+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Bio-nanocomposite films reinforced with cellulose nanocrystals: Rheology of film-forming solutions, transparency, water vapor barrier and tensile properties of films



Bio-nanocomposite films reinforced with cellulose nanocrystals: Rheology of film-forming solutions, transparency, water vapor barrier and tensile properties of films



Carbohydrate Polymers 129: 156-167



This study was aimed to develop bio-nanocomposite films of carboxymethyl cellulose (CMC)/starch (ST) polysaccharide matrix reinforced with cellulose nanocrystals (CNC) using the solution casting method. The CNC were extracted at the nanometric scale from sugarcane bagasse via sulfuric acid hydrolysis and used as reinforcing phase to produce CMC/ST-CNC bio-nanocomposite films at different CNC loading levels (0.5-5.0 wt%). Steady shear viscosity and dynamic viscoelastic measurements of film-forming solution (FFS) of neat CMC, CMC/ST blend and CMC/ST-CNC bio-nanocomposites were evaluated. Viscosity measurements revealed that a transition from Newtonian behavior to shear thinning occurred when CNC were added. The dynamic tests confirmed that all FFS have a viscoelastic behavior with an entanglement network structure, induced by the hydrogen bonding. In regard to the cast film quality, the rheological data showed that all FFS were suitable for casting of films at ambient temperature. The effect of CNC addition on the optical transparency, water vapor permeability (WVP) and tensile properties of bio-nanocomposite films was studied. It was found that bio-nanocomposite films remain transparent due to CNC dispersion at the nanoscale. The WVP was significantly reduced and the elastic modulus and tensile strength were increased gradually with the addition of CNC. Herein, the steps to form new eco-friendly bio-nanocomposite films were described by taking advantage of the combination of CMC, ST and CNC. The as-produced films exhibited good optical transparency, reduced WVP and enhanced tensile properties, which are the main properties required for packaging applications.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 057300029

Download citation: RISBibTeXText

PMID: 26050901

DOI: 10.1016/j.carbpol.2015.04.051


Related references

Water barrier properties of starch films reinforced with cellulose nanocrystals obtained from sugarcane bagasse. Carbohydrate Polymers 110: 53-61, 2014

Improved mechanical properties of k-carrageenan-based nanocomposite films reinforced with cellulose nanocrystals. International Journal of Biological Macromolecules 123: 1248-1256, 2019

Mechanical and barrier properties of nanocrystalline cellulose reinforced chitosan based nanocomposite films. Carbohydrate Polymers 90(4): 1601-1608, 2012

Structural properties of films and rheology of film-forming solutions of chitosan gallate for food packaging. Carbohydrate Polymers 146: 10-19, 2016

PLA/Halloysite Nanocomposite Films Water Vapor Barrier Properties and Specific Key Characteristics. Macromolecular Materials and Engineering, 2013

Tunable d-Limonene Permeability in Starch-Based Nanocomposite Films Reinforced by Cellulose Nanocrystals. Journal of Agricultural and Food Chemistry 66(4): 979-987, 2018

Incorporation of zinc oxide nanoparticles improved the mechanical, water vapor barrier, UV-light barrier, and antibacterial properties of PLA-based nanocomposite films. Materials Science and Engineering. C Materials for Biological Applications 93: 289-298, 2018

Development of polylactic acid nanocomposite films reinforced with cellulose nanocrystals derived from coffee silverskin. Carbohydrate Polymers 169: 495-503, 2017

Tensile and water barrier properties of cassava starch composite films reinforced by synthetic zeolite and beidellite. Journal of Food Engineering 115(3): 339-346, 2013

Development of polyvinyl alcohol/chitosan bio-nanocomposite films reinforced with cellulose nanocrystals isolated from rice straw. Applied Surface Science 449: 591-602, 2018

Tunicate cellulose nanocrystals: preparation, neat films and nanocomposite films with glucomannans. Carbohydrate Polymers 117: 286-296, 2015

Cellulose-glycerol-polyvinyl alcohol composite films for food packaging: Evaluation of water adsorption, mechanical properties, light-barrier properties and transparency. Carbohydrate Polymers 195: 432-443, 2018

Effect of cellulose fibers addition on the mechanical properties and water vapor barrier of starch based films. 2008

Effect of polyethyleneimine modified graphene on the mechanical and water vapor barrier properties of methyl cellulose composite films. Carbohydrate Polymers 182: 52-60, 2018

Preparation and properties of cellulose nanocrystals reinforced collagen composite films. Journal of Biomedical Materials Research. Part a 102(4): 1131-1139, 2014