Synthesis and performance evaluation of soybased aliphatic polyurethane nanocomposites for pultrusion

R. R. Vuppalapati, V. G K Menta, K. Chandrashekhara, T. Schuman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Polyurethane (PU) resin systems are generally characterized as aromatic and aliphatic. Aliphatic PU has lower mechanical properties than the aromatic resin system due to its chemical structure. The objective of the present work is to improve the mechanical properties of aliphatic resin system by exfoliating silicate nano particles. A pultrudable, soy-based, polyol-isocyanate aliphatic resin has been used as the base system. Nanocomposites were synthesized using the base resin and modified montmorillonite (MMT) clay. Modification of Na-MMT was confirmed by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy analyses. Increase in the basal spacing of the nanoclay was observed by wide angle X-ray diffraction. The curing mechanism of soy-based PU resin with 1wt% of triethanol amine/methyl iodide exchanged MMT clay was studied using differential scanning calorimetry as well as FTIR. Tensile testing of the nanocomposites showed improved modulus when compared to the neat aliphatic resin system. Soy-based nanocomposites hold great promise as environmentally friendly and low cost materials for structural and automotive applications.

Original languageEnglish (US)
Title of host publication2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry
Subtitle of host publicationAdvanced Materials, Applications, and Processing Technology
StatePublished - Aug 30 2011
Event2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry: Advanced Materials, Applications, and Processing Technology - Long Beach, CA, United States
Duration: May 23 2011May 26 2011

Publication series

NameInternational SAMPE Technical Conference

Other

Other2011 SAMPE Spring Technical Conference and Exhibition - State of the Industry: Advanced Materials, Applications, and Processing Technology
Country/TerritoryUnited States
CityLong Beach, CA
Period5/23/115/26/11

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