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Effect of storage time and temperature on dissolved state of cellulose in TBAH-based solvents and mechanical property of regenerated films
Reviews on Advanced Materials Science ( IF 3.6 ) Pub Date : 2021-01-01 , DOI: 10.1515/rams-2021-0034
Wei Li 1 , Ling Tan 1 , Qiandan Fan 1 , Wei Wei 1 , Zuowan Zhou 1
Affiliation  

Storage of cellulose solution can be practically ineluctable before it is manufactured into various regenerated products (e.g., fibers, films), especially in the case of industrial production. Therefore, it is necessary to evaluate the effect of storage time and temperature on the dissolved state of cellulose in the interested TBAH-based solvents (including TBAH/H 2 O, TBAH/H 2 O/DMSO, TBAH/H 2 O/Urea), as well as on the mechanical property of the relevant regenerated products (films were prepared in this work for the evaluation). The dissolved state of cellulose in these solvents along with storage has been analyzed with the polarized light microscope photographs and Stormer viscosity. Focus on the interested TBAH/H 2 O/DMSO solvent, the effect of storage time and temperature on the solution viscosity, and degree of polymerization of cellulose have been discussed. Critical storage time for different storing temperature has been determined, after where significant cellulose degradation happens. A series of regenerated cellulose films with storage time ranging from 0 to 200 h have been prepared. The optimal storage time and strengthening mechanism for cellulose films regenerated from the solution of cellulose/TBAH/H 2 O/DMSO have been discussed. This work can provide reference about storage time and temperature of cellulose/TBAH/H 2 O/DMSO, especially for the production of pilot-scale, etc.

中文翻译:

储存时间和温度对纤维素在TBAH基溶剂中溶解状态和再生膜力学性能的影响

在将纤维素溶液制造成各种再生产品(例如,纤维、薄膜)之前,纤维素溶液的储存实际上是不可避免的,尤其是在工业生产的情况下。因此,有必要评估储存时间和温度对纤维素在感兴趣的基于TBAH的溶剂(包括TBAH/H 2 O、TBAH/H 2 O/DMSO、TBAH/H 2 O/Urea)中溶解状态的影响。 ),以及相关再生产品的机械性能(在这项工作中制备了用于评估的薄膜)。已使用偏光显微镜照片和斯托默粘度分析了纤维素在这些溶剂中的溶解状态以及储存情况。重点关注感兴趣的TBAH/H 2 O/DMSO溶剂,保存时间和温度对溶液粘度的影响,和纤维素的聚合度已经讨论过。不同储存温度下的临界储存时间已经确定,在发生显着纤维素降解之后。已经制备了一系列存储时间为 0 到 200 小时的再生纤维素薄膜。讨论了由纤维素/TBAH/H 2 O/DMSO 溶液再生的纤维素薄膜的最佳储存时间和强化机制。该工作可为纤维素/TBAH/H 2 O/DMSO的储存时间和温度提供参考,特别是为中试生产等提供参考。讨论了由纤维素/TBAH/H 2 O/DMSO 溶液再生的纤维素薄膜的最佳储存时间和强化机制。该工作可为纤维素/TBAH/H 2 O/DMSO的储存时间和温度提供参考,特别是为中试生产等提供参考。讨论了由纤维素/TBAH/H 2 O/DMSO 溶液再生的纤维素薄膜的最佳储存时间和强化机制。该工作可为纤维素/TBAH/H 2 O/DMSO的储存时间和温度提供参考,特别是为中试生产等提供参考。
更新日期:2021-01-01
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