PLA and Montmorilonite Nanocomposites: Properties, Biodegradation and Potential Toxicity

Autor(es)

Sinohara Souza, Patricia Moraes ^[1] ; Morales, Ana Rita ^[1] ; Marin-Morales, Maria Aparecida ^[2] ; Innocentini Mei, Lucia Helena ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Chem Engn, Dept Mat Engn & Bioproc, Campinas, SP - Brazil

^[2] Sao Paulo State Univ, Inst Biosci, Dept Biol, BR-13083852 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF POLYMERS AND THE ENVIRONMENT; v. 21, n. 3, p. 738-759, SEP 2013.
• Citações Web of Science: 22

Resumo

The concern related to solid waste increases efforts to develop products based on biodegradable materials. At present, PLA has one of the highest potentials among biopolyesters, particularly for packaging. However, its application is limited in some fields. In order to optimize PLA properties, organo-modified montmorilonites have been extensively used to obtain nanocomposites. Although PLA nanocomposites studies are widely reported in the literature, there is still few information about the influence of organoclays on de biodegradation process, which is a relevant information, since one of the main purposals related to the final disposal of biopolymers as PLA is composting. Besides, in the last years some research has been conducted in order to evaluate the potential toxicity of montmorilonite, unmodified or organo-modified. Since the use of montmorilonite is expanding in different applications, human exposure and risk assessment are important issues to be investigated. In this context, this review intends to compile available information related to common organoclays used for PLA nanocomposites, its properties, biodegradation analysis and potential toxicity evaluation of nanocomposites, focused on montmorilonite as filler. Two issues of relevance were pointed out. The first is food safety and quality, and the second consideration is the environmental effect. (AU)

• Processo FAPESP: 12/00227-2 - Estudo de nanocompósitos de PLA/argilas organofílicas: caracterização, biodegradação e efeitos genotóxicos e mutagênicos
• Beneficiário: Ana Rita Morales
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/14250-3 - Estudo da influência de argilas organofílicas no processo de biodegradação de nanocompósitos de PLA e seus efeitos genotóxicos e mutagênicos.
• Beneficiário: Patrícia Moraes Sinohara Souza
• Modalidade de apoio: Bolsas no Brasil - Mestrado