Studies on the effects of the enzymatic treatment on silk fine powder
| Autor: | Weilin Xu, Guizhen Ke, Xuqiang Peng |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Polymers and Plastics fungi macromolecular substances General Chemistry equipment and supplies Sericin Surfaces Coatings and Films Crystallinity SILK Chemical engineering Particle-size distribution Polymer chemistry Materials Chemistry Particle size Microparticle Natural fiber Steam explosion |
| Zdroj: | Journal of Applied Polymer Science. 101:2967-2971 |
| ISSN: | 1097-4628 0021-8995 |
| Popis: | In this study, the silk treated by steam explosion was pulverized into fine powder with a mean particle size of 1.829 μm, then the feasibility of the application of the protease treatment to produce finer and more uniform silk powder was investigated. The results indicated that after the enzymatic treatment, the mean diameter of the silk powder was reduced from 1.829 to 1.546 μm and the equivalent diameter distribution became more concentrated; thus, the uniformity of the particles was improved. The infrared spectra analysis demonstrated that the silk powder remained the β-sheet crystalline structure. X-ray diffraction analysis showed the crystallinity of the polished silk powder was very slightly strengthened. It was found that the treatment reduced some polar amino acid in the sericin; however, the composition of the kinds of the amino acids did not change. In addition, the hot water-solubility and moisture regain of the polished silk powder declined very slightly. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2967–2971, 2006 |
| Databáze: | OpenAIRE |
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