Zobrazeno 1 - 10
of 37
pro vyhledávání: '"K.G. Khabarova"'
Publikováno v:
Fibre Chemistry. 24:109-114
One-, two-, and three-stage methods of preparing structurally-dyed aromatic polyamides with chromophoric fragments in the chain have been investigated.
Autor:
N. I. Kuz'min, N. N. Barashkov, Yu.Yu. Yakovlev, R.N. Nurmukhamedov, V. G. Klimenko, K.G. Khabarova
Publikováno v:
Polymer Degradation and Stability. 37:115-124
Mono-, di- and tri-stage methods of copolycondensation of mixtures of m-phenylenediamine and diaminoanthraquinones with isophthaloyl chloride have been studied. The fraction of bound chromophore diamine and the molecular mass of the copolyamides form
Autor:
V.V. Selikhov, N. I. Kuz'min, N. N. Barashkov, Yu. Yu. Yakovlev, K.G. Khabarova, V. G. Klimenko, R. N. Nurmukhametov, V.B. Ivanov
Publikováno v:
Polymer Science U.S.S.R.. 33:945-953
The absorption and fluorescence spectra of solutions and films of polymetaphenyleneisophthalamide with fragments of diaminoanthraquinones in the chain, and also aminobenzoylamino and dibenzoylamino derivatives modifying the chromophoric groups of the
Publikováno v:
Polymer Science U.S.S.R.. 18:883-892
The distribution q∗ (S, t) (S is the sedimentation coefficient, t, time) to infinite time, followed by extrapolation of the q(S) curves to zero concentration, have been calculated for various systems. Criss-cross hydrodynamic interactions (of the J
Publikováno v:
Polymer Science U.S.S.R.. 22:410-416
Poly-4,4′-diphenylphthaleinterephthalamide has been fractionated into 19 fractions in the system DMF (solvent)-ethanol (sedimentator), using the successive sedimentations method. A special method for determining sedimentation boundary dispersion wa
Publikováno v:
Polymer Science U.S.S.R.. 20:2240-2246
The ultracentrifugation results of poly-4,4-diphenylphthalein terephthalamide fractions in DMF and of two samples of PAN in DMF-THF and DMF-methanol have been processed according to the Fujita and Dishon et al. theories which are based on the analysi
Publikováno v:
Polymer Science U.S.S.R.. 22:699-707
The intrinsic viscosities [η] and sedimentation constants S0 have been determined for poly-(4,4′-diphenylphthalein) terephthalamide (PPPTA) fractions in DMF, as well as in a binary θ-solvent (DMF:cryclohexanol=60:40 wt.%). Weight average molecula
Publikováno v:
Polymer Science U.S.S.R.. 14:963-970
Publikováno v:
Polymer Science U.S.S.R.. 6:1766-1773
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