Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Dan DONESCU"'
Autor:
Dan Donescu, Catalin Ilie Spataru, Constantin Radovici, Roxana Trusca, Raluca Somoghi, Denis Mihaela Panaitescu, Adriana Nicoleta Frone
Publikováno v:
BioResources, Vol 6, Iss 1, Pp 487-512 (2011)
Cellulose nanofibers were obtained from microcrystalline cellulose (MCC) by the action of hydrodynamic forces associated with ultrasound. Nanofibers isolated from MCC by applying different ultrasonication conditions were characterized to elucidate th
Externí odkaz:
https://doaj.org/article/d30e325dadfc4693911b32ee26d4f8ee
Autor:
Liviu DUMITRACHE, Zina VULUGA, Dan DONESCU, Lavinia GAVRILA-FLORESCU, Sorina GAMAN, Ana STAN, Adriana STEFAN, Ion DINCA, Gabriel PRODAN
Publikováno v:
INCAS Bulletin, Vol 1, Iss 1, Pp 37-42 (2009)
Polymer nanocomposites (PNCs) ,namely, nanoparticles dispersed in a polymer matrix, have garnered academic and industrial interest since 1990.This is due to the very attractive properties of nanostructurated fillers, as carbon nanotubes, laser synthe
Externí odkaz:
https://doaj.org/article/b3b9396ded8549ec89ec1fb42b42791e
Autor:
Cristian Petcu, Violeta Purcar, Cătălin-Ilie Spătaru, Elvira Alexandrescu, Raluca Şomoghi, Bogdan Trică, Sabina Georgiana Niţu, Denis Mihaela Panaitescu, Dan Donescu, Maria-Luiza Jecu
Publikováno v:
Nanomaterials, Vol 7, Iss 2, p 47 (2017)
Ultra-hydrophobic bilayer coatings on a glass surface were fabricated by sol–gel process using hexadecyltrimethoxysilane (C16TMS) and tetramethoxysilane (TMOS) (1:4 molar ratio) as precursors. After coating, silica nanoparticles (SiO2 NPs) function
Externí odkaz:
https://doaj.org/article/a0e4ff0004bb4e728df813b52425046b
Autor:
Cristina Lavinia Nistor, Raluca Ianchis, Marius Ghiurea, Cristian-Andi Nicolae, Catalin-Ilie Spataru, Daniela Cristina Culita, Jeanina Pandele Cusu, Victor Fruth, Florin Oancea, Dan Donescu
Publikováno v:
Nanomaterials, Vol 6, Iss 1, p 9 (2016)
The present study describes for the first time the synthesis of silica nanoparticles starting from sodium silicate and oleic acid (OLA). The interactions between OLA and sodium silicate require an optimal OLA/OLANa molar ratio able to generate vesicl
Externí odkaz:
https://doaj.org/article/f761a098c46a422c82906757ccc53287
Autor:
Simona, Caprarescu, Raluca, Ianchis, Anita-Laura, Radu, Andrei, Sarbu, Raluca, Somoghi, Bogdan, Trica, Elvira, Alexandrescu, Catalin-Ilie, Spataru, Radu Claudiu, Fierascu, Daniela, Ion-Ebrasu, Silviu, Preda, Leonard-Ionut, Atanase, Dan, Donescu
Publikováno v:
In Applied Clay Science 1 March 2017 137:135-142
Autor:
Catalin Ilie Spataru, Valentin Raditoiu, Raluca Somoghi, Marius Ghiurea, Dan Donescu, Nicolae Stanica, Eugeniu Vasile, Cristian Andi Nicolae, Radu Claudiu Fierascu, Doina Manaila-Maximean
Publikováno v:
Applied Surface Science. 414:8-17
The present paper studies the effect of polyaniline grafting on magnetite functionalized with aminopropyltrimethoxysilane. All the compounds were characterized by analytical techniques (X-ray fluorescence, X-ray diffraction, Fourier transform infrare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c7dbf2527babc86650333240eba65a9
https://doi.org/10.1016/j.apsusc.2017.04.061
https://doi.org/10.1016/j.apsusc.2017.04.061
Autor:
Catalin-Ilie Spataru, Adriana Nicoleta Frone, H. Stroescu, Raluca Ianchis, Bogdan Trica, Cristian Andi Nicolae, Violeta Purcar, Marius Ghiurea, Cristian Petcu, Leonard-Ionuţ Atanase, Dan Donescu
Publikováno v:
Applied Surface Science. 389:666-672
Sol-gel derived organic-inorganic hybrid systems were obtained by applying alkaline-catalyzed co-hydrolysis and copolycondensation reactions of tetraethoxysilane (TEOS), methyltriethoxysilane (MTES), isobutyltriethoxysilane (IBTES), diethoxydimethyls
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94341638f17ec79be94b4bacefd534ec
https://doi.org/10.1016/j.apsusc.2016.07.076
https://doi.org/10.1016/j.apsusc.2016.07.076
Autor:
Ana Mihaela Florea, Andrei Sarbu, Tanta-Verona Iordache, Dan Donescu, Anamaria Zaharia, Anita-Laura Radu
Publikováno v:
Journal of Sol-Gel Science and Technology. 76:529-541
This paper debates the effect of the stabilizer (vinyl benzyl trimethyl ammonium chloride—VBTAC or cetyl trimethyl ammonium chloride—CTAC) and the structure (typical SiO2 matrix or inorganic–organic interpenetrated matrix) influence in molecula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f06400590f1e340a90185fa1ec0b329f
https://doi.org/10.1007/s10971-015-3803-4
https://doi.org/10.1007/s10971-015-3803-4
Autor:
Catalin Ilie Spataru, Marius Ghiurea, Dan F. Anghel, Mihaela Baibarac, Gabriela Stîngă, Dan Donescu, Ioan Baltog
Publikováno v:
Colloid and Polymer Science. 293:2515-2524
The radical polymerization of aniline hydrochloride (ANIHCl) in the presence of ammonium persulfate was studied. 1D-Polyaniline (PANI) with fibrillar morphologies was obtained in the presence of anionic surfactants. The changes of the PANI-template s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::316dcbebecec5bf05150d11dd0b04bfe
https://doi.org/10.1007/s00396-015-3645-1
https://doi.org/10.1007/s00396-015-3645-1
Autor:
Stefan-Ovidiu Dima, Cristian Andi Nicolae, Victor-Alexandru Faraon, Walid Meouche, Dan Donescu, Olga Chetraru, Tanţa-Verona Iordache
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 120:1107-1118
Thermogravimetric analysis (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), dynamic mechanical thermal analysis, simultaneous differential thermogravimetry (SDT) coupled with mass spectrometry (MS), and pyrolysis coup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e030ee35dc30eb4fbe28c173c99e3301
https://doi.org/10.1007/s10973-015-4455-x
https://doi.org/10.1007/s10973-015-4455-x