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 |
| DOI | 10.1039/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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