Influence of Low Fractions of Styrene/Butyl Acrylate Polymer Latexes on Some Properties of Ordinary Portland Cement Mortars
| Autor: | Christian Graillat, Salima Boutti, Marie Urvoy, Roger Spitz, Isabelle Dubois-Brugger, Elodie Bourgeat-Lami |
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| Přispěvatelé: | LCPP, Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265 (C2P2), Centre National de la Recherche Scientifique (CNRS)-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-École supérieure de Chimie Physique Electronique de Lyon (CPE)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Lafarge Centre de Recherche [Lyon] (Lafarge LCR Lyon), Lafarge-Lafarge, Lafarge Centre de Recherche [Lyon] (Lafarge LCR Lyon), Lafarge, Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC) |
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Polymers and Plastics surface charge density General Chemical Engineering Butyl acrylate surfactant system 0211 other engineering and technologies Stabiliser polymer particles 02 engineering and technology mechanical properties Styrene law.invention cement mortar workability chemistry.chemical_compound law setting 021105 building & construction Materials Chemistry Copolymer latex-cement interactions Composite material Ionomer chemistry.chemical_classification Cement Organic Chemistry Polymer 021001 nanoscience & nanotechnology Portland cement [CHIM.POLY]Chemical Sciences/Polymers chemistry 0210 nano-technology |
| Zdroj: | Macromolecular Materials and Engineering Macromolecular Materials and Engineering, Wiley-VCH Verlag, 2007, 292 (1), pp.33-45. ⟨10.1002/mame.200600316⟩ |
| ISSN: | 1439-2054 1438-7492 |
| DOI: | 10.1002/mame.200600316 |
| Popis: | International audience; The influence of the chemical structure of styrene/butyl acrylate latexes on some properties of ordinary Portland cement mortars has been investigated for low fractions of polymer with respect to the amount of cement. The structural parameters that were varied included the presence of carboxylic surface changes, the nature of the surfactant system, the molecular weight of the non-ionic emulsifier, and the particle surface coverage. The first part of the study showed that sterically stabilised latexes remain colloidally and chemical stable for several hours in the cement interstitial medium. Moreover, no interaction could be shown between cement and latex components. Then, for a fraction of about 5wt.-% of polymer, no significant influence of the presence of the latex was observed on the end use properties of the mortars. However, it clearly appears that the use of a fraction anionic stabiliser is highly detrimental to the paste the workability, whereas this latter property is improved by the presence of non-ionic surfactant due to steric repulsion forces. Finally, the microstructure analysis confirms that the particles are homogenously dispersed in the mineral matrix and they remain smooth and spherical. |
| Databáze: | OpenAIRE |
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