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Micropatterning of Porous Polymer Structures

[+] Author Affiliations
Wei Zhang, Donggang Yao

Georgia Institute of Technology, Atlanta, GA

Min Li, Chaosheng Wang

Georgia Institute of Technology, Atlanta, GADonghua University, Shanghai, China

Jack G. Zhou

Drexel University, Philadelphia, PA

Paper No. MSEC2012-7408, pp. 987-993; 7 pages
doi:10.1115/MSEC2012-7408
From:
  • ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
  • ASME 2012 International Manufacturing Science and Engineering Conference
  • Notre Dame, Indiana, USA, June 4–8, 2012
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5499-0
  • Copyright © 2012 by ASME

abstract

In contrast to the immense literature in porous material generation, micropatterning of porous devices remains a technical challenge. In this study, a new process for micropatterning of porous structures with a controllable morphology was developed and investigated. This process combines polymer melt blending, hot embossing, and in mold annealing for geometrical pattern transfer and simultaneous morphological control. A special effort was made to generate a microgroove pattern with an open pore structure. Parametric experimental studies were conducted on stamps with different feature sizes under different processing conditions. The results demonstrated the feasibility and the versatility of the proposed technique in fabricating micropatterned porous structures. By varying the geometrical and boundary conditions during in mold annealing, micropatterns with graded porous structures were demonstrated.

Copyright © 2012 by ASME

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