The facile and controllable synthesis of a bacterial cellulose/polyhydroxybutyrate composite by co-culturing Gluconacetobacter xylinus and Ralstonia eutropha
| Autor: | Shengjun Hu, Shan Jiang, Qiang Hu, Mengying Xu, Ran Ding, Tian Zhang, Pier-Luc Tremblay, Kai Xu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Polymers and Plastics
Polyesters Composite number Gluconacetobacter xylinus Hydroxybutyrates 02 engineering and technology 010402 general chemistry 01 natural sciences Polyhydroxybutyrate chemistry.chemical_compound Industrial Microbiology Adsorption Ralstonia Materials Chemistry Eutropha Cellulose chemistry.chemical_classification biology Organic Chemistry Polymer 021001 nanoscience & nanotechnology biology.organism_classification Coculture Techniques 0104 chemical sciences chemistry Chemical engineering Bacterial cellulose Biofuels Cupriavidus necator 0210 nano-technology |
| Zdroj: | Carbohydrate polymers. 252 |
| ISSN: | 1879-1344 |
| Popis: | Bacterial cellulose (BC) and polyhydroxybutyrate (PHB) are microbial polymers considered to be promising biodegradable alternatives to fossil fuel derivatives. BC and PHB can be combined into a composite with enhanced mechanical properties. The synthesis processes of BC/PHB composites described until now are complicated with multiple steps. Here, BC/PHB composites were synthesized by a facile Gluconacetobacter xylinus and Ralstonia eutropha co-culture method generating BC and PHB simultaneously in situ. This co-culture approach ensured a certain level of control over the synthesis process. By simply varying the R. eutropha inoculum, the weight ratio of PHB into BC/PHB was adjusted from 15.62 to 42.88 %. The fabricated composites were networks of BC fibers connecting PHB particles. BC/PHBs were characterized by thermal and mechanical analyses and exhibited a 2.6 times higher capacity for toxic copper adsorption than pure BC. The co-culture technique described here is a simple synthesis method to obtain BC/PHB with adjustable characteristics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect