akrilatna veziva kerami cnih materialov acrylic binders for use in ceramic materials ursa klun majda zigon kemijski institut hajdrihova ljubljana prejem rokopisa received sprejem za objavo accepted for publication pri izdelavi kerami cnih polprevodniskih elementov oblikujemo keramicni prah glavna komponenta je zno v tanke plasti za ta namen pripravimo stabilne suspenzije keramicnega prahu z dodatkom topila voda dispergenta veziva in mehcala akrilatna veziva in mehcala na vodni osnovi dajejo primerne keramicne plasti z gladkimi povrsinami ki so elasticne imajo primerno natezno trdnost in adhezijo ter so homogene akrilatna veziva ali mehcala smo sintetizirali z emulzijsko polimerizacijo z razlicnim razmerjem estrskih monomerov metilmetakrilata mma in etilakrilata ea spreminjali pa smo delez akrilne kisline ak s spreminjanjem razmerja in kolicine monomernih enot smo vplivali na koncne lastnosti kopolimerov karboksilne skupine ak reagirajo v vodnem mediju z zno oz amfoternimi hidroksilnimi oh skupinami ki nastanejo na povrsini kovinskega oksida vezavo kovinskih ionov zn na karboksilne skupine cooh v polimerni verigi lahko razlozimo z modelom multiplet klaster zaradi elektrostatskega privlacevanja med funkcionalnimi skupinami kopolimera in kovinskimi ioni najverjetneje nastajajo ionski pari kvadropleti seksapleti vecji multipleti in klastri ki so agregati razlicnih ionskih multipletov vezavo keramicnega prahu oz kovinskih zn ionov na karboksilne skupine kopolimera smo opazovali z infrardeco ftir in jedrsko magnetno resonancno nmr spektroskopijo klju cne besede akrilati cinkov oksid model multiplet klaster ceramic powder the major component is zno is formed in thin ceramic films for fabrication of different semi conductor elements this is possible by adding solvent water dispersant binder and plasticizer to ceramic powder water based acrylic binders and plasticizers give ceramic films with suitable final properties like elasticity strain adhesion homogeneity acrylic binders and plasticizers have been synhtesized by emulsion polymerisation with different ratios of ester monomers mma ea and different portion of acrylic acid aa the final properties of copolymers were varied by ratio of monomeric units in the presence of water the surface of zinc oxide is covered with amphoteric hydroxyl groups which react with the carboxylic groups of aa that can be explained by multiplet cluster model between charged monomers and metal ions are formed ionic pairs or higher multiplets caused by electrostatic forces multiplets can further aggregate to form clusters binding between ceramic powder i e metal ions and carboxylic groups was observed by ftir and nmr spectroscopy key words acrylates zinc oxide multiplet cluster model polni format za pregledovanje rabimo programski vmesnik adobe reader