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Poly(dimethylsiloxane) (PDMS) is widely used in integrated microfluidics and biomedical platforms due to its many advantageous properties. However, the use of common organic solvents in synthesis and diagnostic protocols performed in PDMS-based devices has prompted the search for treatments of PDMS able to avoid the undesirable consequences of the PDMS swelling. Due to the solvent volatility, systematic underestimation of the weight-gain can result from standard measurements of swollen weight in open environment and affected by time-delay comparable to the solvent evaporation rate. In this study, we consider dichloromethane (DCM) as an example-solvent that swells PDMS and consider: i) an experimental procedure properly designed for measuring the swollen weight of PDMS with control on the weight loss due to the solvent volatility, and ii) post-curing thermal aging of PDMS for effectively …
Publication date: 
1 Jan 2017

Maura Cesaria, Valentina Arima, Simona Rella, Cosimino Malitesta, Maria Grazia Manera, Roberto Rella

Biblio References: 
FOTONICA 2017: XIX edizione-Convegno Italiano delle Tecnologie Fotoniche