Thermal, spectral and AFM studies of calcium silicate hydrate-polymer nanocomposite material

Mojumdar, S. C.; Raki, Laïla; Mathis, N.; Schimdt, K.; Lang, Sidney B.

doi:10.1007/s10973-005-7354-8

Cited by 52 publications

(9 citation statements)

References 45 publications

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“…The weight loss as a function of temperature showed a pattern similar to that reported in the literature for C-S-H [27,28]. The morphological examination of the particles precipitated showed that it consisted of 15-10 nm particles regardless of the pH investigated, as may be seen from the SEM pictures shown in figure 11.…”

Section: Table 2 Precipitation Of C-s-h From Aqueous Supersaturated Ssupporting

confidence: 83%

Spontaneous precipitation of calcium silicate hydrate in aqueous solutions

Ntafalias

Koutsoukos²

2009

Cryst. Res. Technol.

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Key words calcium silicate hydrate, precipitation, kinetics. PACS 81.10.Dn Calcium silicate hydrates (C-S-H) are very important not only for their contribution to the development of cement and concrete properties but also for use as fillers and in silicate glasses. In the present work, the thermodynamics and the kinetics of the spontaneous precipitation of C-S-H from aqueous solutions were investigated over the pH range 10-12 at 25 °C. The thermodynamic driving force was calculated taking into consideration all equilibria involved in the supersaturated solutions. In the range of the solution supersaturation values examined the precipitation occurred spontaneously, with the exception of the series of experiments done at pH 12.0, where induction times preceded the appearance of the precipitate. The rates were measured at constant pH as a function of the solution supersaturation and were found to depend strongly on the solution supersaturation, pH and on the total calcium to total silicate molar ratio in solution. Fit of the kinetics results in a power law relating rates of precipitation with respect to C-S-H precipitated, suggested a surface diffusion controlled mechanism for the formation of C-S-H. The precipitated solids did not show significant morphological differences at different pH values. From the induction times preceding the spontaneous precipitation at pH 12.0, a value of 30 mJm -2 was calculated for the surface energy of C-S-H.

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Section: Table 2 Precipitation Of C-s-h From Aqueous Supersaturated Ssupporting

confidence: 83%

Spontaneous precipitation of calcium silicate hydrate in aqueous solutions

Ntafalias

Koutsoukos²

2009

Cryst. Res. Technol.

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“…The first C-S-H/polymer nanocomposites were successfully synthesized by Matsuyama and Young [3][4][5][6][7], followed by Mojumdar and Raki [8,9], Mojumdar et al [10] and Beaudoin et al [2]. The authors tested cationic (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of poly(diallyldimethylammonium chloride) on nanostructure and mechanical properties of calcium silicate hydrate

Pelisser

Gleize

Mikowski

2010

Materials Science and Engineering: A

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“…For example, λ эксп for PVA is reported to be 0.20 W/(m K) [43] and 0.1063 W/(m K) [44]. The thermal conductivity correlation diagram is presented in Fig.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Methods for calculating the physical properties of polymers

Аскадский

2015

Ref. J. Chem.

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The approaches that derive the best predictions of physical properties of polymers from the chemical structure of their repeating unit are the van Krevelen, Bicerano, and Askadskii-Matveev. The potential of these three approaches is analyzed. All of the approaches are computerized and allow online predictions to be made. The PDTools and SYNTHIA programs are briefly overviewed, and the Cascade software (developed at the Nesmeyanov Institute of Organoelement Compounds) is described in detail. All of the approaches and the corresponding computer programs make it possible to estimate over 120 physical properties of polymers, including their volumetric, thermal, mechanical, thermophysical, optical, dielectric, and barrier properties. Particular attention is focused on the solu bility and miscibility of polymers and on the properties of copolymers, polymer blends, and nanocom posites. The Cascade software provides the means to carry out computer syntheses of polymers with preset properties, the intervals of which are input by the user, and to calculate the dependences of these properties on temperature, plasticizer and nanoparticle concentrations, and nanoparticle size and shape.

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Thermal, spectral and AFM studies of calcium silicate hydrate-polymer nanocomposite material

Cited by 52 publications

References 45 publications

Spontaneous precipitation of calcium silicate hydrate in aqueous solutions

Spontaneous precipitation of calcium silicate hydrate in aqueous solutions

Effect of poly(diallyldimethylammonium chloride) on nanostructure and mechanical properties of calcium silicate hydrate

Methods for calculating the physical properties of polymers

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