The influence of thickeners on coating surface structure: pair distribution analysis and correlations to structure and porosity
Source abstract
Abstract
We investigated the relationship between surface structure and porosity of coated layers and compared the effects of three thickeners: carboxymethyl cellulose, polyvinyl alcohol, and an alkali-swellable emulsion. The pair distribution function, g(r), was used to measure the effects of thickeners on surface structure. The main objectives were to investigate whether the surface structure correlates with the structure of the dry coated layers and if pair distribution function analysis can be used to give additional structural information, compared with traditional methods. We found that the surface structure (of ordered domains) was not automatically determined by the bulk structure. Thus, the pair distribution function was found to be a powerful tool for characterizing the effect of thickeners on coatings. The surfaces of the coated layers were characterized with respect to smoothness (RMS roughness) and order/disorder (ordered domains). These two features seem to be governed by different mechanisms.
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Research context
OpenAlex topics: Force Microscopy Techniques and Applications · Surface Roughness and Optical Measurements · Material Properties and Processing
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References (26)
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