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Correlation Between High-pressure ZrO2 Electrical Properties and Crystallite Size
A.N. Trefilova1, I.V. Korionov1, A.N. Babushkin1,
W. Lojkowski2, A. Opalinska2
1Department of Physics, Ural State University, Ekaterinburg, Russia
2High Pressure Research Center, Polish Academy of Science, Warsaw, Poland
Direct Synthesis as a New Approach to Heteropolynuclear Complexes
V.N. Kokozay, D.V. Shevchenko
Department of Inorganic Chemistry, National Taras Shevchenko University, Kyiv, Ukraine
Formation of the Nanostructured Tb3+ Doped Yttrium Aluminum Garnet Prepared by the Glycol Route
P. Mazur1, D. Hreniak1, J. Niittykoski2,
W. Stręk1, J. Hölsä2
1Institute of Low Temperature and Structure Research, Polish Academy of Science, Wroclaw, Poland
2Department of Chemistry, University of Turku, Turku, Finland
Study of Pre-localized Graphite/Polyvinyl Chloride Composites for Electromagnetic Interference Shielding in X-band Frequency Range
V.K. Sachdev, N.K. Srivastava, Kamlesh Kumar, R.M. Mehra
Department of Electronic Science University of Delhi South Campus, New Delhi, India
Segmented Block Copolymers of Natural Rubber and 1,4-Butane diol -Toluene Diisocyanate Oligomers
S. Gopakumar, C.J. Paul, M.R. Gopinathan Nair
School of Chemical Sciences, Mahatma Gandhi University, Kerala, India
Abstract
Segmented block copolymers were synthesized from hydroxyl terminated liquid natural rubber (HTNR) and polyurethane oligomers (PU) which were formed from 1,4-butane diol (1,4-BDO) and toluene diisocyanate (TDI). The samples in two series were synthesized in solution by the one-step and two-step methods. They were characterized by spectral analysis, thermal analysis, etching studies, microscopy and mechanical testing. IR and NMR spectral data along with the etching studies support the chemical reaction leading to the block copolymerization. The differential scanning calorimetric (DSC) analysis showed a soft segment glass transition temperature at in the range -62°C and -63°C and a hard segment glass transition temperature between 87°C and 100°C for different samples. This observation and the two-stage thermal decomposition of the samples in thermogravimetric analysis (TGA) clearly indicated that the block copolymers are completely phase segregated systems. The amorphous heterophase morphology of the samples is indicated in the SEM which shows well defined beads of hard phase dispersed in a matrix. The SEM results along with the etching studies revealed that the samples are systems consisting of the block copolymer and some quantity of uncoupled polyurethane homopolymers present in the form of beads. The homopolymer beads suggest that the efficiency of the chain extension in the present method of synthesis is bit lower than expected. The tensile properties improved with the hard segment content in the samples. Low hard segment content leads to flexible elastomer while high hard segment content leads to the formation of rigid plastics. Intermediate compositions yielded rigid elastomers. Two-step samples showed slightly better properties compared to the one-step samples. This may be due to the systematic way by which the reaction progresses in the two-step synthesis. The overall properties are found to be lower than that of the conventional polyurethane elastomers. This is attributed to the absences of phase mixing and inability of the soft segments to crystalline under strain due to their short segments.
