Formulation Prediction for Young's Modulus of Poly(dimethylsiloxane) by Spectroscopic Methods

Abstract

In this work, we refer to the fraction of hydrides and vinyl groups consumed in cross‐linking reaction as a variation of the properties of poly(dimethylsiloxane) (PDMS) with varying the formulation of a curing agent from 3.2 wt % to 50 wt %. Young's modulus, density, and refractive indices of PDMS were observed to have a maxima at a formulation of about 10 wt % of cross linker. The intensity of the Raman band for the SiH stretching mode in cross‐linker is almost zero if the cross‐linking agent is less than 10 wt %, but it is linearly increasing with increasing the content of cross‐linker. The dependence of the elastic modulus on the formulation could be explained in terms of the fraction of cross‐linked network. The analytical framework proposed in this work could be used for optimizing the formulation of PDMS and hence its properties can be tailored for specific applications.

Modeling Nonlinear Dynamics of Functionalization Layers: Enhancing Gas Sensor Sensitivity for Piezoelectrically Driven Microcantilever

“…This observed range of values significantly surpasses the recently reported range of 1–5 MPa for pure PDMS with different fabrication methods. − This is attributed to the possibility that additives to PDMS could lead to a Young’s modulus reaching ∼400 MPa as reported by Ariati et al…”

Development of eye phantom for mimicking the deformation of the human cornea accompanied by intraocular pressure alterations

“…In addition, the CRC of the eye phantoms was designed to be 8.5 mm. The Young’s modulus of the PDMS phantom materials was adjusted to approximately 380 kPa by controlling the composition of the liquid PDMS mixture (Sylgard 184, Dow Corning, the weight ratio of the silicone elastomer to the curing agent was 22:1) 29 . The Young’s modulus, representing the linear elasticity, was measured by a tensile method 30 .…”

Characterization of Microstructured Multiwalled Carbon Nanotube/Polydimethylsiloxane Composites for Piezoresistive Sensing Applications

“…According to the results presented in Table 1, the density of the bulk samples falls within the typical density values of PDMS, which ranges between 0.96 and 1.05 g cm À3 . [48,49] Adding MWCNT to PDMS reduces the density of the composites due to the lower density of MWCNT. Moreover, the porous samples presented lower density than their bulk counterparts, with the 3.0 wt% MWCNT/PDMS sample presenting the lowest density (0.887 AE 0.008 g cm À3 ) and the 5.5 wt% MWCNT/PDMS sample presenting the highest density (0.995 AE 0.018 g cm À3 ).…”