Investigation of the Nanoscale Morphology in Industrially Relevant Clearcoats of Waterborne Polymer Colloids by Means of Variable-Angle-Grazing Incidence Small-Angle X-ray Scattering

Apostolos Vagias, Qi Chen, Gert H. ten Brink, Daniel Hermida-Merino, Jurgen Scheerder, Giuseppe Portale*

*Corresponding author for this work

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Abstract

Soft polymer colloidal water suspensions are extremely important formulations for industrial applications such as water-based environmental-friendly coatings, paints, and adhesives. Homogeneity of the final coating at the micrometer and nanoscale is a crucial factor for optimal coating performance, such as barrier properties against solvent permeation. Here, we investigated the remnant nanostructure in slot-die-coated micrometer-sized thick clear coating films (clearcoats) of three different waterborne polymer colloids (pure soft, pure hard, and soft/hard multiphase), commonly utilized as primers in paint formulations [Mader et al. Prog. Org. Coat. 2011, 71, 123-135], using variable-angle grazing incidence small-angle X-ray scattering (GISAXS) complemented with cross-sectional atomic force microscopy (cs-AFM). After complete macroscopic drying, the coating films exhibit the presence of residual nanostructure with characteristic distance (d*) smaller than the original particle size and even smaller (

Original languageEnglish
Pages (from-to)2482-2494
Number of pages13
JournalACS Applied Polymer Materials
Volume1
Issue number9
DOIs
Publication statusPublished - Sep-2019

Keywords

  • waterborne polymer coatings
  • acrylics
  • slot-die coating
  • variable-angle GISAXS
  • nanostructure
  • annealing
  • AFM
  • glass transition
  • LATEX FILM FORMATION
  • COPOLYMER THIN-FILMS
  • GLASS-TRANSITION
  • SURFACE
  • GISAXS
  • PAINT
  • DEFORMATION
  • POLYSTYRENE
  • SIMULATION
  • PARTICLES

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