Method of hydrolytically stable bonding of elastomers to substrates

摘要

Active devices such as pumps and mixers have been fabricated in plastic-PDMS hybrid devices. By utilizing functionalized bis-silane primers, bond strength between Polycarbonate or PMMA and PDMS improved in dry and aqueous environments. Plastic-primer-PDMS layers exposed to acid and base solutions at 70° C. for 2 hours showed no signs of delamination at 30 psi for pH −1 to 15 and 60 psi for pH 0 to 15. A peristaltic pump fabricated in polycarbonate achieved consistent flow rates up to peristaltic cycle frequencies of 10 Hz in water, 1OM HCl, and 1OM NaOH solutions.

主权项

1. A method of bonding two surfaces said method comprising:
associating a molecule comprising at least two silane-derivative groups with a first surface; contacting a second surface to said molecule; wherein said first surface is a plastic material, and said second surface is an elastomer comprising Si, and wherein said second surface is a solid or cured surface; wherein said molecule comprising at least two silane-derivative groups has formula (Y)m(Z)3-mSi—X—Si(Y)m(Z)3-m or formula (Y)m(Z)3-mSi—X—R—X—Si(Y)m(Z)3-m, wherein X is a C1-C10 branched or unbranched alkyl chain, Y and Z are alkoxy groups, m is 1-3, and R is an organic reactive group, and wherein at least one of Y and Z is a bulky alkoxy group.