Biodegradation Behavior of Cellulose Acetate with DS 2.5 in Simulated Soil
The relationship between biodegradation and mechanical behavior is fundamental for studies of the application of cellulose acetate films as a possible material for biodegradable packaging. In this work, the biodegradation of cellulose acetate (CA) with DS 2.5 was analyzed in simulated soil. CA films were prepared by casting and buried in the simulated soil. Samples were taken monthly and analyzed, the total time of biodegradation was 6 months. To characterize the biodegradable CA, the DMA technique was employed. The main result showed that the time of exposure to the simulated soil affects the mechanical properties of the films and the values of crystallinity. By DMA analysis, it was possible to conclude that as the CA is biodegraded, its mechanical properties were altered, for example, storage modulus has increased with biodegradation and the modulus of loss has decreased. Analyzes of DSC, XRD, and FTIR were also carried out to characterize the biodegradation of CA, which corroborated with the results of DMA. The observation of the carbonyl band by FTIR and crystalline indices obtained by XRD were important to evaluate the degradation of CA during the exposure time.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1340536Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 677
 H. O. Ghareeb et al, “Molar mass characterization of cellulose acetates over a wide range of high DS by size exclusion chromatography with multi-angle laser light scattering detection” in Carbohydrate Polymers, 2012, v. 88, n. 1, p. 96–102.
 C.C Lin; K. S. Anseth. “The Biodegradation of Biodegradable Polymeric Biomaterials. In: LEMONS, B. D. R. S. H. J. S. E. “in Biomaterials Science (Third Edition). (S. l.): Academic Press, 2013. p. 716–728.
 R. L. Crawford, “Biodegradation: Principles, Scope, and Technologies. In: MOO-YOUNG, M. (Org.)” in Comprehensive Biotechnology (Second Edition). Burlington: Academic Press, 2011. p. 3–13.
 S. S. Brum; et al, “Synthesis of cellulose acetate from the bean straw using N-bromosuccinimide (NBS) as catalyst” in Polímeros, 2012, v. 22, n. 5, p. 447–452.
 A. M. Senna; K. M. Novack; V. R. Botaro, “Synthesis and characterization of hydrogels from cellulose acetate by esterification crosslinking with EDTA dianhydride” in Carbohydrate Polymers, 2014, v. 114, p. 260–268.
 S. M. M. Franchetti; J. C.Marconato, “Biodegradable polymers - a partial way for decreasing the amount of plastic waste” in Química Nova, 2006, v. 29, n. 4, p. 811–816.
 M. A. G. Bardi; D. S. Rosa, “Avaliação da Biodegradação em Solo Simulado De Poli (Caprolactona), Acetato De Celulose E Suas Blendas” in Revista Brasileira de Aplicações de Vácuo, 2007, v. 26, n. 1, pp. 43–47.
 C. Florencio, “Microrganismos Produtores de celulases: seleção de isolamento de Trichoderma spp. ” São Carlos, 83, 2007.
 K. Karimi; M. J. Taherzadeh, “A critical review of analytical methods in pretreatment of lignocelluloses: Composition, imaging, and crystallinity” in Bioresource Technology, 2016, 200, pp. 1008-1018.
 Cerqueira, D. A. et al. 1H-NMR characterization of cellulose acetate obtained from sugarcane bagasse. Polímeros, v. 20, n. 2, p. 85–91, jun. 2010.
 Wan Daud, W. R.; Djuned, F. M. Cellulose acetate from oil palm empty fruit bunch via a one step heterogeneous acetylation. Carbohydrate Polymers, v. 132, p. 252–260, 5 nov. 2015.
 G. J. M. Fechine, “Biodegradable polymers - a partial way for decreasing the amount of plastic waste” in Química Nova, v. 29, n. 4, 2006, pp. 811–816.
 R. R. M. de Freitas; A. M. Senna; V. R. Botaro, “Influence of degree of substitution on thermal dynamic mechanical andphysicochemical properties of cellulose acetate” in Industrial Crops & Products, 2017, 109, pp 452– 458.
 R. M. Silverstein; G. C. Bassler; T.C.Morril, “Carboxylic acid and amines” in Spectrom. Identif. Org. Comp, 2005, 7, 96–102.