{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-Y1FXRUND/ec982924-1a0e-4169-9692-4e34bfa539a8/HTML","dcterms:extent":"42 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-Y1FXRUND/8358459a-cfec-40b2-b56d-c211a3205511/PDF","dcterms:extent":"1932 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:doc-Y1FXRUND/e1197187-d0f2-4330-93f5-7b686131642b/TEXT","dcterms:extent":"39 KB"}],"edm:TimeSpan":{"@rdf:about":"1992-1999","edm:begin":{"@xml:lang":"en","#text":"1992"},"edm:end":{"@xml:lang":"en","#text":"1999"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:doc-Y1FXRUND","edm:isNextInSequence":{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:doc-UZI56O5A"},"dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-QKUCN2BD"},{"@xml:lang":"sl","#text":"Kovine zlitine tehnologije"}],"dcterms:issued":"1997","dc:creator":["Hadjichristidis, Nikos","Pispas, S.","Pitsikalis, M."],"dc:format":[{"@xml:lang":"sl","#text":"10 strani"},{"@xml:lang":"sl","#text":"letnik:31"},{"@xml:lang":"sl","#text":"številka:6"},{"@xml:lang":"sl","#text":"str. 571-580"}],"dc:identifier":["ISSN:1318-0010","COBISSID:72618","URN:URN:NBN:SI:doc-Y1FXRUND"],"dc:language":"en","dc:publisher":[{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},{"@xml:lang":"sl","#text":"Železarna Jesenice"},{"@xml:lang":"sl","#text":"Železarna Ravne"},{"@xml:lang":"sl","#text":"Železarna Štore"}],"dc:subject":[{"@xml:lang":"sl","#text":"karakterizacija"},{"@xml:lang":"sl","#text":"polimeri"},{"@xml:lang":"sl","#text":"polimerizacija"},{"@xml:lang":"sl","#text":"struktura"},{"@rdf:resource":"http://www.wikidata.org/entity/Q81163"}],"dcterms:temporal":{"@rdf:resource":"1992-1999"},"dc:title":{"@xml:lang":"sl","#text":"Model polymers with dimethylamine and sulfozwitterionic end-groups. Synthesis and self assembly in solution and in bulk| Modelni polimeri z dimetilaminskimi in sulfozwitterionskimi končnimi skupinami|"},"dc:description":[{"@xml:lang":"sl","#text":"The dilute solution and bulk properties of a variety of well-defined polymers of different architectures (linear homopolymers, diblock and triblock copolymers and star homopolymers) having dimethylamine and sulfobetaine end groups mainly synthesized in our laboratory are reviewed. The end functionalized polymers were synthesized by means of anionic polymerisation high vacuum techniques, using 3-dimethylaminopropyl-lithium as initiator for the introduction of the dimethylamine group at the chain end. This group was converted to sulphozwitterionic by reaction with cyclopropanesultone. Extensive molecular characterization proved the high homogeneity of these model materials. Their aggregation properties in dilute solutions, of solvents of different polarity and selectivity towards different parts of the molecules, were studied by viscometry, static and dynamic light scattering. The ?$\\omega$?-functionalized polystyrenes and the block copolymers of styrene have a much lower degree of association, than the homopolydienes, probably due to the polarizability of the phenyl group. The bulk properties of end-functionalized homopolymers and diblocks were studied by SAXS, rheology and dielectric spectroscopy revealing new features of self organisation at this low ionic content and extraordinary phase behaviour at high temperatures. The adsorption behaviour of stars with different number of functionalized arms in dilute solutions was also investigated by ellipsometry showing different behaviour compared to linear polymers"},{"@xml:lang":"sl","#text":"V delu je podan pregled dlasstnosti vrste dobro definiranih polimerov z različnimi arhitekturami (linearni homopolimeri, diblok in triblok kopolimeri, zvezdasti homopolimeri) z dimetilaminskimi in sulfobetainskimi končnimi skupinami, v razredčenih raztopinah in v masi. Polimere s funkcionalnimi končnimi skupinami smo sintetizirali z anionsko polimerizacijo z visoko-vakuumsko tehniko. Z iniciaatorjem 3-dimetilaminopropilitijem smo na konec verige uvedli dimetilaminsko skupino, ki smo jo z reakcijo s ciklopropansultonom prevedli v sulfozwitterionsko. Temeljita molekularna karakterizacija je potrdila, da so sintetizirani modelni materiali zelo homogeni. Z viskozimetrijo ter statičnim in dinamičnim sipanjem svetlobe smo raziskali njihove agregacijske lastnosti v razredčenih raztopinah, v topilih različne polarnosti in selektivnosti do določenih delov molekul. ?$\\omega$?-funkcionalizirani polistireni in blok kopolimeri stirena imajo, verjetno zaradi polarizabilnosti fenilne skupine, mnogo nižjo stopnjo asociacije kot homopolidieni. S SAXS reologijo in z dielektrično spektroskopijo smo študirali lasstnosti ?$\\omega$?-funkcionaliziranih homopolimerov in diblokov v masi ter ugotovili nove oblike samoorganiziranistipri tej nizki koncentraciji ionov ter nenavadno obnašanje faz pri visoki temperaturi. Z elipsometrijo smo raziskali tudi adsorpcijske lastnosti zvezdastih polimerov z različnim številom funkcionaliziranih vej v razredčenih raztopinah in ugotovili, da se razlikujejo od lastnosti linearnih polimerov"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:doc-Y1FXRUND","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:doc-Y1FXRUND"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:doc-Y1FXRUND/8358459a-cfec-40b2-b56d-c211a3205511/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:dataProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:doc-Y1FXRUND/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:doc-Y1FXRUND"}}}}