Zobrazeno 1 - 10
of 61
pro vyhledávání: '"E. FRANTA"'
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 56:139-148
Oxocarbenium ions associated to a stable counterion SbF6− were used to initiate the polymerization of tetrahydrofuran; mono-, di-, and trifunctional initiators were prepared. They proceed by addition onto the monomer with formation of an ester grou
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 4:473-489
Publikováno v:
Macromolecules. 27:3963-3972
The conformation of poly(1,3-dioxolane) (PDXL) in aqueous solution was studied by light and neutron scattering, by SEC coupled with light scattering, and by viscosimetry. In the absence of salt, the solutions contain aggregates which cannot be elimin
Publikováno v:
Journal of Colloid and Interface Science. 164:428-438
The interactions between poly(1,3-dioxolane) and sodium dodecyl sulfate (SDS) were studied by conductimetry, viscosimetry, and fluorescence and compared to the results obtained for polyethyleneoxide (PEO). It was shown that SDS is bound onto the poly
Publikováno v:
Macromolecules. 25:5697-5704
The phase diagram of a polydioxolane sample (M w =50 000) in aqueous solutions was constructed between -100 and +100°C in the whole range of composition. The solubility domain is limited at higher temperature by the demixing curve (lower critical so
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 67:187-188
Publikováno v:
Polymer Bulletin. :83-89
Unsaturated oxocarbenium salts were used to initiate the polymerization of THF. The macromers obtained were characterized carefully, and it was found that these species are well defined, of narrow molecular weight distribution, and fitted quantitativ
Publikováno v:
Colloid & Polymer Science. 264:676-682
Two series of poly(acrylamide-co-acrylates) with compositions rangingfrom 10 to 55 mol % acrylate units were prepared by radical polymerization in inverse microemulsions. The compositional analyses of the samples were performed using elemental analys
Publikováno v:
Polymer Science U.S.S.R.. 21:2793-2809
This report gives a classification of methods for the preparation of block and graft copolymers according to types of active centres. Particular attention is paid to methods comprising two stages of different types of polymerization with active centr
Publikováno v:
European Polymer Journal. 15:11-20
Resume Quelques oligomeres dicarbanioniques du styrene et de l'α-methylstyrene ont ete caracterises ainsi que leurs composes protones correspondants. Le coefficient d'extinction et la constante de dissociation ionique a 25° ont ete determines sur l