期刊
JOURNAL OF CLEANER PRODUCTION
卷 277, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2020.123278
关键词
Nanoparticles; Chrome-less; High exhaustion; Leather; Clean tanning
资金
- Chengdu Science and Technology Bureau [2019-GH02-00001-HZ]
- opening project of Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University [20826041C4159]
- opening project of laboratory and equipment management, Sichuan University [SCU 203031]
Currently, chromium-containing wastewater from tanning process has seriously restricted the sustainable development of the leather industry. This problem can be solved by high-exhaustion chrome tanning technology and chrome-less tanning technology. However, these techniques not only fail to achieve a uniform tanning effect but also reduce the performance of the leather. In this work, pH-sensitive and chromium (III)-loaded nanoparticles were fabricated by self-assembly of poly [poly (ethylene glycol) methyl ether acrylate-co-acrylic acid-co-glycidyl methacrylate (PEGMA-co-AA-co-GMA)] terpolymers templated Cr(OH)(3) mineralization, which were defined as Cr-PPAG NPs and utilized as smart high chrome exhaustion and chrome-less tanning agents. Due to the core-shell structure, these Cr-PPAG NPs exhibit a 'Trojan horses' behavior which can protect Cr3+ from reacting with skin collagen during the penetration process, leading to effective and uniform delivery of Cr3+ to the rawhide's interior. Then, the released Cr3+ from Cr-PPAG NPs could cross-link the carboxyl groups both on the skin collagen and poly (PEGMA-co-AA-co-GMA), thereby producing the high-exhaustion chrome tanning effect. Furthermore, the GMA moieties of poly (PEGMA-co-AA-co-GMA) could further react with amino groups of collagen fiber. The synergy between chrome tanning and the organic tanning effects provided by Cr-PPAG NPs resulted in a chrome-less tanning technology. Finally, the final leather tanned with Cr-PPAG NPs exhibiting improved hygienic characteristics with excellent antiadhesive properties against E. coli and S. aureus bacterial strains. (C) 2020 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据