O-ATRP synthesized poly(beta-pinene) blended with chitosan for antimicrobial and antioxidant bio-based films production

Autor(es)

Rodrigues, Plinio Ribeiro ^[1] ; Marangoni Junior, Luis ^[2] ; de Souza, Weysser Felipe Candido ^[3] ; Sato, Helia Harumi ^[3] ; Alves, Rosa Maria Vercelino ^[2] ; Vieira, Ronierik Pioli ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Chem Engn, Dept Bioproc & Mat Engn, 13083-852 Albert Einstein St 500, BR-13083852 Campinas, SP - Brazil

^[2] Packaging Technol Ctr, Inst Food Technol, Brasil Ave 2880, BR-13070178 Campinas, SP - Brazil

^[3] Univ Estadual Campinas, Sch Food Engn, Dept Food Sci & Nutr, Monteiro Lobato St 80, BR-13083862 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Biological Macromolecules; v. 193, n. A, p. 425-432, DEC 15 2021.
• Citações Web of Science: 1

Resumo

Antioxidant and antimicrobial activities are important characteristics of active film packaging designed to extend food preservation. In this study, functional bio-based films were produced using different concentrations of antioxidant poly(beta-pinene) bio-oligomer synthesized via organocatalyzed atom transfer radical polymerization (O-ATRP) and blended with chitosan of different molecular weights. The structural, mechanical, thermal, solubility, antioxidant, and antimicrobial properties of the films were investigated. The poly(beta-pinene)-chitosan blends presented significant pores and irregularities with the increase of poly(beta-pinene) concentration over 30%. Chitosan molecular weight did not show any important influence in the physical properties of the blends. Poly (beta-pinene) load decreased the materials' tensile strength and melting temperature, exhibiting a plasticizing effect on chitosan chains. The antioxidant and antimicrobial activities of the films were improved by poly(beta-pinene) incorporation and mainly depended on its concentration. Therefore, the incorporation of poly(beta-pinene) in chitosan films can be an alternative for active packaging production. (AU)

• Processo FAPESP: 18/02508-5 - Síntese de poli(limoneno) via O-ATRP: uma proposta de aumento da massa molar e ausência de resíduos metálicos na produção de um polímero de fonte renovável
• Beneficiário: Roniérik Pioli Vieira
• Modalidade de apoio: Auxílio à Pesquisa - Regular