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Effects of chain extender in biodegradable polyurethane foams

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Published/Copyright: April 17, 2014
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 34 Issue 6

Abstract

Molded flexible polyurethane (PU) foams were synthesized from a starch/petroleum based polyol, 2,4/2,6-toluene diisocyanate (TDI-80), using a one shot method with water as the blowing agent. The effects of chain extender type [starch (S series), diethanolamine (DEA, D series), glycerol (G series)] and content (0, 2, 5, 10 pphr) were extensively studied. The rate of foam formation, density, compression strength, glass transition temperature (Tg) and rubbery modulus of the foam increased with the addition and increasing content of extender. At the same extender content, DEA showed the highest of these properties, while starch showed the lowest. The rate of biodegradation in a buffer solution decreased with the addition of DEA and glycerol, due to the increased crosslinking density and hard segment content, but increased with starch, owing to its biodegradability.

Keywords: biodegradable; chain extender; density; polyurethane foam; starch
Corresponding authors: Sun Hong Kwon, Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 609–735, Korea, e-mail: ; and Byung Kyu Kim, Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea, e-mail:

Acknowledgments

This study was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) through GCRC-SOP (No. 2011-0030668).

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Received: 2013-7-1
Accepted: 2014-3-14
Published Online: 2014-4-17
Published in Print: 2014-8-1

©2014 by De Gruyter

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  1. Frontmatter
  2. Original articles
  3. Phase equilibria modeling of polystyrene/solvent mixtures using an artificial neural network and cubic equations of state
  4. Influence of polymer concentration in casting solution and solvent-solute-membrane interactions on performance of polyphenylsulfone (PPSU) nanofiltration membrane in alcohol solvents
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  9. Characterization of styrene butadiene rubber and microwave devulcanized ground tire rubber composites
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https://doi.org/10.1515/polyeng-2013-0158
Keywords for this article
biodegradable; chain extender; density; polyurethane foam; starch

Articles in the same Issue

  1. Frontmatter
  2. Original articles
  3. Phase equilibria modeling of polystyrene/solvent mixtures using an artificial neural network and cubic equations of state
  4. Influence of polymer concentration in casting solution and solvent-solute-membrane interactions on performance of polyphenylsulfone (PPSU) nanofiltration membrane in alcohol solvents
  5. Optimal mechanical and gas permeation properties of polypropylene-organically modified montmorillonite (PP-OMMT) nanocomposites
  6. Mechanical and barrier properties of copolyester-nanoclay composites
  7. Evaluation performance of multiple plasticizer systems on the physicomechanical, crystallinity and thermogravimetry of polyvinyl chloride
  8. A study on glass fiber reinforced composites from 2,3-epoxypropyl-3-(2-furyl) acrylate and methyl methacrylate
  9. Characterization of styrene butadiene rubber and microwave devulcanized ground tire rubber composites
  10. Effects of chain extender in biodegradable polyurethane foams
  11. Processability and mechanical properties of bisbenzoxazine modified by the cardanol-based aromatic diamine benzoxazine
  12. Tribological performance of polymethyl methacrylate as an aviation polymer
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