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Download article (PDF)The Influence of Ammonia, Aacetic Acid and Water Vapor on The Fluorescence of 2-naphthol Derivative Included in Langmuir-Blodget Films
A. Mirończyk1, A. Jankowski1, A. Chyla2, A. Ożyhar3, P. Dobryszycki3
1University of Zielona Góra, Institute of Biotechnology and Environmental Science, Zielona Góra Poland
2Wrocław University of Technology, Institute of Physical and Theoretical Chemistry, Wrocław, Poland
3Wrocław University of Technology. Institute of Organic Chemistry, Biochemistry and Biotechnology, Wrocław, Poland
New Ceramic Superionic Materials for IT-SOFC Applications
G. Pasciak, J. Chmielowiec, P. Bujlo
Electrotechnical Institute Division of Electrotechnology and Materials Science, Wrocław, Poland
Functions of Eu(3+) Ions in Materials with CdS Nanoparticles and Oxide Matrices
A. M. Kłonkowski, I. Szałkowska
Faculty of Chemistry, University of Gdańsk, Gdańsk, Poland
HBV Deep Mesa Etching in the InGaAs/InAlAs/AlAs Heterostructure over InP Substrate
M. Górska, H. Wrzesińska, A. Szerling, K. Hejduk, J.M. Łysko
Institute of Electron Technology, Warsaw, Poland
Grain Refinement In Aluminium and Aluminium Alloy by Hydrostatic Extrusion Method
M. Lewandowska1, H. Garbacz1, W. Pachla2, A. Mazur2, K.J. Kurzydłowski1
1Warsaw University of Technology, Faculty of Materials Science and Engineering, Warsaw, Poland
2Institute of High Pressure Physics, Polish Academy of Science, Warsaw, Poland
Sol-gel Derived Li-ion Conducting Polymer Electrolytes
E. Żelazowska1, E. Rysiakiewicz-Pasek2, M. Borczuch-Łączka3
1Institute of Glass and Ceramics, Cracow Branch, Cracow, Poland
2Institute of Physics, Wrocław University of Technology, Wrocław, Poland
3Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Cracow, Poland
The Sol-gel Synthesis of Bismuth Titanate Electroceramic Thin Films
A. Zarycka, A. Lisińska-Czekaj, J. Czuber, T. Orkisz, J. Ilczuk, D. Czekaj
University of Silesia, Department of Materials Science, Sosnowiec, Poland
Internal Friction Related to The Mobility of Domain Walls in Sol-gel Derived PZT Ceramics
A. Zarycka, R. Zachariasz, J. Ilczuk, A. Chrobak
University of Silesia, Faculty of Computer and Materials Sciences, Department of Materials Science, Sosnowiec, Poland
Textural Properties of Silica-based Organic-Inorganic Polymer Hybrid Xerogels
I. Zaręba-Gródź1, W. Miśta2, A. Sikora3,
T. Gotszalk3, W. Stręk2, K. Hermanowicz2, K. Maruszewski1
1Institute of Materials Science and Applied Mechanics, Wrocław University of Technology, Wrocław, Poland
2Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
3Laboratory of Near Field Microscopy, Nanometrics and Nanostructures,
Wrocław University of Technology, Wrocław, Poland
The Effect of Heat Treatment of TiO2 Coatings Obtained by The Sol-gel Method on The Corrosion Resistance of Chromium Steel
E. Szałkowska1, J. Masalski2, B. Kucharska3,
J. Głuszek2
1Department of Chemistry, Częstochowa University of Technology, Częstochowa, Poland
2Institute of Inorganic Technology and Mineral Fertilizers, Wrocław University of Technology, Wrocław, Poland
3Institute of Materials Engineering, Częstochowa University of Technology, Częstochowa, Poland
Bioactive Glass Coatings
R. Sindut1, K. Cholewa-Kowalska1, J. Nejman2,
M. Łączka1, M. Karpov3, A.M. Osyczka3, P. Leboy3
1AGH-University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Glass Technology and Amorphous Coating, Cracow, Poland
2Cracow University of Technology, Faculty of Chemical Engineering
and Technology, Cracow, Poland
3University of Pennsylvania, Philadelphia, 19104 PA, USA
Spectroscopic Properties of a Chlorophyll-based Photosensitive Dye Entrapped in Sol-gel Fibre-optic Applicators
