TY - THES AU - Czibulya, Zsuzsanna TI - Talajszuszpenziók reológiai vizsgálata PB - Szegedi Tudományegyetem (SZTE) PY - 2010 SP - 115 UR - https://m2.mtmt.hu/api/publication/1470894 ID - 1470894 LA - Hungarian DB - MTMT ER - TY - THES AU - Janovák, László TI - Intelligens hidrogél/rétegszilikát és hidrogél/arany nanohibrid rendszerek szintézise és tulajdonságai PB - Szegedi Tudományegyetem (SZTE) PY - 2010 SP - 116 UR - https://m2.mtmt.hu/api/publication/21011200 ID - 21011200 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Janovák, László AU - Varga, János AU - Kemény, Lajos AU - Dékány, Imre TI - Composition dependent changes in the swelling and mechanical properties of nanocomposite hydrogels JF - NANOPAGES J2 - NANOPAGES VL - 4 PY - 2009 IS - 1 SP - 13 EP - 32 PG - 20 SN - 1787-4033 DO - 10.1556/Nano.2008.00002 UR - https://m2.mtmt.hu/api/publication/2890051 ID - 2890051 AB - We are synthetized thermo- and pH-sensitive gels, which are then tested as skin extenders. Our aim is the development of copolymer and composite hydrogels that, when implanted under the human skin, swell osmotically and thereby induce skin growth. During the polimerization reaction we are produced copolymers with varyable composition, which are proceed from two acrylic compounds [N- isopropyl- acrylamide (NIPAAm), and acrylamide (AAm)]. The mechanical strength and the swelling stability of the gels are enhanced by the addition of fillers [Na- montmorillonite (Na- m.) and with alkyl- ammonium ion organophilized Na- montmorillonites [(C n - m.), n = 4, 12, 18]. With this method we are synthetized composite- hydrogels. The filler content of composites varies between 1 and 25 wt%. We observed that in the case of composites synthesized with the addition of fillers, relatively low filler contents (1-5 wt%) resulted in more extensive swelling and stronger gel structure. In the course of the experiments the monomer composition of the gels (0/100-100/0 mol% NIPAAm/AAm) and in the case of composites, the quality (montmorillonite and organophilized montmorillonite) and quantity (1-25 wt%) of fillers are varied. The extent of swelling and the viscoelastic properties can be manipulated through the ratios of these parameters. In the case of certain copolymer and composite gels, values of desorption enthalpy (ΔH m ) corresponding to the actual water contents were also determined by thermoanalytical measurements (DSC). Swelling values determined by gravimetry and enthalpies calculated from DSC measurements were found to be in good correlation. Evaluation and comparison of the rheological and DSC results also allowed conclusions to be drawn concerning the types of interaction operating among the three components of the system, i.e. the polymer skeleton, the filler and water molecules. We found that water molecules within the gel matrix are bound to the 3-D polymer lattice with bonds of different strengths and the strength of these interactions are dependent on both hydrophilicity and charge conditions. In the case of hydrophobic NIPAAm composites a more extensive swelling can be achieved by applying montmorillonite fillers with hydrophobized surfaces, whereas in the case of hydrophilic AAm-based composites the use of hydrophilic montmorillonite fillers ensure more extensive swelling. LA - English DB - MTMT ER - TY - THES AU - Majzik, Andrea TI - Határfelületi és kolloid kölcsönhatások montmorillonit, vas-oxid, huminsav és kalciumion tartalmú összetett vizes diszperz rendszerekben PB - Szegedi Tudományegyetem (SZTE) PY - 2008 SP - 114 UR - https://m2.mtmt.hu/api/publication/246963 ID - 246963 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kristó, Katalin AU - Bajdik, J AU - Erős, István AU - Dékány, Imre AU - Pallai, Zs AU - Hódi, Klára TI - Formulation of an intermediate product from human serum albumin for the production of solid dosage form JF - EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS J2 - EUR J PHARM BIOPHARM VL - 68 PY - 2008 IS - 3 SP - 741 EP - 746 PG - 6 SN - 0939-6411 DO - 10.1016/j.ejpb.2007.07.002 UR - https://m2.mtmt.hu/api/publication/1120817 ID - 1120817 LA - English DB - MTMT ER - TY - JOUR AU - Kristó, Katalin AU - Bajdik, J AU - Erős, István AU - Dékány, Imre AU - Pallai, Z AU - Hódi, Klára TI - Formulation of an intermediate product from human serum albumin for the production of a solid dosage form JF - EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES J2 - EUR J PHARM SCI VL - 32 PY - 2007 IS - Suppl. 1. SP - S35 EP - S35 PG - 1 SN - 0928-0987 DO - 10.1016/j.ejps.2007.05.075 UR - https://m2.mtmt.hu/api/publication/2510822 ID - 2510822 LA - English DB - MTMT ER - TY - JOUR AU - Papp, Szilvia AU - Dékány, Imre TI - Nucleation and growth of palladium nanoparticles stabilized by polymers and layer silicates JF - COLLOID AND POLYMER SCIENCE J2 - COLLOID POLYM SCI VL - 284 PY - 2006 IS - 9 SP - 1049 EP - 1056 PG - 8 SN - 0303-402X DO - 10.1007/s00396-006-1479-6 UR - https://m2.mtmt.hu/api/publication/247008 ID - 247008 LA - English DB - MTMT ER - TY - JOUR AU - Kun, Róbert AU - Mogyorósi, Károly AU - Dékány, Imre TI - Synthesis and structural and photocatalytic properties of TiO2/montmorillonite nanocomposites JF - APPLIED CLAY SCIENCE J2 - APPL CLAY SCI VL - 32 PY - 2006 IS - 1-2 SP - 99 EP - 110 PG - 12 SN - 0169-1317 DO - 10.1016/j.clay.2005.09.007 UR - https://m2.mtmt.hu/api/publication/247012 ID - 247012 LA - English DB - MTMT ER - TY - JOUR AU - Kun, Róbert AU - Szekeres, Márta AU - Dékány, Imre TI - Photooxidation of dichloroacetic acid controlled by pH-stat technique using TiO2/layer silicate nanocomposites JF - APPLIED CATALYSIS B-ENVIRONMENTAL J2 - APPL CATAL B-ENVIRON VL - 68 PY - 2006 IS - 1-2 SP - 49 EP - 58 PG - 10 SN - 0926-3373 DO - 10.1016/j.apcatb.2006.07.012 UR - https://m2.mtmt.hu/api/publication/247013 ID - 247013 LA - English DB - MTMT ER - TY - JOUR AU - Szabó, Tamás AU - Csákiné Tombácz, Etelka AU - Nyergesné Illés, Erzsébet AU - Dékány, Imre TI - Enhanced acidity and pH-dependent surface charge characterization of successively oxidized graphite oxides JF - CARBON J2 - CARBON VL - 44 PY - 2006 IS - 3 SP - 537 EP - 545 PG - 9 SN - 0008-6223 DO - 10.1016/j.carbon.2005.08.005 UR - https://m2.mtmt.hu/api/publication/1011029 ID - 1011029 N1 - Megjegyzés-23320583 Megjegyzés-22254717 Z9: 101 WC: Chemistry, Physical; Materials Science, Multidisciplinary Megjegyzés-22254733 Z9: 101 WC: Chemistry, Physical; Materials Science, Multidisciplinary LA - English DB - MTMT ER -