Formation of poly(propylene)-based biocomposite films and their use in the attachment of methylene blue

• Autores: Cavallo, Jesica Anabel; Gomez, Cesar Gerardo; Strumia, Miriam Cristina
• Año de publicación: 2010
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Polypropylene Based; Chitosan; Methylene Blue; Multilayers
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Biocomposite PP-g-PAAc-CS films based on PP were generated and utilized as support of methylene blue, a thiazidic dye. Using a photograft polymerization of acrylic acid, the PP film was functionalized with carboxyl groups (PP-g-PAAc), which attached chitosan by electrostatic bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. methylene blue, a thiazidic dye. Using a photograft polymerization of acrylic acid, the PP film was functionalized with carboxyl groups (PP-g-PAAc), which attached chitosan by electrostatic bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. -g-PAAc-CS films based on PP were generated and utilized as support of methylene blue, a thiazidic dye. Using a photograft polymerization of acrylic acid, the PP film was functionalized with carboxyl groups (PP-g-PAAc), which attached chitosan by electrostatic bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. -g-PAAc), which attached chitosan by electrostatic bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree. interpenetration, then decreasing with the increase in the crosslinking degree. R0d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree.
Fil: Cavallo, Jesica Anabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Gomez, Cesar Gerardo. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina
Fil: Strumia, Miriam Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina