Zobrazeno 1 - 10
of 140
pro vyhledávání: '"J. Pleštil"'
Publikováno v:
Journal of Applied Crystallography. Aug2003, Vol. 36 Issue 4, p970. 6p.
Autor:
Yu. B. Melnichenko, George D. Wignall, J. Pleštil, Karel Procházka, Zdeněk Tuzar, Stephen E. Webber, Maria Ruela Talingting, Jaroslav Kříž, Petr Munk
Publikováno v:
Macromolecular Chemistry and Physics. 202:553-563
Onion-type block copolymer micelles were prepared drom polystrene-block-poly(2-vinylpridine) (PS-b-PVP) inner micelles in an acidic solution by basyfyting in the presence of polystrene-block-poly(2-vinylpridine)-block-poly(ethylene oxide) (PVP-b-PEO)
Publikováno v:
Journal of Materials Science. 35:2625-2633
The Al-Zr-Ti system has recently been suggested as a candidate for Al-based materials capable of retaining a high strength during a long term exposure to high temperatures up to 700 K. The Al-1.25 at.% (Zr+Ti) alloys with a variable Zr : Ti ratio wer
Publikováno v:
Polymer. 33:3675-3685
When selective solvents are used for the dissolution of block copolymers, their solid-state structure may be partly preserved in solution. At room temperature, polystyrene- block -poly(ethylene- co -propylene) dissolves in decane, a selective solvent
Publikováno v:
Journal of Applied Crystallography. 24:659-664
Surprisingly, molecular weight can be determined from small-angle scattering data without using absolute intensities and the contrast factor. The formula underlying this novel procedure is illustrated by model calculations. Several examples of the su
Autor:
J. Pleštil, J. Baldrian
Publikováno v:
Acta Polymerica. 42:137-140
The effect of the annealing temperature on the structure of unoriented polyamide 6 was studied by swelling in methanol and small-angle X-ray scattering. The observed values of mean-square fluctuations of scattering density can be explained by using a
Publikováno v:
Polymer. 32:3313-3316
Blends of semicrystalline isotactic polypropylene (iPP) with two types of elastomer, butadiene/styrene (BS) and hydrogenated isoprene/styrene (HIS), block copolymers were investigated by means of wide-angle and small-angle X-ray scattering. Except fo
Publikováno v:
Polymer. 31:2112-2117
Solutions of a triblock copolymer, polystyrene- block -poly(hydrogenated butadiene)- block -polystyrene, in a selective solvent either for the aliphatic middle block (heptane) or for the polystyrene outer blocks (1,4-dioxane/25 vol% heptane) were stu
Publikováno v:
Polymer. 31:2118-2124
Micellar solutions of a triblock copolymer polystyrene- block -poly(hydrogenated butadiene)- block -polystyrene, in heptane and in 1,4- dioxane 25 vol % heptane have been studied by light scattering and sedimentation velocity methods. In dilute solut
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