Journal
CARBOHYDRATE POLYMERS
Volume 111, Issue -, Pages 442-448Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2014.04.049
Keywords
Nano-cellulose Fiber; PLA; Nanocomposites; WVTR; Biodegradable
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Funding
- NSERC Strategic Network - Innovative Green Wood Fibre Products (Canada)
- China Scholarship Council (CSC)
- National Natural Science Foundation of China (NSFC) [51379077]
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New biodegradable nanocomposites have been successfully prepared by incorporating modified nanocellulose fibers (NCF) in a biodegradable polylactic acid (PLA) matrix in this work. The hydrophobic-modified NCF was obtained by grafting hydrophobic monomers on NCF to improve the compatibility between NCF and PLA during blending. The resulting NCF/PLA composites were then applied on paper surface via a cast-coating process in an attempt to reduce the water vapor transmission rate (WVTR) of paper. The WVTR tests, conducted under various testing conditions and with different coating weights, demonstrated that the modified NCF/PLA composites coating played a critical role in lowering WVTR of paper. The lowest WVTR value was 34 g/m(2)/d, which was obtained with an addition of 1% of modified NCF to PLA and the composites coating weight at 40 g/m(2) and substantially lower than the control value at 1315 g/m(2)/d. The paper coated with the modified biodegradable composite is promising as green-based packaging materials. (C) 2014 Elsevier Ltd. All rights reserved.
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