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High-efficiency and recyclability of ramie degumming catalyzed by FeCl3 in organic solvent.
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2020-04-06 , DOI: 10.1016/j.carbpol.2020.116250 Yongshuai Qu 1 , Zhihui Qin 1 , Ruiyun Zhang 2 , Dequn Wu 2 , Feng Ji 1 , Zhaohe Shi 1 , Shuyuan Zhao 1 , Liu Liu 3 , Jianyong Yu 3
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2020-04-06 , DOI: 10.1016/j.carbpol.2020.116250 Yongshuai Qu 1 , Zhihui Qin 1 , Ruiyun Zhang 2 , Dequn Wu 2 , Feng Ji 1 , Zhaohe Shi 1 , Shuyuan Zhao 1 , Liu Liu 3 , Jianyong Yu 3
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Although traditional alkaline (TAL) process for ramie degumming is commonly used in the industry, it causes severe environmental concerns. In this work, an emerging organic solvent degumming process utilizing FeCl3 catalyst (FeCl3-OS) was developed in one step. The influences of FeCl3-OS system on fiber properties (e.g. residual gum content, tenacity, degree of polymerization (DP), etc.) were evaluated, and the recyclability of degumming solution was also studied. The results indicated that ramie fiber could be isolated with FeCl3-OS treatment (FeCl3 1.0 %, 200 ℃, 121 min), and the tenacity and residual gum content of refined fibers were 7.9 cN/dtex and 3.88 %, respectively. Fibers treated in FeCl3-OS system were endowed better moisture sorption (9.2 %) and higher yield (75.2 %) compared with that in TAL system. Moreover, fibers with five cycles' treatment possessed outstanding performances, that was 4.44 cN/dtex of tenacity and 4.33 % of residual gum content, which fulfilled the requirements of the spinning process.
中文翻译：
FeCl3在有机溶剂中催化的of麻脱胶具有很高的效率和可回收性。
尽管工业上通常使用传统的碱（TAL）工艺进行麻脱胶，但会引起严重的环境问题。在这项工作中，一步开发了一种新兴的利用FeCl3催化剂（FeCl3-OS）的有机溶剂脱胶工艺。评估了FeCl3-OS体系对纤维性能的影响（例如，残留胶的含量，韧度，聚合度（DP）等），还研究了脱胶溶液的可回收性。结果表明，用FeCl3-OS处理（FeCl3 1.0％，200℃，121 min）可以分离出ie麻纤维，精制纤维的韧度和残余胶含量分别为7.9 cN / dtex和3.88％。与TAL系统相比，在FeCl3-OS系统中处理的纤维具有更好的吸湿性（9.2％）和更高的产率（75.2％）。此外，
更新日期：2020-04-06
中文翻译：
FeCl3在有机溶剂中催化的of麻脱胶具有很高的效率和可回收性。
尽管工业上通常使用传统的碱（TAL）工艺进行麻脱胶，但会引起严重的环境问题。在这项工作中，一步开发了一种新兴的利用FeCl3催化剂（FeCl3-OS）的有机溶剂脱胶工艺。评估了FeCl3-OS体系对纤维性能的影响（例如，残留胶的含量，韧度，聚合度（DP）等），还研究了脱胶溶液的可回收性。结果表明，用FeCl3-OS处理（FeCl3 1.0％，200℃，121 min）可以分离出ie麻纤维，精制纤维的韧度和残余胶含量分别为7.9 cN / dtex和3.88％。与TAL系统相比，在FeCl3-OS系统中处理的纤维具有更好的吸湿性（9.2％）和更高的产率（75.2％）。此外，
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