Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 18, Pages 11739-11748Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b00611
Keywords
casein; hollow polymeric nanospheres; opaque coatings; SAXS; optical material
Funding
- National Science Foundation of China [21504049]
- Shaanxi Provincial Education Fund [14JK1087]
- Key Scientific Research Group of Shaanxi province [2013KCT-08]
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology
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Casein-based hollow polymeric sphere were fabricated through emulsifier-free polymerization coupled with alkali swelling approach. Hollow structure and nanoscale size of casein-based polymeric spheres were verified by TEM, AFM, SEM, and UV-vis spectra. The as-obtained hollow spheres were proved exhibiting superior opaque characteristic. Through adjusting the structural parameters, for example, MAA usages and MAA content in seed to core, sphere film showed tunable visible-light transmittance and antiultraviolet property. The formation mechanism of casein-based hollow sphere has been discussed in depth. Worth mentioning, the resultant hollow polymeric sphere can easily form films itself at room temperature, which would open a new possibility of designing opaque coatings in several fields, such as leather, packaging, paper making, biomedical, and special indoor coating applications.
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