The polydopamine-enhanced superadhesion and fracture strength of honeycomb polyurethane porous membranes.
The polydopamine-enhanced superadhesion and fracture strength of honeycomb polyurethane porous membranes.
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聚多巴胺增强蜂窝状聚氨酯多孔膜的超附着力和断裂强度
DOI：
10.1039/c9ra07887h
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发表时间：
2020-01-07
期刊：
影响因子：
3.9
通讯作者：
Zhao, Jinsheng
中科院分区：
文献类型：
--
作者：
Xue, Mingshan;Zhou, Dan;Ji, Yuwei;Xie, Yu;Li, Changquan;Zhao, Jinsheng
自然界生物表面的超疏水特性引起了科学界和工业界的广泛关注。相对于荷叶的滚动超疏水状态，壁虎和爬山虎的粘附性超疏水状态在许多领域也具有重要意义。本工作选择生物相容性好、附着力强的聚多巴胺(PDA)作为模拟三尖线虫吸盘分泌的物质，并将其沉淀在蜂窝型多孔膜(PUPM)表面。结果表明，所制备的蜂窝状PUPM具有与壁虎和三尖壁虎相似的特殊的超粘附性。在水溶液中自聚合形成的PDA相当于一种双面胶粘剂，获得了PDA和PUPM的微纳结构，并表现出更高的表面疏水性和改善的粘接性能。即使PDA的表面沉淀和正十二烷基硫醇的改性使接触角增加到160°以上，表面对水的粘附性也很强，并保持稳定。PDA胶粘剂的加入能有效改变PUPM的微孔结构，提高粘度，有利于提高断裂强度。
The superhydrophobic properties of biological surfaces in nature have attracted extensive attention in scientific and industrial circles. Relative to the rolling superhydrophobic state of lotus leaves, the adhesive superhydrophobic state of geckos and Parthenocissus tricuspidata is also significant in many fields. In this work, polydopamine (PDA) with its excellent biological compatibility and strong adhesion was selected as a substance to simulate the secretion of the suckers of P. tricuspidata and it was precipitated at the surface of honeycomb polyurethane porous membranes (PUPM). The results demonstrated that the honeycomb PUPM, as prepared, displayed special super-adhesion properties similar to those of geckos and P. tricuspidata. PDA formed via self-polymerization in aqueous solution was equivalent to a double-sided adhesive, acquiring a micro–nano structure of PDA and PUPM and displaying increased surface hydrophobicity and improved adhesion properties. Even when the surface precipitation of PDA and modification with n-dodecyl mercaptan made the contact angle increase to more than 160°, the surface adhesion to water was rather strong and remained stable. The addition of the PDA adhesive can effectively change the microporous structure of PUPM, enhancing the viscosity, and facilitating an enhancement in the fracture strength.
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影响因子：
4.7
作者：
Han, Gang;Zhang, Sui;Chung, Tai-Shung
通讯作者：
Chung, Tai-Shung
影响因子：
13.3
作者：
Sun, TL;Tan, H;Jiang, L
通讯作者：
Jiang, L
影响因子：
2.3
作者：
Roh, JH;Lee, JH;Yoon, TH
通讯作者：
Yoon, TH
影响因子：
9.5
作者：
Tan, K;Obendorf, SK
通讯作者：
Obendorf, SK
DOI：
10.1098/rsta.2016.0191
发表时间：
2016-08-06
影响因子：
5
作者：
Barthlott, W.;Mail, M.;Neinhuis, C.
通讯作者：
Neinhuis, C.