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Open AccessArticle

A Study of Calcium-Silicate-Hydrate/Polymer Nanocomposites Fabricated Using the Layer-By-Layer Method

Department of Civil, Architectural and Environmental Engineering, University of Miami, Coral Gables, FL 33146, USA
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Materials 2018, 11(4), 527; https://doi.org/10.3390/ma11040527
Received: 10 February 2018 / Revised: 15 March 2018 / Accepted: 24 March 2018 / Published: 30 March 2018
(This article belongs to the Section Structure Analysis and Characterization)
Calcium-silicate-hydrate (CSH)/polymer nanocomposites were synthesized with the layer-by-layer (LBL) method, and their morphology and mechanical properties were investigated using atomic force microscopy (AFM) imaging and AFM nanoindentation. Different sets of polymers were used to produce CSH/polymer nanocomposites. The effect of different factors including dipping time, calcium to silicate ratios (C/S ratios) and pH on morphology was investigated. CSH/polymer nanocomposites made with different sets of polymers showed variation in morphologies. However, the Young’s modulus did not seem to reveal significant differences between the nanocomposites studied here. In nanocomposites containing graphene oxide (GO) nanosheet, an increase in the density of CSH particles was observed on the GO nanosheet compared to areas away from the GO nanosheet, providing evidence for improved nucleation of CSH in the presence of GO nanosheets. An increase in roughness and a reduction in the packing density in nanocomposites containing GO nanosheets was observed. View Full-Text
Keywords: CSH; LBL; AFM image; polymer CSH; LBL; AFM image; polymer
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Kamali, M.; Ghahremaninezhad, A. A Study of Calcium-Silicate-Hydrate/Polymer Nanocomposites Fabricated Using the Layer-By-Layer Method. Materials 2018, 11, 527.

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