Phthalocyanine green aluminum pigment prepared by inorganic acid radical/radical polymerization for waterborne textile applications
Tóm tắt
Polymer-encapsulated phthalocyanine green aluminum pigment was prepared via inorganic acid radical/radical polymerization route, and its properties were investigated by FT-IR, TGA, XPS, SEM, and TEM. SEM and TEM images showed that the aluminum pigment was encapsulated by a thin film of polymer which ensured good anti-corrosive performance in alkaline (pH 12) and acidic (pH 1) mediums. XPS results showed significant chemical shifts, and increase in binding energies to higher levels after raw aluminum pigment was phosphate coated and colored by phthalocyanine green pigment. TGA results suggest a marginal reduction in its thermal stability. Major absorbance peaks, such as aluminum phosphate (AlPO4), different monomer units and CH2 stretching vibration of phthalocyanine green G were highlighted in the FTIR spectra of the colored aluminum matrix. The polymer-encapsulated aluminum pigment (PAP) had excellent UPF properties regardless of the coating thickness, but the handle of the fabric was affected when the coating thickness increased beyond 0.04 mm. The prepared pigment showed excellent rubbing and washing fastness, but its handle and color strength were compromised when the content of monomer ratio by 100 % weight of PGAP increased beyond 10 %, was applied on cotton fabrics. This research provides a simple but effective route for the preparation of polymer-encapsulated aluminum pigments for waterborne textile applications.
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