研究目的
To induce UVA shielding properties in highly flexible and visible transparent poly (vinyl alcohol) (PVA) matrix to be employed as UVA protective coatings.
研究成果
Highly flexible and visibly transparent PVA nanocomposite films were fabricated with lithium doped stannous oxide nanofillers by aqueous solvent casting method. The introduced nano fillers were found to be well dispersed throughout the PVA matrix thereby retaining high visible transparencies (550 nm). In addition, the introduced fillers affected a continuous reduction in energies associated with inter-band electronic transitions leading to novel opto-electronic properties with enhanced UVA shielding efficacies.
1：Experimental Design and Method Selection:
Fabrication of PVA nanocomposite films with varying amounts of lithium doped stannous oxide (Li
2：4Sn8O) nanofillers by mechanical shearing followed by film casting. Sample Selection and Data Sources:
PVA and Li
3：4Sn8O nanocomposite films. List of Experimental Equipment and Materials:
JASCO 4100 spectrometer, Schimadzu-1800 spectrophotometer.
4：Experimental Procedures and Operational Workflow:
Dissolving varying weight fractions of Li
5：4Sn8O nano fillers in PVA, mechanical shearing, ultra sonication, casting onto glass molds, drying under ambient atmosphere. Data Analysis Methods:
FTIR and UV-visible spectral analysis.
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