PBAT/organoclay composite films—part 2: effect of UV aging on permeability, mechanical properties and biodegradation
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Biodegradable alternatives are required in order to minimize the environmental impacts caused by inadequate disposal of plastics, especially fast-discharge plastics such as those used in the packaging. This work studied the permeability, mechanical properties and biodegradability of PBAT/organoclay composite films. The materials were melt-mixed in an internal laboratory mixer, and films containing 1, 3 and 5% of organoclay were prepared in a chill roll extruder. The samples were subjected to UV radiation, and their properties were evaluated before and after accelerated aging. Results show that tensile properties, gas permeability and biodegradation depend on filler content and that oxygen and carbon dioxide permeabilities were affected by UV aging. Although the mechanical properties are negatively affected by filler incorporation, oxygen and carbon dioxide permeabilities decreased and biodegradability increased in the composites, making them an interesting option for use in packaging.
KeywordsPBAT Organoclay Films Biodegradability UV aging
The authors thank the Conselho Nacional de Pesquisa (CNPq) e Coordenação de Aperfeiçoamento de Pessoal Superior (CAPES), Grant # 473622/2013-0, for financial support.
- 1.Ebnesajjad S (ed) (2013) Handbook of biopolymers and biodegradable plastics: properties, processing, and applications. Elsevier, AmsterdamGoogle Scholar
- 2.Bastioli C (ed) (2014) Handbook of biodegradable polymers, 2nd edn. Smithers Rapra Technology, ShawburyGoogle Scholar
- 3.Sisson AL, Schroeter M, Lendlein A (2011) Polyesters. In: Lendlein A, Sisson A (eds) Handbook of biodegradable polymers: isolation, synthesis, characterization and applications. Wiley, WeinheimGoogle Scholar
- 13.Mondal D, Bhowmick B, Maity D, Mollick MR, Rana D, Rangarajan V, Sen R, Chattopadhyay D (2015) Investigation on sodium benzoate release from poly(butylene adipate-co-terephthalate)/organoclay/sodium benzoate based nanocomposite film and their antimicrobial activity. J Food Sci 80:E602–E609CrossRefGoogle Scholar
- 14.Yamamoto M, Witt U, Skupin G, Beimborn D, Müller RJ (2002) Biodegradable aliphatic-aromatic polyesters: Ecoflex. In: Steinbüchel YDA (ed) Biopolymers-polyesters iii—applications and commercial products. Wiley, New York, p 299–312Google Scholar
- 15.Siegenthaler KO, Künkel A, Skupin G, Yamamoto M (2012) Ecoflex and Ecovio: biodegradable, performance-enabling plastics. Adv Polym Sci 241:91–136Google Scholar
- 19.Raja V, Natesan R, Thiyagu T (2015) Preparation and mechanical properties of poly(butylene adipate-co-terephthalate) polyvinyl alcohol/SiO2 nanocomposite films for packaging applications. J Polym Mater 32:93–101Google Scholar
- 23.Liu Q, Shaver A, Chen Y, Miller G, Paul DR, Riffle JS, McGrath JE, Freeman BD (2016) Effect of UV irradiation and physical aging on O2 and N2 transport properties of thin glassy poly(arylene ether ketone) copolymer films based on tetramethyl bisphenol A and 4,4′-difluorobenzophenone. Polymer 87:202–214CrossRefGoogle Scholar
- 28.Koller M (2014) Poly(hydroxyalkanoates) for food packaging: application and attempts towards implementation. Appl Food Biotechnol 1:3–15Google Scholar