2 - dimensional auxetic structures in filtration applications

Authors

Alexis David P. Pascual ⋅ PH Physics Department, Ateneo de Manila University
Olivia Stephanie O. Castaneda ⋅ PH Physics Department, Ateneo de Manila University
Benjamin Chan ⋅ PH Physics Department, Ateneo de Manila University

Abstract

Auxetic materials are materials that expand upon application of tensile load and become thinner when compressive load is applied; in other words, materials having a negative Poisson’s ratio. Auxetic materials have profound application in filtration because of its capability of expanding its pores to allow for easy backwashing and variable sizes for particles that would be filtered. In this experiment, 2 auxetic structures are examined, with each having made from different fabrication methods. For the double arrowhead structure, a mold out of polymethylmethacrylate(PMMA) is made and a cast made of 100% silicone rubber is used. For the star honeycomb structure, 3D printed molds and room temperature vulcanized silicon rubber were used. Results show that both the structures exhibit auxetic characteristics only upon the application of axial stress. Both structures exhibited a reduced auxeticability, mainly because of the fabrication process. Both structures also exhibited excellent defouling properties since the pores of the structures opened up upon the application of tensile stress.

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Issue

2014: Proceedings of the 32nd Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP2014-PB-09

Section

Poster Session PB

Published

2014-10-17

How to Cite

[1]

ADP Pascual, OSO Castaneda, and B Chan, 2 - dimensional auxetic structures in filtration applications, Proceedings of the Samahang Pisika ng Pilipinas 32, SPP2014-PB-09 (2014). URL: https://proceedings.spp-online.org/article/view/1881.