Elastic effects of polymer coatings on surface acoustic waves
Surface acoustic wave (SAW) devices are presently receiving careful scrutiny for applications in chemical sensing as well as in polymer characterization. Gas monitors based on SAW sensors have the potential for miniaturization and high sensitivity to a wide variety of substances. Polymer characteriz...
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| Veröffentlicht in: | Analytical chemistry (Washington) 1990-08, Vol.62 (15), p.1649-1656 |
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| container_title | Analytical chemistry (Washington) |
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| creator | Bartley, David L Dominguez, Dawn D |
| description | Surface acoustic wave (SAW) devices are presently receiving careful scrutiny for applications in chemical sensing as well as in polymer characterization. Gas monitors based on SAW sensors have the potential for miniaturization and high sensitivity to a wide variety of substances. Polymer characterization is applicable to such diverse fields as protective coating design and decontamination of polymers. To better understand the physical mechanisms behind SAW response, the effects of the elastic properties in comparison to the mass loading of polymer coatings on SAW substrates were investigated. A theoretical basis for the effects of vapor-induced swelling or of thermal expansion was established. Compressive tension and its effect on SAW frequencies were found to be simple to describe, if there is no film slippage or polymer flow. The response of quartz substrate SAW crystals coated with polycarbonate and polyimide (glassy polymers) upon exposure to toluene and methanol was measured. Practical problems as to film uniformity, thickness measurement, and environmental control necessary in such measurements are described. Contrary to recent reports in the literature, no significant elastic tightening effect was observed with these vapor/polymer pairs. |
| doi_str_mv | 10.1021/ac00214a023 |
| format | Article |
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Gas monitors based on SAW sensors have the potential for miniaturization and high sensitivity to a wide variety of substances. Polymer characterization is applicable to such diverse fields as protective coating design and decontamination of polymers. To better understand the physical mechanisms behind SAW response, the effects of the elastic properties in comparison to the mass loading of polymer coatings on SAW substrates were investigated. A theoretical basis for the effects of vapor-induced swelling or of thermal expansion was established. Compressive tension and its effect on SAW frequencies were found to be simple to describe, if there is no film slippage or polymer flow. The response of quartz substrate SAW crystals coated with polycarbonate and polyimide (glassy polymers) upon exposure to toluene and methanol was measured. Practical problems as to film uniformity, thickness measurement, and environmental control necessary in such measurements are described. 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The response of quartz substrate SAW crystals coated with polycarbonate and polyimide (glassy polymers) upon exposure to toluene and methanol was measured. Practical problems as to film uniformity, thickness measurement, and environmental control necessary in such measurements are described. Contrary to recent reports in the literature, no significant elastic tightening effect was observed with these vapor/polymer pairs.</description><subject>Analytical chemistry</subject><subject>Chemistry</subject><subject>Elasticity</subject><subject>Electrochemical methods</subject><subject>Exact sciences and technology</subject><subject>Polymers - analysis</subject><subject>Surface Properties</subject><issn>0003-2700</issn><issn>1520-6882</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0EFP2zAUB3BrApXS7cQZKQcEhynbs53E7mGHqeoGUiVgdJddrBfnGQXSpNgJrN9-Zq0qDhysZ_n99PT8Z-yEwxcOgn9FC7FkCEJ-YGOeC0gLrcUBGwOATIUCOGLHITwAcA68GLGRyOId1Jh9mzcY-tom5BzZPiSdS9Zds1mRT2yHfd3ex7c2CYN3aClB2w3__Qs-U_jIDh02gT7t6oT9_jFfzi7TxfXPq9n3RYpSyz51VlWkSlKVqKZkXYkZr9DprODaWakESu7yvNQSclGCQ0Ga4ikqJ0sscjlh59u5a989DRR6s6qDpabBluI-RseP8qnWEX7eQuu7EDw5s_b1Cv3GcDCvYZk3YUV9uhs7lCuq9naXTuyf7foYLDbOY2vrsGfZVMlcQmTpltWhp7_7NvpHUyipcrO8uTOS3y74L6HNn-gvth5tMA_d4NuY3bsL_gOvtIyB</recordid><startdate>19900801</startdate><enddate>19900801</enddate><creator>Bartley, David L</creator><creator>Dominguez, Dawn D</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19900801</creationdate><title>Elastic effects of polymer coatings on surface acoustic waves</title><author>Bartley, David L ; Dominguez, Dawn D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a383t-fc7de7be7d2d9ecfba41daf84618fc372a31f55b83052b0fa2e8e2e86df3ba653</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Analytical chemistry</topic><topic>Chemistry</topic><topic>Elasticity</topic><topic>Electrochemical methods</topic><topic>Exact sciences and technology</topic><topic>Polymers - analysis</topic><topic>Surface Properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bartley, David L</creatorcontrib><creatorcontrib>Dominguez, Dawn D</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Analytical chemistry (Washington)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bartley, David L</au><au>Dominguez, Dawn D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Elastic effects of polymer coatings on surface acoustic waves</atitle><jtitle>Analytical chemistry (Washington)</jtitle><addtitle>Anal. 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| ispartof | Analytical chemistry (Washington), 1990-08, Vol.62 (15), p.1649-1656 |
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| language | eng |
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| source | MEDLINE; ACS Publications |
| subjects | Analytical chemistry Chemistry Elasticity Electrochemical methods Exact sciences and technology Polymers - analysis Surface Properties |
| title | Elastic effects of polymer coatings on surface acoustic waves |
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