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Semi-Interpenetrating Novolac-Epoxy Thermoset Polymer Networks Derived from Plant Biomass

Mehul Barde1,2, Yusuf Celikbag3, Brian Via3, Sushil Adhikari4, Maria L. Auad1,2,*

Center for Polymers and Advanced Composites, Auburn University, Auburn, 36849, AL, United States of America.
Department of Chemical Engineering, Auburn University, Auburn, 36849, AL, United States of America.
Forest Products Development Center, Auburn University, Auburn, 36849, AL, United States of America.
Department of Biosystems Engineering, Auburn University, Auburn, 36849, AL, United States of America.

*Corresponding author: email

Journal of Renewable Materials 2018, 6(7), 724-736. https://doi.org/10.32604/JRM.2018.00116

Abstract

Bio-based phenol-formaldehyde polymer (BioNovolac) was developed by reacting molar excess of bio-oil/phenol with formaldehyde in acidic medium. Glycidyl 3,5-diglycidoxybenzoate (GDGB), was prepared by direct glycidylation of α-resorcylic acid (RA), a naturally occurring phenolic monomer. GDGB was crosslinked in the presence of BioNovolac by anionic polymerization. Fourier transform infrared spectroscopy (FTIR) confirmed the formation of semi-interpenetrating polymer networks. The glass transition temperature and moduli of bio-based crosslinked systems were observed to increase with increasing GDGB content. Active chain density and mass retention measured by dynamic mechanical analysis (DMA) and Soxhlet extraction, respectively, indicated a high crosslink density of the cured networks. Scanning electron microscopy (SEM) images depicted the homogeneity of the bulk phase. The preparation of bio-based epoxy-novolac thermoset network resulted in reduced consumption of petroleum-based chemicals.

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APA Style
Barde, M., Celikbag, Y., Via, B., Adhikari, S., Auad, M.L. (2018). Semi-interpenetrating novolac-epoxy thermoset polymer networks derived from plant biomass. Journal of Renewable Materials, 6(7), 724-736. https://doi.org/10.32604/JRM.2018.00116
Vancouver Style
Barde M, Celikbag Y, Via B, Adhikari S, Auad ML. Semi-interpenetrating novolac-epoxy thermoset polymer networks derived from plant biomass. J Renew Mater. 2018;6(7):724-736 https://doi.org/10.32604/JRM.2018.00116
IEEE Style
M. Barde, Y. Celikbag, B. Via, S. Adhikari, and M.L. Auad "Semi-Interpenetrating Novolac-Epoxy Thermoset Polymer Networks Derived from Plant Biomass," J. Renew. Mater., vol. 6, no. 7, pp. 724-736. 2018. https://doi.org/10.32604/JRM.2018.00116

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cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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