Preparation and Properties of Poly(Lactic Acid)/Epoxidized Natural Rubber/Nano-Silica Composites
| Autor: | Auttapol Mongkolvai, Phasawat Chaiwutthinan, Amnouy Larpkasemsuk, Anyaporn Boonmahitthisud, Saowaroj Chuayjuljit |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering 05 social sciences 02 engineering and technology 021001 nanoscience & nanotechnology Lactic acid Silica nanoparticles chemistry.chemical_compound Natural rubber chemistry Chemical engineering Mechanics of Materials visual_art 0502 economics and business Nano visual_art.visual_art_medium 050211 marketing General Materials Science 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 773:20-24 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.773.20 |
| Popis: | This study aimed to improve the toughness property of poly(lactic acid) (PLA) by incorporating epoxidized natural rubber (ENR), an elastomeric material and silica nanoparticle (nSiO2), a spherical inorganic nanofiller. ENR with 30mol% epoxidation (ENR 30) was first prepared via in situ epoxidation of natural rubber by performic acid generated from the reaction between formic acid and hydrogen peroxide in the latex stage. The PLA was melt blended with three weight percentages (10, 20 and 30wt%) of ENR in an internal mixer, followed by a compression molding. The effects of ENR loadings on the mechanical properties and thermal stability of the blends were first investigated. It was found that the addition of ENR 30 increased the toughness property of the blends. The blend at 20wt% ENR 30 exhibited the highest impact strength and elongation at break, and so was selected for preparing nanocomposites with three loadings (1, 2 and 3 parts per hundred of resins) of nano-silica (nSiO2). The results showed that all PLA/ENR 30/nSiO2 nanocomposites exhibited higher impact strength and thermal stability than the neat 80/20 PLA/ENR 30 blend. |
| Databáze: | OpenAIRE |
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