NOVEL SENSITIVE LAYER FOR RELATIVE HUMIDITY SENSOR AND METHOD FOR MANUFACTURING THE SAME

The invention relates to a process for preparing a chemiresistive sensor for humidity monitoring. According to the invention, the process comprises the following stages: preparation of a ternary composition consisting of polyvinyl-co-ethylene alcohol, 15...25% by mass polyvinyl pyrrolidone and 0.1.....

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Bibliographische Detailangaben
Hauptverfasser: BUIU OCTAVIAN, COBIANU CORNEL, MARINESCU MARIA ROXANA, ŞERBAN BOGDAN CĂTĂLIN
Format: Patent
Sprache:eng ; rum
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Zusammenfassung:The invention relates to a process for preparing a chemiresistive sensor for humidity monitoring. According to the invention, the process comprises the following stages: preparation of a ternary composition consisting of polyvinyl-co-ethylene alcohol, 15...25% by mass polyvinyl pyrrolidone and 0.1...10% by mass conductive and hydrophilic CNO materials, deposition of said composition from a water : propanol solution in a ratio of 1:1 by volume, by spin coating or drop casting method, on a dielectric substrate of polyethylene terephthalate provided with linear or interdigitated electrodes, resulting in a relative humidity chemiresistive sensor. Invenţia se referă la un procedeu de obţinere a unui senzor chemirezistiv pentru monitorizarea umidităţii. Procedeul, conform invenţie, constă în etapele de preparare a unei compoziţii ternare constituită din alcool polivinilic-co-etilenă, 15...25% masic polivinilpirolidonă şi 0,1...10% masic materiale nanocarbonice conductive şi hidrofile de tip ceapă (CNO), depunerea compoziţiei din soluţie apă: propanol în raport 1:1 v/v prin metoda spin coating sau drop casting, pe un substrat dielectric din polietilentereftalat, prevăzut cu electrozi configuraţi liniari sau interdigitaţi, rezultând un senzor chemirezistiv de umiditate relativă.