Preparation and characterization of tungsten oxide fortified poly(urea-formaldehyde) microcapsules for self-healing coatings
Abstract
Radiation-resistant poly(urea-formaldehyde) (PUF) microcapsules with a bisphenol A diglycidyl ether/butyl glycidyl ether core were prepared via emulsion polymerization. Tungsten oxide (WO3) nanoparticles were incorporated into the polymer shell to improve radiation resistance of the resultant PUF microcapsules. Microcapsules prepared with modified WO3 nanoparticles had an average diameter of 117 μm, an encapsulation efficiency of 48%, and evenly dispersed nanoparticle incorporation of 3.5 wt%. Modification of dense WO3 nanoparticles was necessary for even dispersion into PUF microcapsule shells. The corrosion protection properties of epoxy films cast on mild steel were demonstrated via scratching and exposure to salt solution. Films containing modified WO3 fortified microcapsules demonstrated self-healing and retained corrosion protection properties. Under gamma irradiation, WO3/PUF microcapsules exhibited less degradation of epoxy healing core compared to microcapsules that were not fortified with WO3.
- Authors:
- Publication Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Org.:
- USDOE Office of Environmental Management (EM); USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 2278877
- Alternate Identifier(s):
- OSTI ID: 2318902
- Report Number(s):
- SRNL-STI-2023-00486
Journal ID: ISSN 0142-9418; S0142941824000059; 108328; PII: S0142941824000059
- Grant/Contract Number:
- 89303321CEM000080
- Resource Type:
- Published Article
- Journal Name:
- Polymer Testing
- Additional Journal Information:
- Journal Name: Polymer Testing Journal Volume: 131 Journal Issue: C; Journal ID: ISSN 0142-9418
- Publisher:
- Elsevier
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Poly (urea-formaldehyde); Self-healing coatings; Tungsten oxide; Microcapsules
Citation Formats
Adams, W. Taylor, Brechin, Bryce, and Truong, Thanh-Tam. Preparation and characterization of tungsten oxide fortified poly(urea-formaldehyde) microcapsules for self-healing coatings. United Kingdom: N. p., 2024.
Web. doi:10.1016/j.polymertesting.2024.108328.
Adams, W. Taylor, Brechin, Bryce, & Truong, Thanh-Tam. Preparation and characterization of tungsten oxide fortified poly(urea-formaldehyde) microcapsules for self-healing coatings. United Kingdom. https://doi.org/10.1016/j.polymertesting.2024.108328
Adams, W. Taylor, Brechin, Bryce, and Truong, Thanh-Tam. Thu .
"Preparation and characterization of tungsten oxide fortified poly(urea-formaldehyde) microcapsules for self-healing coatings". United Kingdom. https://doi.org/10.1016/j.polymertesting.2024.108328.
@article{osti_2278877,
title = {Preparation and characterization of tungsten oxide fortified poly(urea-formaldehyde) microcapsules for self-healing coatings},
author = {Adams, W. Taylor and Brechin, Bryce and Truong, Thanh-Tam},
abstractNote = {Radiation-resistant poly(urea-formaldehyde) (PUF) microcapsules with a bisphenol A diglycidyl ether/butyl glycidyl ether core were prepared via emulsion polymerization. Tungsten oxide (WO3) nanoparticles were incorporated into the polymer shell to improve radiation resistance of the resultant PUF microcapsules. Microcapsules prepared with modified WO3 nanoparticles had an average diameter of 117 μm, an encapsulation efficiency of 48%, and evenly dispersed nanoparticle incorporation of 3.5 wt%. Modification of dense WO3 nanoparticles was necessary for even dispersion into PUF microcapsule shells. The corrosion protection properties of epoxy films cast on mild steel were demonstrated via scratching and exposure to salt solution. Films containing modified WO3 fortified microcapsules demonstrated self-healing and retained corrosion protection properties. Under gamma irradiation, WO3/PUF microcapsules exhibited less degradation of epoxy healing core compared to microcapsules that were not fortified with WO3.},
doi = {10.1016/j.polymertesting.2024.108328},
journal = {Polymer Testing},
number = C,
volume = 131,
place = {United Kingdom},
year = {Thu Feb 01 00:00:00 EST 2024},
month = {Thu Feb 01 00:00:00 EST 2024}
}
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