Reactions with competition in the three-component polymer system aerosil surface-copolymer of styrene and maleic acid-polyoxyethylene

Zheltonozhskaya, Tatyana; Yeremenko, Bohdan; Nuzhdina, Yu. A.; Uskov, I.A.

doi:10.1016/0032-3950(87)90338-8

Cited by 1 publication

(2 citation statements)

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“…8(b) and Table 3 of their contact, (iii) the PEO molecular weight, and (iv) the presence of low-molecular-weight electrolyte affected the final state of the system SiO 2 +PSMA+PEO with polydispersed colloidal particles considerably. 28,74,80,85,86 Due to the two first factors, this system could not be considered as one in equilibrium.…”

Section: ) Interpc (Psma+peo)mentioning

confidence: 96%

“…5 and 8(a), and also Table 2) were obtained investigating the supernatants by potentiometric titration, viscometry and IR spectroscopy. 74,80,85,86 Only an insignificant part of PSMA was adsorbed by large aggregated SiO 2 particles and proved to be in sediment (see the β parameter in Table 2 conclusion was confirmed by: (i) destruction of the initial compact structure of PSMA at once after its minimum contact with silica particles (Fig. 8(a), curve 2), (ii) increase in the reduced viscosity of PSMA in supernatants as compared to pure polyacid solutions of equal concentration ( Table 2), and (iii) identification of hydrogen bonds between PSMA and SiO 2 (Fig.…”

Section: ) Interpc (Psma+peo)mentioning

confidence: 98%

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Inter- And Intramolecular Polycomplexes in Polydispersed Colloidal Systems

Zheltonozhskaya

Permyakova

Eremenko

2009

Hydrogen-Bonded Interpolymer Complexes

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Problems of stability in polymer-colloidal systems are discussed from the viewpoints of classical colloidal chemistry, macromolecular chemistry and statistical physics. The special situation in the systems containing polydispersed colloidal particles is highlighted. The behavior of the InterPC (PSMA+PEO) composed of poly(styrene-altmaleic acid) and poly(ethylene oxide), and also of the IntraPC (PVAPAAm) formed in the poly(vinyl alcohol)-graft-polyacrylamide copolymers in mono-and polydispersed silica/water suspensions is considered in order to explain the fact of a principally higher flocculating capability of polycomplexes as compared with individual polymer components. The approaches of colloidal and macromolecular chemistry are used in conjunction in these studies. The development of complicated non-equilibrium competitive processes in the ternary systems containing chemically complementary polymer components and polydispersed colloidal particles is demonstrated. The existence of an additional thermodynamic factor of attraction between large micrometer-scale particles covered by adsorption layers of polycomplexes and between triple polymer-colloidal complexes formed by both polymer components and nanoparticles is shown.

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Section: ) Interpc (Psma+peo)mentioning

confidence: 96%

Section: ) Interpc (Psma+peo)mentioning

confidence: 98%