中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A seawater triggered dynamic coordinate bond and its application for underwater self-healing and reclaiming of lipophilic polymer

文献类型:期刊论文

作者Xia, Nan Nan3; Xiong, Xiao Min1; Wang, Junhu2,4; Rong, Min Zhi3; Zhang, Ming Qiu3
刊名CHEMICAL SCIENCE
出版日期2016
卷号7期号:4页码:2736-2742
ISSN号2041-6520
DOI10.1039/c5sc03483c
文献子类Article
英文摘要In this work, water triggered dynamic catechol-Fe3+ coordinate bonds are revealed and studied at atomic, molecular and macroscopic levels using Mossbauer spectroscopy, rheological analysis, etc. DOPA-iron complexation is found to be dynamic in the presence of water, and this dynamic manner is immobilized after removing water. Accordingly, a water saturated lipophilic polymer containing catechol-Fe3+ crosslinks, rather than the dry version, exhibits dynamic coordination-dissociation behavior. In addition, a migration of iron proves to be enabled in the catechol-Fe3+ crosslinked polymer immersed in seawater. Rearrangement of the dynamic catechol-Fe3+ coordinate bonds among different molecules is thus favored. Based on these results, we develop a bulk lipophilic polymer solid capable of repeated autonomic recovery of strength in seawater without manual intervention. When the polymer is damaged in seawater, reshuffling of the mobile hyperbranched polymer networks across the crack interface, owing to the dynamic catechol-Fe3+ crosslinkages activated by the alkaline circumstances, rebinds the damaged site. By taking advantage of the same mechanism, the polymer can be remolded with the help of seawater and this recycled polymer is still self-healable in seawater. Unlike in the case of conventional polymers where water would shield macromolecules from interacting, here, seawater is a necessary environmental assistant for the material interaction to take effect. The outcomes are beneficial for deepening the understanding of coordinate bonds, and the development of robust underwater self-healing lipophilic polymers.
WOS关键词HYDROGELS ; COATINGS ; WATER ; PH ; NETWORKS ; EXCHANGE ; ADHESION
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000372614800036
出版者ROYAL SOC CHEMISTRY
源URL[http://cas-ir.dicp.ac.cn/handle/321008/171152]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Rong, Min Zhi; Zhang, Ming Qiu
作者单位1.Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China
2.Dalian Inst Chem Phys, Lab Catalysts & New Mat Aerosp, Dalian 116023, Peoples R China
3.Sun Yat Sen Univ, Sch Chem & Chem Engn, Key Lab Polymer Composite & Funct Mat, Minist Educ,GD HPPC Lab, Guangzhou 510275, Guangdong, Peoples R China
4.Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Xia, Nan Nan,Xiong, Xiao Min,Wang, Junhu,et al. A seawater triggered dynamic coordinate bond and its application for underwater self-healing and reclaiming of lipophilic polymer[J]. CHEMICAL SCIENCE,2016,7(4):2736-2742.
APA Xia, Nan Nan,Xiong, Xiao Min,Wang, Junhu,Rong, Min Zhi,&Zhang, Ming Qiu.(2016).A seawater triggered dynamic coordinate bond and its application for underwater self-healing and reclaiming of lipophilic polymer.CHEMICAL SCIENCE,7(4),2736-2742.
MLA Xia, Nan Nan,et al."A seawater triggered dynamic coordinate bond and its application for underwater self-healing and reclaiming of lipophilic polymer".CHEMICAL SCIENCE 7.4(2016):2736-2742.

入库方式: OAI收割

来源:大连化学物理研究所

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