Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Crosslinked PDMS coatings

Fig. 12. Schematic of a polymer-coated crosslinked PDMS cap in contact with a polymer-coated flat surface. The PDMS cap is oxidized in 02-plasma, and the polymer layer is coated by solvent casting. On flat surface, the polymer layer is spin coated. Fig. 12. Schematic of a polymer-coated crosslinked PDMS cap in contact with a polymer-coated flat surface. The PDMS cap is oxidized in 02-plasma, and the polymer layer is coated by solvent casting. On flat surface, the polymer layer is spin coated.
In several studies on the adhesion of self-assembled monolayers, Chaudhury modified the surface of a crosslinked PDMS by corona-treatment following self-assembly of monolayers of varying chemistries. In a similar manner, Mangipudi et al. [55] coated thin film of high molecular weight polymer from a solvent on to the oxidized surface of a PDMS cap. These studies are discussed in Section 4.2. [Pg.95]

Damiron, D. Okhay, N. Akhrass, S. A. Cassagnau, P. Drockenmuller, E., Crosslinked PDMS Elastomers and Coatings from the Thermal Curing of Vinyl-Functionalized PDMS and a Diazide Aliphatic Crosslinker. J. Polym. Sci., Part A Polym. Chem. 2012, 50, 98-107. [Pg.26]

The study of acid-base interaction is an important branch of interfacial science. These interactions are widely exploited in several practical applications such as adhesion and adsorption processes. Most of the current studies in this area are based on calorimetric studies or wetting measurements or peel test measurements. While these studies have been instrumental in the understanding of these interfacial interactions, to a certain extent the interpretation of the results of these studies has been largely empirical. The recent advances in the theory and experiments of contact mechanics could be potentially employed to better understand and measure the molecular level acid-base interactions. One of the following two experimental procedures could be utilized (1) Polymers with different levels of acidic and basic chemical constitution can be coated on to elastomeric caps, as described in Section 4.2.1, and the adhesion between these layers can be measured using the JKR technique and Eqs. 11 or 30 as appropriate. For example, poly(p-amino styrene) and poly(p-hydroxy carbonyl styrene) can be coated on to PDMS-ox, and be used as acidic and basic surfaces, respectively, to study the acid-base interactions. (2) Another approach is to graft acidic or basic macromers onto a weakly crosslinked polyisoprene or polybutadiene elastomeric networks, and use these elastomeric networks in the JKR studies as described in Section 4.2.1. [Pg.134]

Because PDMS stamps are soft, a mold was fabricated (with Norland optical adhesive (NOA 73)) and used for the AFM analysis (Fig. 10.28c). A 25 pm NOA 73 photopolymer film was first coated on to a 12-inch x 14-inch glass sheet and laminated on to a PDMS stamp. The replication was completed by crosslinking the NOA 73 by UV exposure and removing the PDMS stamp. AFM images of the Au lines on a Mylar substrate fabricated using pCP from the stamp is shown in Fig. 10.28d. [Pg.262]

As indicated in Fig. 23.1, a sample consists of a rigid glass indenter and an elastomer substrate of crosslinked poly(dimethyl siloxane) (PDMS), which are both coated with the polymer layers of interest. These layers include a semicrystalline layer of poly(ethylene oxide) (PEO) sandwiched between glassy polymer layers of poly(tetramethyl bisphenol A polycarbonate) (TMPC). These polymers will be described in more detail within this section along with the steps that were taken to select these polymers for the study of a glassy/semicrystalline interface. [Pg.369]

GE foul release coatings are comprised of a silicone topcoat and a silicone oil additive, typically at 10 or 20 weight percent. The silicone topcoat, RTVll (GE Silicones) is a room temperature condensation moisture cure system, which contains a silanol terminated polydimethylsiloxane (PDMS), CaCOj filler, tetraethoxy-orthosilicate (TEOS) crosslinker and dibutyltin dilaurate, a Sn(IV) catalyst. The chemistry of this system is shown below in Figure 1. [Pg.181]

Pinto et al. reported the PDMS surface functionalization for the development of an immune-sensor for salivary cortisol analysis, using three different antibodies immobilization methods immobilization by passive adsorption on pristine PDMS silaniza-tion of PDMS surface with (3-aminopropyl)-triethoxysilane (APTES) to generate amino groups and posterior covalent immobilization of antibodies on APTES-PDMS using crosslinker glutaraldehyde (GA) coating the PDMS surface with BSA to block nonspecific protein adsorption, and then covalent bond of the protein A via GA (Pinto etal.,2015). [Pg.337]


See other pages where Crosslinked PDMS coatings is mentioned: [Pg.95]    [Pg.106]    [Pg.106]    [Pg.324]    [Pg.312]    [Pg.212]    [Pg.310]    [Pg.94]    [Pg.547]    [Pg.689]    [Pg.185]    [Pg.87]    [Pg.358]    [Pg.358]    [Pg.364]    [Pg.173]    [Pg.699]    [Pg.279]    [Pg.214]    [Pg.94]    [Pg.547]    [Pg.689]    [Pg.85]    [Pg.161]    [Pg.1690]    [Pg.526]    [Pg.281]    [Pg.311]    [Pg.313]    [Pg.173]    [Pg.166]    [Pg.56]    [Pg.144]    [Pg.312]    [Pg.312]    [Pg.317]    [Pg.365]    [Pg.368]   


SEARCH



PDMS

© 2024 chempedia.info