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

Vinh Duy Cao; Shima Pilehvar; Carlos Salas-Bringas; Anna M. Szczotok; Nu Bich Duyen Do; HT Le; Manuel Carmona; Juan F. Rodriguez; Anna-Lena Kjøniksen

doi:10.1021/acs.iecr.8b01961

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

Vinh Duy Cao, Shima Pilehvar, Carlos Salas-Bringas, Anna M. Szczotok, Nu Bich Duyen Do, HT Le, Manuel Carmona, Juan F. Rodriguez, Anna-Lena Kjøniksen^*

^*Corresponding author for this work

National Centre for Nano Fabrication and Characterization

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

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 micro capsules.

Original language	English
Journal	Industrial and Engineering Chemistry Research
Volume	57
Issue number	29
Pages (from-to)	9457-9464
ISSN	0888-5885
DOIs	https://doi.org/10.1021/acs.iecr.8b01961
Publication status	Published - 2018

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title = "Influence of Microcapsule Size and Shell Polarity on the Time-Dependent Viscosity of Geopolymer Paste",

abstract = "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 micro capsules.",

author = "Cao, {Vinh Duy} and Shima Pilehvar and Carlos Salas-Bringas and Szczotok, {Anna M.} and Do, {Nu Bich Duyen} and HT Le and Manuel Carmona and Rodriguez, {Juan F.} and Anna-Lena Kj{\o}niksen",

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doi = "10.1021/acs.iecr.8b01961",

language = "English",

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T1 - Influence of Microcapsule Size and Shell Polarity on the Time-Dependent Viscosity of Geopolymer Paste

AU - Cao, Vinh Duy

AU - Pilehvar, Shima

AU - Salas-Bringas, Carlos

AU - Szczotok, Anna M.

AU - Do, Nu Bich Duyen

AU - Le, HT

AU - Carmona, Manuel

AU - Rodriguez, Juan F.

AU - Kjøniksen, Anna-Lena

PY - 2018

Y1 - 2018

N2 - 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 micro capsules.

AB - 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 micro capsules.

U2 - 10.1021/acs.iecr.8b01961

DO - 10.1021/acs.iecr.8b01961

M3 - Journal article

SN - 0888-5885

VL - 57

SP - 9457

EP - 9464

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 29

ER -

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

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