Article history: Polymer products with micro/nano-structures have excellent mechanical and optical properties, chem- Received 26 May 2017 ical resistance, and other advantages. Injection molding is one of the most potential techniques to Received in revised form 26 July 2017 fabricate polymer products with micro/nano-structures artiﬁcially in large numbers. In this study, a Accepted 1 August 2017 surface approach to fabricate high aspect ratio nanopillars and micro/nano combined structures was Available online 5 August 2017 presented. Mold insert with micropillar arrays and nanopillars on its surface was prepared by combing anodic aluminum oxide (AAO) template and etched plate. Anti-sticking modiﬁcation was done on the Keywords: template to realize a better demolding quality. The inﬂuences of mold temperature and polymer material Injection molding on the ﬁnal replication quality were investigated. The results showed that the ﬁnal replication quality of Anodic aluminum oxide (AAO) high aspect ratio nanopillars was greatly improved as compared with the unprocessed template. Polymer High aspect ratio nanopillar with low elongation at break was not suitable to fabricate structures with high aspect ratio via injection Super-hydrophobicity molding. For polypropylene surface, the experimental results of static contact angles were almost consis- tent with Cassie-Baxter equation. When the mold temperature
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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