Zobrazeno 1 - 10
of 122
pro vyhledávání: '"A.I. Maklakov"'
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 115:107-114
Polar and non-polar liquids in porous glasses have been studied by proton and deuteron field-cycling NMR relaxometry. The mean pore diameters were 4 nm, 30 nm and 208 nm. The frequency dependence of the spin-lattice relaxation time T1 is strongly inf
Autor:
A.I. Maklakov, I. A. Serebrennikova, N.F. Fatkullin, F. Klammler, Vladimir D. Skirda, Rainer Kimmich
Publikováno v:
Applied Magnetic Resonance. 4:425-440
Geometrical restrictions of water diffusion in different aqueous protein systems were studied using two versions of the NMR field gradient technique. The samples were aqueous systems of bovine serum albumin, gelatin and horse myoglobin at concentrati
Publikováno v:
Applied Magnetic Resonance. 2:83-91
Self-diffusion of alkanes in kaolinite has been explored by pulsed field gradient nuclear magnetic resonance. The concentration dependences of average self-diffusion coefficient (SDC) of liquid have been studied in the wide temperature interval (T=25
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Publikováno v:
Magnetic resonance imaging. 14(7-8)
Diffusion coefficients of 10 different polar and nonpolar liquids filled in porous glasses with mean pore diameters of 4 or 30 nm were determined with the aid of the NMR field-gradient technique. In the time scale of these experiments (0.3 to 500 ms)
Publikováno v:
Polymer Science U.S.S.R.. 20:1492-1498
It was found that the rotational motion of plasticizer molecules in the polymer matrix is hindered, the degree of hindrance differing for different molecules. With use of the data on the dibutyl phthalate (DBP) autodiffusion it was possible to evalua
Publikováno v:
Polymer Science U.S.S.R.. 28:741-746
The thickness of the degraded surface layer in γ-irradiated low density polyethylene (LDPE) and the total dose have been determined. This was done either by NMR measurements or by measuring self-diffusion coefficients of the macromolecules (by a pul
Autor:
A.I. Maklakov, V.A. Tyurin
Publikováno v:
Polymer Science U.S.S.R.. 31:2455-2461
The uniaxial stretching of samples of PVC plasticized by di-2-ethylhexyl sebacate retards the molecular mobility of the plasticizer inducing its anisotropy. This leads to complication of the form of the decay of transverse nuclear magnetizability, in
Autor:
A.I. Maklakov, Yu.A. Kuznetsov, N.A. Kapitonova, G.N. Marchenko, N.V. Mikheleva, V.M. Oreshnikov, G.G. Pimenov
Publikováno v:
Polymer Science U.S.S.R.. 22:1662-1669
The lateral NMR-relaxation of acetone has been studied on cellulose nitrate (CN) concentrates containing 11·9 and 13·13·5% nitrogen in the - 100 to 80°C range. Multi-impulse experiments have shown the proton relaxation of the solvent to depend on
Publikováno v:
Polymer Science U.S.S.R.. 19:367-370
Impulse NMR has been used to study the crystallization conditions of oligoethylene- and oligo-butylene adipates as a function of the melt temperature at constant crystallization temperature. Residual crystal structures have been found in the melts ab