Characterization of paint formulated using secondary TiO2 pigments recovered from waste paint

The paint industry is continuously striving to reduce its environmental impact, especially when it comes to the major virgin white pigment, titanium dioxide (TiO 2 ). In this work, recycled TiO 2 pigment was used in a paint formulation as a replacement for pigment made from virgin raw materials. The...

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Bibliographic Details
Published in:JCT research 2019, Vol.16 (2), p.607-614
Main Authors: Karlsson, Mikael C. F., Álvarez-Asencio, Rubén, Bordes, Romain, Larsson, Anders, Taylor, Phil, Steenari, Britt-Marie
Format: Article
Language:English
Subjects:
Ceiling paints
Chemistry and Materials Science
Color characteristics
Corrosion and Coatings
Environmental impact
Gloss
Industrial Chemistry/Chemical Engineering
Lead poisoning
Materials Science
Paint
Paint formulation
Paints
Pigment particles
Pigments
Polymer Sciences
Raw materials
Recycling
Surface finish
Surface finishes
Surfaces and Interfaces
Thin Films
TiO2
Titanium dioxide
Titanium dioxides (TiO2)
Tribology
Waste
Wastes
White pigments
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Summary:The paint industry is continuously striving to reduce its environmental impact, especially when it comes to the major virgin white pigment, titanium dioxide (TiO 2 ). In this work, recycled TiO 2 pigment was used in a paint formulation as a replacement for pigment made from virgin raw materials. The paint was evaluated based on pH, Stormer and ICI viscosities, gloss, hiding power, and color characteristics. The paint films were also characterized by LVSEM–EDS, AFM, and profilometry. The most significant difference between a paint based on recycled pigments and a paint based on virgin pigments was the agglomeration of pigment particles which gave a reduction in gloss and a rougher surface of the dried paint film based on recycled pigment, and it could be concluded that the recycled pigment could not be used without accepting a small decrease in paint quality. This points toward two main directions: (1) the use of recycled pigment in applications with less demand on surface finish and gloss, such as ceiling paints, and (2) that further work on formulation should be carried out with the recycled pigment as for any other new pigment introduced in a paint formulation to optimize its performance.
ISSN:1547-0091
2168-8028
1935-3804
2168-8028
DOI:10.1007/s11998-018-0132-x