| Journal: | Polimeros (Sao Carlos) |
| Database: | PERIÓDICA |
| System number: | 000314164 |
| ISSN: | 1678-5169 |
| Authors: | Rosa, Derval S1 Guedes, Cristina G.F Pedroso, Andrea G |
| Institutions: | 1Universidade Sao Francisco, Itatiba, Sao Paulo. Brasil |
| Year: | 2004 |
| Season: | Jul-Sep |
| Volumen: | 14 |
| Number: | 3 |
| Pages: | 181-186 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Poly(epsilon-caprolactone)/corn starch blends containing 25, 50 and 75 wt.% starch were prepared by mechanical processing and characterized by the melt flow index (MFI), tensile test and scanning electron microscopy (SEM). For comparison, starch was used in gelatinized and nongelatinized forms and was also characterized by viscography. The addition of starch to poly(epsilon-caprolactone) reduced the MFI values, the tensile strength and the elongation at break, whereas the modulus increased. The reductions in the MFI and tensile properties were most evident when gelatinized starch was used. Viscography and SEM showed that starch was well gelatinized by the gelatinization process. Blends containing nongelatinized starch showed a good dispersion of starch but poor interfacial interactions |
| Disciplines: | Química |
| Keyword: | Química de polímeros, Química orgánica, Polímeros biodegradables, Gelatinización, Mezcla de polímeros, Poli(épsilon-caprolactona), Almidón |
| Keyword: | Chemistry, Organic chemistry, Polymer chemistry, Biodegradable polymers, Gelatinization, Polymers blend, Poly(epsilon-caprolactone), Starch |
| Full text: | Texto completo (Ver HTML) |
