Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities
The application of biodegradable chitosan fiber for healthy and hygienic textiles is limited due to its poor acid resistance in wet processing and poor antioxidant activity. In order to prepare chitosan fiber with good acid resistance and high antioxidant activity, chitosan fiber was first crosslink...
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doaj-bcd0e890fb9f4983896215ead0caa2452020-11-24T23:14:48ZengMDPI AGPolymers2073-43602016-04-018411910.3390/polym8040119polym8040119Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and BioactivitiesXiao-Qiong Li0Ren-Cheng Tang1College of Textile and Clothing Engineering, Soochow University, 199 Renai Road, Suzhou 215123, ChinaNational Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, 199 Renai Road, Suzhou 215123, ChinaThe application of biodegradable chitosan fiber for healthy and hygienic textiles is limited due to its poor acid resistance in wet processing and poor antioxidant activity. In order to prepare chitosan fiber with good acid resistance and high antioxidant activity, chitosan fiber was first crosslinked by a water-soluble aziridine crosslinker, and then dyed with natural lac dye consisting of polyphenolic anthraquinone compounds. The main application conditions and crosslinking mechanism of the aziridine crosslinker, the adsorption mechanism and building-up property of lac dye on the crosslinked fiber, and the effects of crosslinking and dyeing on the antioxidant and antibacterial activities of chitosan fiber were studied. The crosslinked fiber exhibited greatly reduced weight loss in acidic solution, and possessed excellent acid resistance. Lac dye displayed a very high adsorption capability on the crosslinked fiber and a high utilization rate under weakly acidic medium. The Langmuir–Nernst isotherm was the best model to describe the adsorption behavior of lac dye, and Langmuir adsorption had great contribution to total adsorption. Lac dyeing imparted good antioxidant activity to chitosan fiber. Crosslinking and dyeing had no impact on the good inherent antibacterial activity of chitosan fiber.http://www.mdpi.com/2073-4360/8/4/119chitosan fiberacid resistanceantioxidant activityantibacterial activitycrosslinkingaziridine crosslinkerlac dye |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiao-Qiong Li Ren-Cheng Tang |
spellingShingle |
Xiao-Qiong Li Ren-Cheng Tang Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities Polymers chitosan fiber acid resistance antioxidant activity antibacterial activity crosslinking aziridine crosslinker lac dye |
author_facet |
Xiao-Qiong Li Ren-Cheng Tang |
author_sort |
Xiao-Qiong Li |
title |
Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities |
title_short |
Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities |
title_full |
Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities |
title_fullStr |
Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities |
title_full_unstemmed |
Crosslinked and Dyed Chitosan Fiber Presenting Enhanced Acid Resistance and Bioactivities |
title_sort |
crosslinked and dyed chitosan fiber presenting enhanced acid resistance and bioactivities |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2016-04-01 |
description |
The application of biodegradable chitosan fiber for healthy and hygienic textiles is limited due to its poor acid resistance in wet processing and poor antioxidant activity. In order to prepare chitosan fiber with good acid resistance and high antioxidant activity, chitosan fiber was first crosslinked by a water-soluble aziridine crosslinker, and then dyed with natural lac dye consisting of polyphenolic anthraquinone compounds. The main application conditions and crosslinking mechanism of the aziridine crosslinker, the adsorption mechanism and building-up property of lac dye on the crosslinked fiber, and the effects of crosslinking and dyeing on the antioxidant and antibacterial activities of chitosan fiber were studied. The crosslinked fiber exhibited greatly reduced weight loss in acidic solution, and possessed excellent acid resistance. Lac dye displayed a very high adsorption capability on the crosslinked fiber and a high utilization rate under weakly acidic medium. The Langmuir–Nernst isotherm was the best model to describe the adsorption behavior of lac dye, and Langmuir adsorption had great contribution to total adsorption. Lac dyeing imparted good antioxidant activity to chitosan fiber. Crosslinking and dyeing had no impact on the good inherent antibacterial activity of chitosan fiber. |
topic |
chitosan fiber acid resistance antioxidant activity antibacterial activity crosslinking aziridine crosslinker lac dye |
url |
http://www.mdpi.com/2073-4360/8/4/119 |
work_keys_str_mv |
AT xiaoqiongli crosslinkedanddyedchitosanfiberpresentingenhancedacidresistanceandbioactivities AT renchengtang crosslinkedanddyedchitosanfiberpresentingenhancedacidresistanceandbioactivities |
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1725593360029188096 |