were excellent thermal insulation materials with widely used, which was highly flammable at the same time. In order to obtain safe application, flame retarded polyurethane foams were needed. In this paper, series flame retarded rigid polyurethane foams were prepared with loading different flame retardants such as ammonium polyphosphate, expandable graphite, red phosphorus, Tri (2-chloroethyl) phosphate and dimethyl methylphosphonate. The effects of flame retardants on the foaming-process and flame retardant property of the rigid polyurethane foams were investigated by otary viscometer and limiting oxygen index. The results showed that the combination of solid and liquid flame retardants was necessary to improve the flame retardant and different flame retardants played synergistic roles in rigid polyurethane foams. The limiting oxygen indexes of the foams could be up to 30wt% and 29.6% with 25wt% solid flame retardants and 10wt% liquid retardants, respectively.

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