Bilayer biocomposites based on coated cellulose paperboard with films of polyhydroxybutyrate/cellulose nanocrystals
- 168 Downloads
In this paper, a biodegradable bilayer nanocomposite based on reinforced polyhydroxybutyrate (PHB) with cellulose nanocrystals (CNC) and cellulose paperboard was prepared. In order to obtain optimal properties two different processing methods were studied: casting and compression molding. Compression molding was selected as the most effective technique to achieve a continuous layer of PHB covering the entire surface of the paperboard. Mechanical and barrier properties of the composites were optimized, using the least amount of PHB due to its high cost compared to fossil-derived polymers. Then, the bilayer nanocomposite was produced according to the selected method and the least PHB proportion, demonstrating that PHB/CNC coating overcomes water sensibility of the cellulose paperboard and exhibited a performance enhancement without detrimental effect of the pristine PHB and paperboard properties. It was demonstrated that PHB and PHB/CNC have the potential to replace non-renewable polymers as fully bio-based materials, obtaining paperboard coatings with environmental advantages, such as non-toxicity, high recyclability and biodegradability.
KeywordsPoly(3-hydroxybutyrate) Cellulose paperboard, Cellulose nanocrystals Bilayer biocomposite
The authors acknowledge the financial support of CONICET (PIP 0527) and Universidad Nacional de Mar del Plata.
- de Carvalho KCC, Montoro SR, Cioffi MOH, Voorwald HJC (2016) Polyhydroxyalkanoates and their nanobiocomposites with cellulose nanocrystals. In: Thomas S, Shanks R, Chandrasekharakurup S (eds) Design and applications of nanostructured polymer blends and nanocomposite systems. Elsevier, Oxford, pp 261–285CrossRefGoogle Scholar
- Desobry S, Arab-Tehrany E (2014) Diffusion barrier layers for edible food packaging. In: Comprehensive materials processing. Elsevier, pp 499–518Google Scholar
- Farmer N (2013) The future: global trends and analysis for the international packaging market in relation to the speed of impact of packaging innovation and likely material changes. In: Trends in packaging of food, beverages and other fast-moving consumer goods (FMCG). Elsevier, pp 288–312Google Scholar
- Kontominas MG (2010) Packaging and the shelf life of milk. In: Robertson GL (ed) Food packaging and shelf life—a practical guide. CRC Press, Boca Raton, pp 81–102Google Scholar
- Pan P, Inoue Y (2009) Polymorphism and isomorphism in biodegradable polyesters. Prog Polym Sci 34:605–640. https://doi.org/10.1016/j.progpolymsci.2009.01.003 CrossRefGoogle Scholar
- Puglia D, Fortunati E, D’Amico DA et al (2016) Influence of processing conditions on morphological, thermal and degradative behavior of nanocomposites based on plasticized poly(3-hydroxybutyrate) and organo-modified clay. J Polym Environ 24:12–22. https://doi.org/10.1007/s10924-015-0744-5 CrossRefGoogle Scholar
- Robertson GL (2013) Paper and paper-based packaging materials. In: Food packaging principles and practice. CRC Press, pp 167–188Google Scholar