Hydrophilic Elastomers for Microcontact Printing of Polar Inks


David C. Trimbach , Mahmoud Al-Hussein , Wim H. de Jeu , Michel Decré , Dirk J. Broer , Cees W. M. Bastiaansen



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A moderately hydrophilic, thermoplastic elastomer (poly(ether-ester)) was investigated as a stamp material for microcontact printing of a polar ink:  pentaerythritol-tetrakis-(3-mercaptopropionate). Stamps with a relief structure were produced from this polymer by hot embossing, and a comparison was made with conventional poly(dimethylsiloxane) (PDMS) and oxygen-plasma-treated PDMS. It is shown that the hydrophilic stamps can be used for the repetitive printing (without re-inking) of at least 10 consecutive patterns, which preserve their etch resistance, and this in rather sharp contrast to conventional and oxygen plasma-treated PDMS stamps. It is argued that these enhanced printing characteristics of the hydrophilic stamps originate from an improved wetting and solubility of polar inks in the hydrophilic stamp.

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Date added: 2012-08-12 21:11:04 | Last time updated: 2012-08-12 19:11:04 | Viewed: 927 times

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