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multi-stimuli-triggered and self-repairable fluorocarbon organic coatings with urea-formaldehyde microcapsules filled with fluorosilane

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Journal of Materials Science & Technology 2020年第10期42卷 70-83页

作者： Paul CUzoma Fuchun Liu En-Hou Han Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Shenyang Zhongke Engineering Technology Center for Corrosion Control Shenyang110016China Department of Polymer and Textile Engineering Federal University of TechnologyP.M.B.1526OwerriNigeria

For the purpose of overcoming the lack of durability problems associated with superhydrophobic surfaces which hitherto has limited their use;we prepared multi-stimuli wettability response coatings using a mixture of fluorocarbon resin and urea-formaldehyde microcapsules filled with fluorosilane via interfacial polymerization *** microcapsules are of good thermal stability and can be triggered to release their core content on exposure to atmospheric conditions resulting in the increase in the water contact angle from 97°to 151°.The prepared coatings gave good adhesion strength,and also showed an increase in the hydrophobic property after undergoing scratch,solvent and UV accelerated aging *** addition,they offered good self-healing of the hydrophobic property after an initial loss due to alkaline immersion and oxygen plasma *** electrochemical measurements revealed a remarkable impedance recovery and suppression of corrosion activities,suggesting them to be a potential candidate material for corrosion protection.

关键词： multi-stimuli Microcapsules Superhydrophobic Self-healing Coatings Anti-corrosion

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multi-stimuli responsive chromism of a bipyridinium-based coordination compound

Multi-stimuli responsive chromism of a bipyridinium-based co...

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中国化学会第八届全国配位化学会议

作者： Xiao-Dong Yang Jie Zhang School of Chemistry and Chemical Engineering Beijing Institute of Technology

In recent years,chromic materials have been a hot research topic due to their actual and potential applications in various high-tech ***,the existing chromic materials can merely be triggered by one or two outer stimuli,the rational design and assembly of chromic materials with more than three functionalities or responsivities are still in their *** reaction of cobalt(Ⅱ) salt and the bipyridinium derivative H DBCbpyBr yields a novel coordination compound[Co(DBCbpy)]·12 H *** compound crystallizes in the monoclinic space group C2/*** central Co(Ⅱ) ion shows a octahedral coordination *** acts as a 2-connected node which is bound by two DBCbpy ligands and four water molecules forming the basic building *** units are further packed in-ABCA’-fashion along the c axis via n-n stacking between the benzene rings of DBCbpy" ligands,which extends the structural motif to a 3 D supramolecular network with open channels(Figure 1).The solventaccessible volume of this title compound is 1829.6 A,with solvent-accessible voids of 36.2%,as calculated by *** interestingly,this title compound can exhibit chromic behavior in response to multiple outer stimuli such as light,heat,ammonia,some organic molecules and so on.

关键词： Coordination compound multi-stimuli Chromic materials

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多重响应性核壳结构纳米凝胶抗肿瘤药物载体研究

多重响应性核壳结构纳米凝胶抗肿瘤药物载体研究

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2014年全国高分子材料科学与工程研讨会

作者：黄娟张寒温凯凯薛亚楠罗晓刚蔡宁龙思会喻发全武汉工程大学

在过去的几年中,有多种不同类型的刺激响应性纳米凝胶体系被设计为抗癌药物的载体,并应用于对癌症的治疗研究中。研究表明,肿瘤组织(pH 6.5.2)中的pH比正常组织(pH 7.4)中的低[1]。除此之外,肿瘤细胞内谷胱甘肽浓度(11 mM)和细胞外(血浆... 详细信息

在过去的几年中,有多种不同类型的刺激响应性纳米凝胶体系被设计为抗癌药物的载体,并应用于对癌症的治疗研究中。研究表明,肿瘤组织(pH 6.5.2)中的pH比正常组织(pH 7.4)中的低[1]。除此之外,肿瘤细胞内谷胱甘肽浓度(11 mM)和细胞外(血浆中10μM)有显著差别[2]。因此,pH和还原响应是设计环境敏感纳米凝胶的两个最有吸引力的刺激因素。本

关键词： pH GSH multi-stimuli nanogel drug carrier

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