Study of optimization of the synthesis and properties of biocomposite films based on grafted chitosan
Acrylic acid (AcAc) and 2-hydroxyethyl methacrylate (HEMA) were graft copolymerized onto the chito- san backbone using radical initiation under different experimental conditions. The grafted products were then characterized by FTIR, TGA, grafting and swelling index (%G and Q, respectively), Mechanic...
| Autores: | , , , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2012 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/24693 |
| Acesso em linha: | http://hdl.handle.net/11336/24693 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Biocomposite Films Chitosan https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Resumo: | Acrylic acid (AcAc) and 2-hydroxyethyl methacrylate (HEMA) were graft copolymerized onto the chito- san backbone using radical initiation under different experimental conditions. The grafted products were then characterized by FTIR, TGA, grafting and swelling index (%G and Q, respectively), Mechanical prop- erties and biodegradability were determined. The study of the properties of the grafted films demon- strated a marked influence of the concentration of acrylic monomers, time and temperature on the %G. In addition, both grafted films (CH-g-HEMA and CH-g-AcAc) showed a noticeable difference in their mechanical behavior. CH-g-HEMA stands the highest deformation for longer periods in relation to smaller strain values, whereas CH-g-AcAc shows better tension strain but lower deformation. Therefore, CH-g- HEMA films have a vast potential for food biodegradable covering characterized by their mechanical properties, non-toxicity and biodegradability. |
|---|