Preparation, characterization and biodegradation of blend films of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with natural biopolymers
| Autor: | Al-Ashraf Abdullah Amirul, Nor Azura Azami, Wan Nur Syahirah, Kai-Hee Huong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics biology Starch Ideonella food and beverages 02 engineering and technology General Chemistry Polymer Biodegradation 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics biology.organism_classification 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Cupriavidus Materials Chemistry Cellulose Alcaligenes Solubility 0210 nano-technology |
| Zdroj: | Polymer Bulletin. 78:3973-3993 |
| ISSN: | 1436-2449 0170-0839 |
| Popis: | Blending of biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) P(3HB-co-3HV) with natural polymer is one of alternative routes to improve the mechanical properties and reduce the cost of raw materials. Such blending is interesting to be implemented in packaging industry due to the low-cost materials, sustainable and eco-friendly. Therefore, in this study, P(3HB-co-6%3HV) copolymers synthesized by Cupriavidus malaysiensis USMAA2-4 were blended with different ratios of starch, cellulose or alginate through solvent casting technique. Hydrophilicity analysis revealed the density, water-absorption capacity and solubility of blend films increased proportionally with the increasing ratio of natural polymers. The degradation of the blend films was investigated in soil and lake. The highest percentage of degradation in the soil and lake were observed on the blend films containing starch and alginate, respectively. Meanwhile, blending of P(3HB-co-6%3HV) with cellulose has shown the lowest percentage of degradation on both locations. The blend films with 50:50 wt:wt% ratio of P(3HB-co-6%3HV): natural polymer from both locations was used for isolation of microbial degraders of poly(3-hydroxybutyrate) P(3HB), starch, cellulose or alginate. The PHAs degraders were identified from genus Cupriavidus, Acidovorax, Variovora, Streptomyces and Ideonella and two starch degraders were identified from genus Moraxella and Alcaligenes. |
| Databáze: | OpenAIRE |
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