Rigid polyurethane foams from a soybean oil-based Polyol

Suqin Tan, Tim Abraham, Don Ference, Christopher W. MacOsko

Research output: Contribution to journalArticlepeer-review

209 Scopus citations

Abstract

Polyurethane (PU) rigid foams were synthesized by substituting a polypropylene-based polyol with soybean oil-based polyol (SBOP). All the soy-based foams maintained a regular cell structure and had even smaller average cell size than the control foams. The density of soy-based foams was within 5% of the controls, except that the density of foams from 100% SBOP was 17% higher. Soy-based foams also had comparable initial thermal conductivity (k value) and closed cell content, higher Tg and compressive strength. However, while foams from 50% SBOP showed similar increase in k value to the 0% SBOP foams, under accelerated aging conditions, the 100% SBOP foams aged faster. Gas permeation tests performed on PU thin films showed higher N2 permeation for PU thin films made from SBOP which is believed to be the cause of accelerated thermal aging.

Original languageEnglish (US)
Pages (from-to)2840-2846
Number of pages7
JournalPolymer
Volume52
Issue number13
DOIs
StatePublished - Jun 8 2011

Keywords

  • Polyurethane foam
  • Soybean oil-based polyol
  • Thermal conductivity

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