Synthesis of calcium silicate hydrate/polymer nanocomposites

Title: Synthesis of calcium silicate hydrate/polymer nanocomposites
Author(s): Subhash C. Mojumdar, Laila Raki
Paper category : conference
Book title: NICOM 2: 2nd International Symposium on Nanotechnology in Construction
Editor(s): Y. de Miguel, A. Porro and P.J.M. Bartos
Print-ISBN: 2-912143-87-X
e-ISBN: 2912143888
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 107 - 114
Total Pages: 8
Nb references: 27
Language: English

Abstract: Nanocomposite from different organic polymers [Poly(vinyl alcohol (PVA) and Poly(acrylic acid) (PAA)], and calcium silicate hydrate (C-S-H) were prepared by co-precipitation techniques at 60 °C, under nitrogen. Various polymer concentrations (0.05-0.75 g/g Ca salt) were used for the preparation of a series of C-S-H-polymer nanocomposite (C-S-HPN) materials. Synthetic C-S-H and C-S-HPN materials were characterized by XRD, FTIR, TG/DTG/DSC, 29Si and 13C MAS NMR spectroscopy, and SEM. XRD data showed a dependence of the extent of expansion for C-S-H layers as a function of polymers concentration. 29Si MAS NMR spectra suggest that the structures of synthetic C-S-H and C-S-HPN materials are related to that of tobermorite. SEM results exhibit significant differences in their structures depending on the concentration of the intercalated polymer.

Online publication: 2005-11-17
Publication type : full_text
Public price (Euros): 0.00