Effect of Nanocellulose on the Properties of Cottonseed Protein Isolate as a Paper Strength Agent |
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| Authors: | Jacobs H Jordan Huai N Cheng Michael W Easson Wei Yao Brian D Condon Bruce C Gibb |
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| Institution: | 1.The Southern Regional Research Center, Agricultural Research Service, USDA, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA; (J.H.J.); (H.N.C.); (B.D.C.);2.Department of Chemistry, 2015 Percival Stern Hall, 6400 Freret Street, Tulane University, New Orleans, LA 70118, USA; (W.Y.); (B.C.G.) |
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| Abstract: | Currently, there is an increasing interest in the use of biopolymers in industrial applications to replace petroleum-based additives, since they are abundantly available, renewable and sustainable. Cottonseed protein is a biopolymer that, when used as a modifier, has shown improved performance for wood adhesives and paper products. Thus, it would be useful to explore the feasibility of using cellulose nanomaterials to further improve the performance of cottonseed protein as a paper strength agent. This research characterized the performance of cottonseed protein isolate with/without cellulose nanofibers (CNFs) and cellulose nanocrystals (CNCs) to increase the dry strength of filter paper. An application of 10% protein solution with CNCs (10:1) or CNFs (50:1) improved the elongation at break, tensile strength and modulus of treated paper products compared to the improved performance of cottonseed protein alone. Further analysis using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) indicated that the cottonseed protein/nanocellulose composites interacted with the filter paper fibers, imparting an increased dry strength. |
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| Keywords: | cottonseed protein cellulose nanocrystals cellulose nanofibers paper dry strength |
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