In this thesis, casein was investigated with respect to its colloidal properties as well as its application as superplasticizer in cementitious materials. In the pH range of 12 to > 14, first dissociation of casein micelles in dilute solution followed by re-association of casein submicelles were found. In flooring compounds such as SLUs, casein submicelles are the primary species which adsorbs onto the binder surface, thus facilitating the dispersing effect. Further, it was found that fast protein liquid chromatography can recognize different casein protein compositions which facilitates a simple and effective method to assess the quality of casein superplasticizer. Lastly, a temperature 110 °C for up to 2 h was found to present optimal drying conditions for casein powder. Under those conditions, the casein proteins do not denature into crosslinked proteins or peptide fragments.
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In this thesis, casein was investigated with respect to its colloidal properties as well as its application as superplasticizer in cementitious materials. In the pH range of 12 to > 14, first dissociation of casein micelles in dilute solution followed by re-association of casein submicelles were found. In flooring compounds such as SLUs, casein submicelles are the primary species which adsorbs onto the binder surface, thus facilitating the dispersing effect. Further, it was found that fast prote...
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