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Title: Preparation and characterization of the nanocomposites from chemically modified nanocellulose and poly(lactic acid)

Source: Journal of Renewable Materials. 5(5): 410-422.

Author(s)Wei, Liqing; Luo, Shupin; McDonald, Armando G.; Agarwal, Umesh P.; Hirth, Kolby C.; Matuana, Laurent M.; Sabo, Ronald C.; Stark, Nicole M.

Publication Year: 2017  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-1B  FPL-4709-2B

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.

Keywords: Nanocellulose; modification; nanocomposites; characterization

Publication Review Process: Formally Refereed

File size: 1,020 kb(s)

Date posted: 04/09/2018

This publication is also viewable on Treesearch:  view
RITS Product ID: 89912
Current FPL Scientists associated with this product (listed alphabetically)
Agarwal, Umesh P.
Research Chemist
Sabo, Ronald C.
Research Materials Engineer
Stark, Nicole M.
Research Chemical Engineer

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