Polyether polyol‐based rigid polyurethane foams reinforced with soy protein fillers

In this work, soy protein/polyurethane (PU) composite foams were synthesized with polyether polyol and polyaryl polymethylene isocyanate as the starting materials, soy protein isolate as the reactive fillers, and water as the blowing agent. The structure and properties of the resulting composite foa...

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Bibliographic Details
Published inJournal of vinyl & additive technology Vol. 24; no. S1; pp. E105 - E111
Main Authors Tian, Huafeng, Wu, Jiali, Xiang, Aimin
Format Journal Article
LanguageEnglish
Published Brookfield John Wiley & Sons, Inc 01.05.2018
Subjects
Blowing agents
Bonding strength
Compressive strength
Crosslinking
Density
Fillers
Fourier transforms
Hydrogen bonding
Infrared spectra
Mechanical properties
Plastic foam
Polymers
Polyurethane foam
Proteins
Soy products
Thermal stability
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Summary:In this work, soy protein/polyurethane (PU) composite foams were synthesized with polyether polyol and polyaryl polymethylene isocyanate as the starting materials, soy protein isolate as the reactive fillers, and water as the blowing agent. The structure and properties of the resulting composite foams were characterized by Fourier transform infrared spectra, scanning electron microscope, close cell ratio, density, mechanical properties, and so on. Strong hydrogen bonding interactions as well as chemical crosslinking occurred between the soy protein filler and PU matrix. The composite foams have more cell density, in the meantime, the average cell size decreased. The close cell ratio and foam density increased with the increase of soy protein. In addition, the compressive strength and thermal stability were enhanced, mainly ascribing to the reinforcing effect as well as the crosslinking effect of reactive soy protein fillers. Therefore, the resulting composite foams would possess improved properties compared with neat PU foam and their applications could be highly enlarged. J. VINYL ADDIT. TECHNOL., 24:E105–E111, 2018. © 2017 Society of Plastics Engineers
ISSN:1083-5601
1548-0585
DOI:10.1002/vnl.21608