Mura, Stefania and Corrias, Francesco and Stara, Giuseppe and Piccinini, Massimo and Secchi, Nicola and Marongiu, Daniela and Innocenzi, Plinio and Irudayaraj, Joseph and Greppi, Gianfranco (2011) Innovative composite films of chitosan, methylcellulose, and nanoparticles. Journal of Food Science, Vol. 76 (7), N54-N60. eISSN 1750-3841. Article.
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Plastic is readily available and inexpensive, so it is becoming the main material for packaging. Unfortunately plastics do not biodegrade and, if reduced in small pieces, contaminate soil and waterways. In the present work, natural films composed of chitosan, methylcellulose, and silica (SiO2) nanoparticles (NPs) were developed as new packaging materials. The effect of the incorporation of NPs into the polymeric film matrix was evaluated. An excellent improvement of the mechanical properties was obtained for nanostructured films with a composition of CH:MC 50:50 and NPs 1% w/v that make these materials able to replace plastics and derivatives, reducing environmental pollution.
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