Ultraviolet-curable polyurethane acrylate nanocomposite coatings based on surface-modified calcium carbonate

Ki Ho Nam, Kwangwon Seo, Jongchul Seo, Sher Bahadar Khan, Haksoo Han

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Polyurethane acrylate/surface-modified colloidal calcium carbonate (PUA/SCaCO3) nanocomposite coatings were successfully prepared via a UV-curing technology. The structural and morphological features of the PUA/SCaCO3 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscope (FE-SEM), atomic force microscopy (AFM), and wide angle X-ray diffraction (XRD). The physical properties were strongly dependent upon chemical and morphological structures that originated from differences in SCaCO3 loading. A critical SCaCO3 concentration was observed for the evolution of both the structure and physical properties of the PUA/SCaCO3 nanocomposites as a function of SCaCO3 content. The thermal stability was measured by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively, and displayed some enhancement with the incorporation of SCaCO3 into PUA. Although the nanomechanical properties increased up to 3 wt% SCaCO3 content, they decreased due to lack of interfacial interaction with high SCaCO3 loading. Most importantly, the water uptake and water vapor transmission rate (WVTR) varied from 5.51 to 1.78 wt% and 28.9 to 19.9 g/m2 day, respectively, exhibiting significant enhancement in water resistance. The results clearly reveal that the performance of UV-curable PUA/SCaCO3 nanocomposites is strongly dependent on organically-modified colloidal SCaCO3 nanoparticles.

Original languageEnglish
Pages (from-to)22-30
Number of pages9
JournalProgress in Organic Coatings
Volume85
DOIs
Publication statusPublished - 2015 Aug 1

Fingerprint

Polyurethanes
Calcium Carbonate
Calcium carbonate
Nanocomposites
Coatings
Physical properties
Water
Steam
Field emission
Water vapor
Fourier transform infrared spectroscopy
Curing
Thermogravimetric analysis
Differential scanning calorimetry
Atomic force microscopy
Thermodynamic stability
Electron microscopes
Nanoparticles
Scanning
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Surfaces, Coatings and Films
  • Organic Chemistry
  • Materials Chemistry

Cite this

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title = "Ultraviolet-curable polyurethane acrylate nanocomposite coatings based on surface-modified calcium carbonate",
abstract = "Polyurethane acrylate/surface-modified colloidal calcium carbonate (PUA/SCaCO3) nanocomposite coatings were successfully prepared via a UV-curing technology. The structural and morphological features of the PUA/SCaCO3 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscope (FE-SEM), atomic force microscopy (AFM), and wide angle X-ray diffraction (XRD). The physical properties were strongly dependent upon chemical and morphological structures that originated from differences in SCaCO3 loading. A critical SCaCO3 concentration was observed for the evolution of both the structure and physical properties of the PUA/SCaCO3 nanocomposites as a function of SCaCO3 content. The thermal stability was measured by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively, and displayed some enhancement with the incorporation of SCaCO3 into PUA. Although the nanomechanical properties increased up to 3 wt{\%} SCaCO3 content, they decreased due to lack of interfacial interaction with high SCaCO3 loading. Most importantly, the water uptake and water vapor transmission rate (WVTR) varied from 5.51 to 1.78 wt{\%} and 28.9 to 19.9 g/m2 day, respectively, exhibiting significant enhancement in water resistance. The results clearly reveal that the performance of UV-curable PUA/SCaCO3 nanocomposites is strongly dependent on organically-modified colloidal SCaCO3 nanoparticles.",
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Ultraviolet-curable polyurethane acrylate nanocomposite coatings based on surface-modified calcium carbonate. / Nam, Ki Ho; Seo, Kwangwon; Seo, Jongchul; Khan, Sher Bahadar; Han, Haksoo.

In: Progress in Organic Coatings, Vol. 85, 01.08.2015, p. 22-30.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ultraviolet-curable polyurethane acrylate nanocomposite coatings based on surface-modified calcium carbonate

AU - Nam, Ki Ho

AU - Seo, Kwangwon

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