Polylactide/nano and microscale silica composite films. I. Preparation and characterization
| Autor: | Yung Chang Hung, Jiann-Wen Huang, Chiun-Chia Kang, Mou-Yung Yeh, Ya-Lan Wen |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Thermogravimetric analysis
Materials science Polymers and Plastics Scanning electron microscope Colloidal silica Thermal decomposition Composite number General Chemistry Surfaces Coatings and Films Ultimate tensile strength Materials Chemistry Thermal stability Composite material Microscale chemistry |
| Zdroj: | Journal of Applied Polymer Science. 112:1688-1694 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.29616 |
| Popis: | Polylactide (PLA)/silica composite films were prepared by two methods: blending nanoscale colloidal silica sol and sol–gel. The nano and microscale silica particles, respectively, were well dispersed in PLA when observed using scanning electron microscopy and transmission electron microscope. The mechanical and thermal stability of composite films were measured before and after hydrolysis by Instron and thermogravimetric analysis. The fillers increase tensile strength, Young's modulus, thermal stability, and hydrolysis resistance with increasing silica content. The nanoscale particles exhibit better effects than the microscale ones. The activation energy, Ea, of thermal decomposition is also simulated by the Kissinger and Ozawa equation. The results also show that the thermal stability is increased by the incorporation of silica particles and is lowered by hydrolysis. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text