Synthesis, mechanical properties and enzymatic degradation of biodegradable poly(butylene carbonate-co-terephthalate)/organically modified layered double hydroxide nanocomposites
| Autor: | Jie-Mao Wang, Ming-Cheng Hsu, Tzong-Ming Wu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Condensation polymer Materials science Nanocomposite Polymers and Plastics 02 engineering and technology Transesterification Dynamic mechanical analysis Polymer 021001 nanoscience & nanotechnology chemistry.chemical_compound Crystallinity 020401 chemical engineering chemistry Chemical engineering Materials Chemistry Copolymer Hydroxide 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Journal of Polymers and the Environment. 29:755-764 |
| ISSN: | 1572-8919 1566-2543 |
| Popis: | Two new various compositions of biodegradable aliphatic-aromatic poly(butylene carbonate-co-terephthalate) (PBCT) successfully synthesized through transesterification and polycondensation process were identified using 1H-NMR spectra. A series of PBCT/stearic acid-modified layered double hydroxide (SA-LDH) nanocomposites were fabricated using solution mixing process. The morphology of PBCT/SA-LDH nanocomposites were examined using wide-angle X-ray diffraction and transmission electron microscopy. Both results revealed that the stacking layers of SA-LDH were fully exfoliated into the PBCT polymer matrix. The storage modulus at − 70 °C of PBCT/SA-LDH nanocomposites was greatly improved as compared to that of neat PBCT. The enzymatic degradation of PBCT/SA-LDH nanocomposites was examined using lipase from Pseudomonas sp. The weight loss of PBCT/SA-LDH nanocomposites increases with increasing loading of SA-LDH, recommending that the existence of SA-LDH enhances the degradation of the PBCT copolymers. This result might contribute to the lower degree of crystallinity for PBCT/SA-LDH nanocomposites. The result of MTT assay demonstrates that the PBCT/SA-LDH composites were appropriate for cell growth and might have a potential application used as biomedical materials. |
| Databáze: | OpenAIRE |
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