论文标题
可持续种植的细菌纤维素颗粒的气凝胶作为用于建造信封的热绝缘膜
Aerogel from sustainably grown bacterial cellulose pellicle as thermally insulative film for building envelope
论文作者
论文摘要
改善建筑能源性能需要开发新的高度绝缘材料。包括薄膜的负担得起的改造解决方案可以提高住宅和商业建筑中对热流的阻力，并减少整体能源消耗。在这里，我们提出的是由细菌葡萄糖杆菌汉森尼（Hansenii）作为绝缘材料产生的颗粒形成的纤维素气凝胶膜。我们研究了密度和纳米结构对气凝剂热性能的影响。测量的热电导率低至13 mW/（k*m），用于基于天然颗粒的气凝剂，其干燥的AS-IS干燥，并进行了最小的治疗。使用啤酒酿造行业的废物作为一种解决方案，以维持使用标准的Hestrin-Schramm培养基获得的纤维素产量，从而使我们的产品更实惠和可持续。将来，我们的工作可以通过进一步多样化的食物废物之间的底层来源来扩展，从而促进了更大的潜在生产和应用。
Improving building energy performance requires the development of new highly insulative materials. An affordable retrofitting solution comprising a thin film could improve the resistance to heat flow in both residential and commercial buildings and reduce overall energy consumption. Here we propose cellulose aerogel films formed from pellicles produced by the bacteria Gluconacetobacter hansenii as insulation materials. We studied the impact of density and nanostructure on the aerogels' thermal properties. Thermal conductivity as low as 13 mW/(K*m) was measured for native pellicle-based aerogels dried as-is with minimal post-treatment. The use of waste from the beer brewing industry as a solution to grow the pellicle maintained the cellulose yield obtained with standard Hestrin-Schramm medium, making our product more affordable and sustainable. In the future, our work can be extended through further diversification of the sources of substrate among food wastes, facilitating larger potential production and applications.