A. Ulatowska-Jarża1, U. Binding2, H. Podbielska1,3,
I. Hołowacz1, W. Stręk4, G. Müller5, H.J. Eichler2,3
1Bio-Optics Group, Institute of Physics, Wrocław University of Technology, Wrocław, Poland
2Laser-und Medizin-Technologie GmbH, Berlin, Germany
3Institute of Optics, Technical University Berlin, Berlin, Germany
4Institute of Low Temperature and Structure Research, Polish Academy of Science, Wrocław, Poland
5Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Institute of Laser Physics and Laser Medicine, Freie University Berlin, Berlin, Germany
Formation of Nanostructures with a Controlled Size Distribution in Si-based Gels by Ion Irradiation
J.-C. Pivin
C.S.N.S.M., Orsay Campus, France
Electrical and Mechanical Properties of Nitrided Sol-gel Derived TiO2 and SiO2-TiO2 films
B. Kościelska, L. Murawski, L. Wicikowski
Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gdańsk, Poland
Synthesis of Magnetic Nanoparticles Via The Sol-gel Technique
R. Kornak1, D. D. Nižňanský1, K. Haiman1,
W. Tylus3, K. Maruszewski1
1Wroclaw University of Technology, Institute of Materials Science
and Applied Mechanics, Wroclaw, Poland
2Department of Inorganic Chemistry, Faculty of Natural Sciences of Charles University, Prague, Czech Republic
3Wrocław University of Technology, Institute of Inorganic Technology, Wrocław, Poland
Application of Image Analysis for Characterization of Powders
J, Michalski1, T. Wejrzanowski1, R. Pielaszek2,
K. Konopka1, W. Łojkowski2, K.J. Kurzydłowski1
1Warsaw University of Technology, Faculty of Materials Science and Engineering, Warsaw, Poland
2High Pressure Research Center of the Polish Academy of Science, Warsaw, Poland
Design of Molecular Structure and Synthetic Approaches to Single-source Precursors in The Sol-gel Technology
V.G. Kessler1, G.M. Seisenbaeva1, P. Werndrup1,
S. Parola2, G.I. Spijksma3
1Department of Chemistry, Uppsala, Sweden
2Laboratoire des Multimatériaux et Interfaces, Université Claude Bernard, Villeurbanne, France
3Inorganic Materials Science, Faculty of Science & Technology, and Mesa+ Research Institute
for Nanotechnology, University of Twente, Enschede, The Netherlands
Carbon-silica Sol-gel Derived Nanomaterials
T. Hübert, A. Shimamura, A. Klyszcz
Bundesanstalt für Materialforschung und -prüfung (BAM), Germany
Incorporation of Zirconia and Germania and Ternary Compounds of ZrO2-GeO2
V.S. Gurin1, A.A. Alexeenko2, K.K. Kasparov3,
E.A. Tyavlovskaya3
1Physico-Chemical Research Institute, BSU, Minsk, Belarus
2Institute of Electronics, National Academy of Sciences of Belarus, Minsk, Belarus
3Gomel State Technical University, Belarus
Raman System for Monitoring Dye Doping
M. Gnyba1, M. Keränen2
1Gdańsk University of Technology, Department of Optoelectronics, Gdańsk, Poland
2VTT Electronics, Oulu, Finland
Raman Investigation of Hybrid Polymer Thin Films
M. Gnyba1, M. Keränen2, M. Kozanecki3,
B.B. Kosmowski1
1Gdańsk University of Technology, Department of Optoelectronics, Gdańsk, Poland
2VTT Electronics, Oulu, Finland
3Technical University of Łódź, Department of Molecular Physics, Łódź, Poland
The Effect of Poly(ethylene glycol) on The Crystallisation and Phase Transitions of Nanocrystalline TiO2 Thin Films
Y. Djaoued1, J. Robichaud1, R. Brüning2,
A.-S. Albert1, P.V. Ashrit3
1Université de Moncton - Campus de Shippagan, Shippagan, Canada
2Physics Department, Mount Allison University, Sackville, Canada
3Département de physique et d?astronomie, Université de Moncton, Moncton, Canada
Quantum Confinement Effect of In-situ Generated Cu2O in a Nanostructured Zirconia Matrix
S. Kundu, S. Jana, P.K.Biswas
Sol-Gel Division, Central Glass and Ceramic Research Institute, Kolkata, India
