ABSTRACT

Bacterial cellulose is one of the high potential sustainable materials with numerous applications. This research work analyses the moisture handling ability of the alkali-treated (purified), bleached and dyed bacterial cellulose after glycerol treatment focusing on fashion application. The developed samples are dried at room temperature and evaluated for water absorbency, wicking, water vapor transmission properties, and moisture management indices. Glycerol treated bacterial cellulose nonwovens showed a better absorbency than the dried non-woven. A faster absorbency of 1.48 minutes was noted for the glycerol treated bleached sample. In the case of wicking, bleached and dyed dry samples showed minimum wicking of 5 and 8 mm. No other samples showed wicking ability including the glycerol treated samples. The water vapor permeability results also increased notably after glycerol treatment. An increment of 55% water vapor permeability was noted with purified sample and a 36.9% increment with bleached sample after glycerol treatment. Though the glycerol treated dyed sample showed a similar vapor transmission to the glycerol treated bleached sample, the untreated dyed sample had a maximum vapor permeability of 621.10 g/m²/day. The moisture management analysis results indicated that the glycerol treatment improved the waterproof nature of bacterial cellulose nonwoven to fast-absorbing slow drying fabric. The subjective analysis on the nonwoven fabric handle showed that the glycerol treatment statistically increased the smoothness, softness, flexibility, and draping nature of the sample than the dried sample. However, the subjective analysis also reported that the glycerol treatment significantly increased the stickiness of the nonwoven.

摘要

细菌纤维素是具有多种应用的高潜力可持续材料之一。这项研究工作分析了碱处理（纯化）、漂白和染色细菌纤维素在甘油处理后的水分处理能力，重点是时尚应用。开发的样品在室温下干燥并评估吸水率、芯吸、水蒸气传输特性和水分管理指数。甘油处理的细菌纤维素非织造布比干燥的非织造布表现出更好的吸收性。注意到甘油处理的漂白样品的吸收速度更快，为 1.48 分钟。在芯吸的情况下，漂白和染色的干样品显示出 5 和 8 毫米的最小芯吸。没有其他样品显示芯吸能力，包括甘油处理的样品。甘油处理后水蒸气渗透率结果也显着增加。甘油处理后，纯化样品的水蒸气渗透率增加了 55%，漂白样品增加了 36.9%。尽管甘油处理的染色样品显示出与甘油处理的漂白样品相似的蒸汽透过率，但未处理的染色样品的最大蒸汽渗透率为 621.10 g/m² /天。水分管理分析结果表明，甘油处理提高了细菌纤维素非织造布的防水性能，使其成为快吸慢干织物。对非织造织物手感的主观分析表明，与干燥的样品相比，甘油处理在统计学上提高了样品的光滑度、柔软度、柔韧性和悬垂性。然而，主观分析还报告说，甘油处理显着增加了非织造布的粘性。