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Mechanical Property of Hierarchically Porous PDMS according to Mixing Conditions
S. Lee(이상민),J. Lim(임종경),T. Yoon(윤태운),J. H. Bae(배재현) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
A PDMS (Polydimethylsiloxane) material has been widely used in a lab-on-a-chip, an optical device, a wearable device, etc., because of chemical resistance, flexibility, high biocompatibility, and good optical transparency. When such a PDMS material is manufactured in a porous form, it can have a low density and a large surface area to volume ratio, so many studies are being actively conducted to apply it to an oil absorbent, a flexible pressure sensor with high sensitivity, and a scaffold in bio and tissue engineering field. In this study, a hierarchically porous PDMS using a sieved commercial salt (Sodium Chloride) was fabricated, and changes in mechanical properties of porous PDMS according to the size of salt particle (Adjusted according to Sieve Size) were analyzed. A test sample in the form of a cylinder was prepared according to the size of salt particle, the compressive modulus was measured, and the change of the elastic modulus was comparatively analyzed.