Influence of Microcapsule Size and Shell Polarity on the Time-Dependent Viscosity of Geopolymer Paste

The effects of microencapsulated phase-change materials (MPCM) on the rheological properties of a geopolymer paste (GPP) were investigated. In order to quantify the time-dependent viscosity increase of the geopolymer paste containing MPCM (GPP-MPCM), a new rheological model was successfully develope...

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Bibliographic Details
Published inIndustrial & engineering chemistry research Vol. 57; no. 29; pp. 9457 - 9464
Main Authors Cao, Vinh Duy, Pilehvar, Shima, Salas-Bringas, Carlos, Szczotok, Anna M, Do, Nu Bich Duyen, Le, Hoa Thanh, Carmona, Manuel, Rodriguez, Juan F, Kjøniksen, Anna-Lena
Format Journal Article
LanguageEnglish
Published American Chemical Society 25.07.2018
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Summary:The effects of microencapsulated phase-change materials (MPCM) on the rheological properties of a geopolymer paste (GPP) were investigated. In order to quantify the time-dependent viscosity increase of the geopolymer paste containing MPCM (GPP-MPCM), a new rheological model was successfully developed. Three different MPCMs were compared in order to examine the effect of the hygroscopic nature of the microcapsule shells and the size distribution of the microcapsules. In addition, the effect of microcapsule concentration was investigated. It was found that microcapsules with polar functional groups on the shells affect the viscosity and the geopolymerization reaction of the geopolymer paste much more than microcapsules with hydrophobic shells. In addition, aggregated microcapsules influence the viscosities less than unaggregated microcapsules.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.8b01961