Grown Ultrathin Bacterial Cellulose Mats for Optical Applications
| Autor: | Shekar Mekala, Fei Liu, Richard A. Gross, Michael McMaster, Kenneth D. Singer |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Silicon
Materials science Morphology (linguistics) Polymers and Plastics Surface Properties Cell Culture Techniques chemistry.chemical_element Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound Crystallinity Materials Chemistry Transmittance Composite material Cellulose Gluconacetobacter xylinus Fiber morphology 021001 nanoscience & nanotechnology Reflectivity 0104 chemical sciences chemistry Bacterial cellulose 0210 nano-technology Hydrophobic and Hydrophilic Interactions |
| Zdroj: | Biomacromolecules. 19:4576-4584 |
| ISSN: | 1526-4602 1525-7797 |
| DOI: | 10.1021/acs.biomac.8b01269 |
| Popis: | A facile and effective method is described for the biosynthesis of ultrathin bacterial cellulose (BC) mats, which are green, inexpensive, lightweight, and flexible. Physical properties studied include thickness, morphology, reflectance, transmittance, and crystallinity index. BC mat thickness was varied by controlling the depth of the culture broth so that films with predictable thickness, between 113 and 1114 nm, were produced. These BC films have similar fiber morphology to corresponding mm thick BC films prepared under static culture conditions. To increase BC film hydrophobicity, surface trihexylsilylated BC (THSBC) mats with DSavg 0.015 were prepared. Both native and THSBC mats were investigated as antireflection coatings for silicon substrates. The 328 ± 42 nm thick BC mat demonstrated broadband, interference type antireflection over a spectral range of 500–1800 nm. Different reflection properties obtained as a function of BC film orientation reveals that engineered density gradients can be used to ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|