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Fibers 2018, 6(2), 26; https://doi.org/10.3390/fib6020026

Various Extraction Methods Influence the Adhesive Properties of Dried Distiller’s Grains and Solubles, and Press Cakes of Pennycress (Thlaspi arvense L.) and Lesquerella [Lesquerella fendleri (A. Gary) S. Watson], in the Fabrication of Lignocellulosic Composites

1
Functional Foods Research Unit, National Center for Agricultural Utilization, Agricultural Research Service, U.S. Department of Agriculture, 1815 N. University Street, Peoria, IL 61601, USA
2
Bio-Oils Research Unit, National Center for Agricultural Utilization, Agricultural Research Service, U.S. Department of Agriculture, 1815 N. University Street, Peoria, IL 61601, USA
*
Author to whom correspondence should be addressed.
Received: 22 February 2018 / Revised: 19 March 2018 / Accepted: 5 April 2018 / Published: 24 April 2018
(This article belongs to the Special Issue Natural Fibre Biocomposites)
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Abstract

Lignocellulosic composite (LC) panels were fabricated using an adhesive matrix prepared from three different agricultural by-products: dried distillers grains with solubles (DDGS), pennycress (Thlaspi arvense L.) press cake (PPC), or lesquerella [Lesquerella fendleri (A. Gary) S. Watson] press cake (LPC) reinforced with Paulownia elongata L. wood (PW) particles. The goal in this study was to assess the mechanical properties of composites utilizing these low-cost matrix materials, which were subjected to various oil extraction methods. Three types of oil extraction methods were utilized: ethanol, supercritical CO2, and hexane, in order to generate matrix materials. These matrix materials were mixed with equal proportions of PW and hot pressed to generate panels. Overall, hexane extraction was the best method to enhance the mechanical properties of the matrices used to fabricate lignocellulosic composites. LPC’s produced a matrix that gave the resulting composite superior flexural properties compared to composites generated from DDGS and PPC matrices. The mechanical properties of composites generated from soy products (soybean meal flour or soy protein isolate) were similar to those derived from DDGS, PPC, or LPC. The dimensional stability properties of LCs were improved when the hexane extraction method was employed, unlike with the other extraction methods that were used to generate matrices. View Full-Text
Keywords: flexural properties; panels; by-products; non-dietetic uses; modulus of rupture; modulus of elasticity flexural properties; panels; by-products; non-dietetic uses; modulus of rupture; modulus of elasticity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Tisserat, B.; Eller, F.; Harry-O’kuru, R. Various Extraction Methods Influence the Adhesive Properties of Dried Distiller’s Grains and Solubles, and Press Cakes of Pennycress (Thlaspi arvense L.) and Lesquerella [Lesquerella fendleri (A. Gary) S. Watson], in the Fabrication of Lignocellulosic Composites. Fibers 2018, 6, 26.

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