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Preparation and Characterization of the Nanocomposites from Chemically Modified Nanocellulose and Poly(lactic acid)

Liqing Wei1, Shupin Luo2, Armando G. McDonald2, Umesh P. Agarwal1, Kolby C. Hirth1, Laurent M. Matuana3, Ronald C. Sabo1* , Nicole M. Stark1*

USDA Forest Service, Forest Products Laboratory, One Gifford Pinchot Drive, Madison, WI 53726, United States
Renewable Materials Program, Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, ID 83844-1132, United States
School of Packaging, Michigan State University, East Lansing, MI 48824, United States

*Corresponding authors: email; email

Journal of Renewable Materials 2017, 5(5), 410-422. https://doi.org/10.7569/JRM.2017.634144

Abstract

Cellulose nanocrystals (CNCs) are renewable and sustainable filler for polymeric nanocomposites. However, their high hydrophilicity limits their use with hydrophobic polymer for composite materials. In this study, freeze-dried CNCs were modified by transesterification with canola oil fatty acid methyl ester to reduce the hydrophilicity. The transesterified CNCs (CNCFE) were compounded with PLA into nanocomposites. CNCFE with long-chain hydrocarbons plays a role as plasticizer. Increasing CNCFE loadings resulted in clear plasticizing effects. Lower Tg and Tm were achieved for CNCFE-based nanocomposites. Plasticizing nanocomposite melt with CNCFE can mitigate the degradation of CNCs during thermal processing. The elongation at break of nanocomposites containing 5% CNCFE was increased. Dynamic rheological study showed the highest elastic and viscous moduli (G′ and G″) and complex viscosity (G*) of nanocomposites with addition of 2% CNCFE. By tailoring the loadings of the transesterified CNCs, tunable structure and properties of nanocomposites can be obtained.

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APA Style
Wei, L., Luo, S., McDonald, A.G., Agarwal, U.P., Hirth, K.C. et al. (2017). Preparation and characterization of the nanocomposites from chemically modified nanocellulose and poly(lactic acid). Journal of Renewable Materials, 5(5), 410-422. https://doi.org/10.7569/JRM.2017.634144
Vancouver Style
Wei L, Luo S, McDonald AG, Agarwal UP, Hirth KC, Matuana LM, et al. Preparation and characterization of the nanocomposites from chemically modified nanocellulose and poly(lactic acid). J Renew Mater. 2017;5(5):410-422 https://doi.org/10.7569/JRM.2017.634144
IEEE Style
L. Wei et al., "Preparation and Characterization of the Nanocomposites from Chemically Modified Nanocellulose and Poly(lactic acid)," J. Renew. Mater., vol. 5, no. 5, pp. 410-422. 2017. https://doi.org/10.7569/JRM.2017.634144



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