Physico-chemical, mechanical and morphological properties of biodegradable films based on arrowroot starch and poly(vinyl alcohol)
| Autor: | José Augusto de Almeida Nascimento, Douglas de Britto, Ivo Diego de Lima Silva, Amanda Félix dos Santos, Glória Maria Vinhas, Eduardo H.L. Falcão |
|---|---|
| Přispěvatelé: | JOSÉ AUGUSTO DE ALMEIDA NASCIMENTO, UFPE, AMANDA FÉLIX DOS SANTOS, UFPE, IVO DIEGO LIMA SILVA, UFPE, EDUARDO HENRIQUE LAGO FALCÃO, UFPE, DOUGLAS DE BRITTO, CPATSA, GLÓRIA MARIA VINHAS, UFPE. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Arrowroot starch Packaging films Vinyl alcohol Materials science Polymers and Plastics Starch Polymers Álcool polivinílico education technology industry and agriculture food and beverages General Chemistry Filme de embalagem Condensed Matter Physics Polysaccharide chemistry.chemical_compound chemistry Chemical engineering Amido de araruta Polysaccharides Mistura de polímeros Materials Chemistry Polissacarídeo Polymer blend |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| Popis: | Biodegradable polymeric blends have been widely studied due to their potential of reducing pollution caused by non-biodegradable materials. The research described here describes a polymer blend that benefits both from the abundance of arrowroot starch (AS) and the good mechanical properties of poly(vinyl alcohol) (PVA). Glycerol (GLY) was used in different proportions as a plasticizer. The addition of GLY improved the mechanical properties of the blends, increasing the elongation at break up to 667%. On the other hand, the GLY addition adversely affected other properties, increasing the water vapor permeability (WVP), solubility and hydrophilic characteristics and reducing the thermal stability and the crystallinity index. The AS/PVA blend without GLY addition showed better physical-chemical properties, having strong chemical interaction between the two kinds of polymeric chains (according FTIR analysis) and a homogeneous morphology (SEM morphological analysis). In general, decreasing the AS content improved the mechanical and WVP properties, the film becoming less hydrophilic. In conclusion, the AS/PVA blends cast films, with or without GLY, are biodegradable materials suitable for packaging applications. Made available in DSpace on 2022-10-11T14:17:33Z (GMT). No. of bitstreams: 1 Physico-Chemical-Mechanical-and-Morphological-2021.pdf: 4518671 bytes, checksum: 3c8dc3a260eaafedca015e6d54d34485 (MD5) Previous issue date: 2021 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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