دورية أكاديمية
A Study of the Physical and Mechanical Properties of Aerogels Obtained from Bacterial Cellulose.
| العنوان: | A Study of the Physical and Mechanical Properties of Aerogels Obtained from Bacterial Cellulose. |
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| المؤلفون: | Revin VV; National Research Ogarev Mordovia State University , Saransk 430005 , Russia., Pestov NA; National Research Ogarev Mordovia State University , Saransk 430005 , Russia., Shchankin MV; National Research Ogarev Mordovia State University , Saransk 430005 , Russia., Mishkin VP; National Research Ogarev Mordovia State University , Saransk 430005 , Russia., Platonov VI; Samara National Research University , Samara 443086 , Russia., Uglanov DA; Samara National Research University , Samara 443086 , Russia. |
| المصدر: | Biomacromolecules [Biomacromolecules] 2019 Mar 11; Vol. 20 (3), pp. 1401-1411. Date of Electronic Publication: 2019 Feb 26. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 100892849 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1526-4602 (Electronic) Linking ISSN: 15257797 NLM ISO Abbreviation: Biomacromolecules Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : American Chemical Society, c2000- |
| مواضيع طبية MeSH: | Bacteria/*chemistry , Cellulose/*chemistry , Gels/*chemistry, Materials Testing ; Microscopy, Electron, Scanning ; Spectrophotometry, Infrared ; Temperature |
| مستخلص: | Aerogels with a density of 4.2-22.8 kg/m 3 were obtained from bacterial cellulose synthesized under static and dynamic cultivation conditions on a molasses medium. The strength properties and porous structure of the aerogels strongly depended on their density. With an aerogel density of 22.8 kg/m 3 , the modulus of elasticity at 80% compression of the sample was 0.1 MPa. The decrease in the density of aerogels led to an increase in the pore sizes ranging from 20 to 1000 μm and a decrease in the modulus of elasticity. These characteristics were more pronounced in aerogels obtained from bacterial cellulose under static cultivation conditions. The aerogels had a low coefficient of thermal conductivity (0.0257 W m -1 °C -1 ), which is comparable to the thermal conductivity of air, and moderate thermal stability because the degradation processes of the aerogels began at 237 °C. The aerogels obtained from bacterial cellulose had high sound absorption coefficients in the frequency range of 200-5000 Hz, which makes it possible to use the aerogels as heat- and sound-insulating materials. |
| المشرفين على المادة: | 0 (Gels) 9004-34-6 (Cellulose) |
| تواريخ الأحداث: | Date Created: 20190216 Date Completed: 20200527 Latest Revision: 20200527 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1021/acs.biomac.8b01816 |
| PMID: | 30768255 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1526-4602 |
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| DOI: | 10.1021/acs.biomac.8b01816 |