Superhydrophobic and Highly Oleophobic Nylon Surface

doi:10.6023/A14070510

Acta Chimica Sinica ›› 2014, Vol. 72 ›› Issue (9): 1023-1028.DOI: 10.6023/A14070510 Previous Articles Next Articles

Article

尼龙表面的超疏水及高度疏油改性

郝威, 邵正中

聚合物分子工程国家重点实验室复旦大学先进材料实验室高分子科学系上海 200433

投稿日期:2014-07-05 发布日期:2014-08-27
通讯作者: 邵正中 E-mail:zzshao@fudan.edu.cn
基金资助:
项目受国家自然科学基金（No. 21034003）和上海市优秀学术带头人计划（No. 12XD1401000）资助.

Superhydrophobic and Highly Oleophobic Nylon Surface

Hao Wei, Shao Zhengzhong

State Key Laboratory of Molecular Engineering of Polymers, Advanced Materials Laboratory and Department of Macromolecular Science, Fudan University, Shanghai 200433

Received:2014-07-05 Published:2014-08-27
Supported by:
Project supported by the National Natural Science Foundation of China (No. 21034003) and Program of Shanghai Subject Chief Scientist (No. 12XD1401000).

1. Superhydrophobic and Highly Oleophobic Nylon Surface.PDF(937KB)

Abstract

Superhydrophobic and superoleophobic surfaces are desirable for many practical applications. Creating a rough structure on polymer surface then modified by materials with low surface free energy can broaden the potential applications of polymers. In this research, we used three different methods to modify nylon 6 surface, then compared their effect on preparing nylon 6 surface roughness. Activation of amides by chemical reduction with borane-THF complex resulted in secondary amine groups, which could absorb silica spheres with different sizes driven by electrostatic attraction. On the other side, alkylation with (3-glycidoxypropyl) triethoxysilane (GPTES) was utilized to introduce silica-like reactivity to the surface, while plasma-treatment could import hydroxyl groups on nylon 6 surface. Then silica layer was generated and covalently bonded to the nylon 6 in situ. After treated with 3-aminopropyl-triethoxysiloxane (APS), silica spheres could be introduced to the sample more evenly than the first method, and then reacted with silicon tetrachloride to enhance mechanical robustness. Plasma-treatment was more fast and clean in preparing the stable roughness, which made this modification a favorable method. Different size silica spheres were used to construct roughness on nylon textile. After being modified with a perfluoroalkyl silane, the surface with all roughness had superhydrophobic property, while the wettability of low-energy liquid on the surface was depending on the micro structure size. Silica spheres with size between 500 nm and 900 nm were propitious to achieve stable Cassie state, which could cause high contact angles (about 140°) and low roll-off angles (about 20°) for 3 μL hexadecane droplets. On the other hand, for the samples adsorbed silica spheres with size between 20 nm and 200 nm, the contact angles and roll-off angles for 3 μL hexadecane were about 125° and 40°, respectively. Because of the air trapped between the roughnesses, the obtained superhydrophobic and highly oleophobic nylon textile also show high resistance to bacterial contamination. This may broaden the application of nylon.

Key words: nylon, surface modification, superhydrophobicity, highly oleophobicity, anti-bacterial adhesion

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Hao Wei, Shao Zhengzhong. Superhydrophobic and Highly Oleophobic Nylon Surface[J]. Acta Chimica Sinica, 2014, 72(9): 1023-1028.

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尼龙表面的超疏水及高度疏油改性

Superhydrophobic and Highly Oleophobic Nylon Surface

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