Micro-nano hierarchically structured nylon 6,6 surfaces with unique wettability

Liang Zhang; Xiaoyan Zhang; Zhen Dai; Junjie Wu; Ning Zhao; Jian Xu

doi:10.1016/j.jcis.2010.01.044

Micro-nano hierarchically structured nylon 6,6 surfaces with unique wettability

J Colloid Interface Sci. 2010 May 1;345(1):116-9. doi: 10.1016/j.jcis.2010.01.044. Epub 2010 Jan 25.

Authors

Liang Zhang¹, Xiaoyan Zhang, Zhen Dai, Junjie Wu, Ning Zhao, Jian Xu

Affiliation

¹ Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.

PMID: 20144830
DOI: 10.1016/j.jcis.2010.01.044

Abstract

A micro-nano hierarchically structured nylon 6,6 surface was easily fabricated by phase separation. Nylon 6,6 plate was swelled by formic acid and then immersed in a coagulate bath to precipitate. Micro particles with nano protrusions were generated and linked together covering over the surface. After dried up, the as-formed surface showed superhydrophilic ability. Inspired by lotus only employing 2-tier structure and ordinary plant wax to maintain superhydrophobicity, paraffin wax, a low surface energy material, was used to modify the hierarchically structured nylon 6,6 surface. The resultant surface had water contact angle (CA) of 155.2+/-1.3 degrees and a low sliding angle. The whole process was carried on under ambient condition and only need a few minutes.