Mechanical and barrier properties of nanocrystalline cellulose reinforced chitosan based nanocomposite films.

By Avik Khan, R. Khan, S. Salmieri, C. Le Tien, B. Riedl, J. Bouchard, Grégory Chauve, V. Tan, Musa R. Kamal, M. Lacroix. Carbohydrate Polymers, 2012

627 citations recorded by the source corpus.

Nanocrystalline cellulose (NCC) reinforced chitosan-based biodegradable films were prepared by solution casting. The NCC content in the films was varied from 1 to 10% (dry wt. basis). It was found that the tensile strength (TS) of the nanocomposite films with 5% (w/w) NCC content was optimum with an improvement of 26% compared to the control chitosan films. Incorporation of NCC also significantly improved barrier properties. Water vapor permeability (WVP) of the chitosan/NCC films was decreased by 27% for the optimum 5% (w/w) NCC content. Swelling studies revealed a decrease in water uptake of the NCC-reinforced chitosan films. Analyses of thermal properties showed no significant effect of NCC whereas X-ray diffraction studies confirmed the appearance of crystalline peaks in the nanocomposite films. Surface morphology of the films was investigated by scanning electron microscopy and it was found that NCC was dispersed homogenously into chitosan matrix.

Subfields: Biomaterials

View Paper: https://www.semanticscholar.org/paper/dce06808af03021eaff5478b7ee3196b08856a6c

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Citations in the corpus

• Physical and chemical reinforcement of chitosan film using nanocrystalline cellulose and tannic acid (2015, background): “The sharp peak indicates the occurrence of hydrogen bonding between chitosan and NCC (Khan et al. 2012).”
• Preparation and characterization of nanocellulose reinforced semi-interpenetrating polymer network of chitosan hydrogel (2017, background): “Many studies have been conducted to prepare chitosan based thin films with nanocellulose as reinforcement (Azeredo et al. 2010; Dong et al. 2014; Khan et al. 2012; Velásquez-Cock et al. 2014).”
• Isolation of cellulose nanocrystals from onion skin and their utilization for the preparation of agar-based bio-nanocomposites films (2015, background): “various biopolymers such as starch, alginate, and chitosan (Chen et al. 2009; Huq et al. 2012; Mesquita et al. 2012; Khan et al. 2012).”
• Cellulose reinforced polymer composites and nanocomposites: a critical review (2013, background): “Cellulose nanocrystals (CNC) Cellulose nanocrystals (CNC), also referred to as nanocrystalline cellulose (NCC) (Khan et al. 2012; Huq et al. 2012), cellulose nanowhiskers (CNW) (Dufresne 2000) or cellulose crystallites (Revol et al. 1994), are extracted from wood or non-wood biomass by chemically…”