Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Virgil Barboiu"'
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 4, Iss 1, Pp 97-102 (2009)
A Schiff base macrocycle with persistent rhomboidal shape was synthesized in excellent yield through [2+2] condensation reaction between (R,R)-1,2-diaminocyclohexane and 4,4’-diformyltriphenylamine. The dimeric macrocylic structure was proved by el
Externí odkaz:
https://doaj.org/article/d813619d7dec4475aed74c59f95f8e1e
Chain microstructure and conformation of partially quaternized poly(dimethylaminoethyl methacrylate)
Autor:
Ecaterina Stela Dragan, Elena Rusu, Gabriela Liliana Ailiesei, Anca Giorgiana Grigoras, Virgil Barboiu
Publikováno v:
International Journal of Polymer Analysis and Characterization. 24:610-618
1H-NMR spectroscopy was used to establish the chain microstructure and conformation produced by the quaternization reaction of syndiotactic poly[2-(dimethylamino)ethyl methacrylate], a polymer with tertiary amino groups in the side chains. A chain mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ec846351cac61de879a944b2d566034
https://doi.org/10.1080/1023666x.2019.1642431
https://doi.org/10.1080/1023666x.2019.1642431
Publikováno v:
Journal of Molecular Liquids. 229:362-370
New photoactive copolysulfones carrying azo crown ether moieties in the main chain were prepared by polycondensation reaction of 4,4′-bis(4-hydroxyphenylazo)dibenzo-18-crown-6, bisphenol A, and bis(4-chlorophenyl)sulfone. The azo polysulfones were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e963d04cf218a39164b31ab8b86671d
https://doi.org/10.1016/j.molliq.2016.12.076
https://doi.org/10.1016/j.molliq.2016.12.076
Publikováno v:
Reactive and Functional Polymers. 161:104852
Using the effects of solvent polarity observed on the microstructure of reaction products and the viscosity of the reaction medium, the evolution of the polymer chain conformation when the conversion changes, as well as the corresponding reaction kin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9042825c2032e53484b36c7d4a93a32
https://doi.org/10.1016/j.reactfunctpolym.2021.104852
https://doi.org/10.1016/j.reactfunctpolym.2021.104852
Publikováno v:
Scanning. 37:335-349
Summary Several atomic force microscopy (AFM) tests have been carried out on both smooth (polyimide) and rough (polyurethane) surfaces so that to obtain the best results; subsequently, the optimization of experiments performed is presented. A special
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6609d30b3f12b6ed4e718b1653cbae72
https://doi.org/10.1002/sca.21216
https://doi.org/10.1002/sca.21216
Publikováno v:
Open Chemistry, Vol 10, Iss 2, Pp 313-319 (2012)
Charge transfer interactions in mixtures of poly(9-vinylcarbazole) with three nitro compounds (4,4′dinitrodibenzyl, ethyl 3,5-dinitrobenzoate and 2,2′,4,4′-tetranitrodibenzyl) were examined. GPC shows an increase of apparent polymer weight aver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dd216bfccc136e2c65744be9fb27ab8
https://doaj.org/article/5b9d8128bb6340df88b6cb17d8068d2e
https://doaj.org/article/5b9d8128bb6340df88b6cb17d8068d2e
Autor:
Virgil Barboiu, Mihaela Avadanei
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 222:170-179
The photolysis of benzophenone (BP) in 1,2-polybutadiene (1,2PB) was studied at low radiation intensity in order to clarify some aspects of BP photochemistry and of 1,2PB photocrosslinking. The expected primary photoreactions of hydrogen abstraction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2b017b2f5a7918da033a1c4e990a64d
https://doi.org/10.1016/j.jphotochem.2011.05.018
https://doi.org/10.1016/j.jphotochem.2011.05.018
Publikováno v:
Polymer Journal. 43:613-620
A family of segmented polyurethane elastomers (SPUs) was synthesized. Hard segments were chosen to be generated from two isocyanates: the rigid 4,4-diphenylmethane diisocyanate (MDI) and the flexible 4,4-dibenzyl diisocyanate (DBDI), alone or as mixt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcce8c45ac24bbb81695a822cffe365b
https://doi.org/10.1038/pj.2011.23
https://doi.org/10.1038/pj.2011.23
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 48:5456-5467
Surface of biaxially oriented poly(ethylene terephthalate) films was chemically modified by exposure to ethylenediamine (EDA), triethylenetetramine (TETA), and tetraethylenepentamine (TEPA) for different treatment times. Variable angle attenuated tot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afb94775a956bd8584d06dce9f51dae1
https://doi.org/10.1002/pola.24354
https://doi.org/10.1002/pola.24354
Publikováno v:
Journal of the Brazilian Chemical Society v.21 n.3 2010
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 21, Issue: 3, Pages: 489-495, Published: 2010
Scopus-Elsevier
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 21, Issue: 3, Pages: 489-495, Published: 2010
Scopus-Elsevier
Polymer matrices with aromatic main chain and side chain linked units (polystyrene, polysulfone) were employed to construct thin films containing maleimidoazobenzene molecules in order to develop new materials with responsive properties. The photochr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8b6e4f2901d30791d9444f13b02e9e2
https://doi.org/10.1590/s0103-50532010000300014
https://doi.org/10.1590/s0103-50532010000300014