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Environmentally friendly coloured materials: cellulose/titanium dioxide/inorganic pigment composite spherical microbeads prepared by viscose phase‐separation method
Author(s) -
Nagaoka Shoji,
Nagata Masanori,
Arinaga Kenji,
Shigemori Kiyoshi,
Takafuji Makoto,
Ihara Hirotaka
Publication year - 2007
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2007.00107.x
Subject(s) - cellulose , viscose , composite number , titanium dioxide , materials science , chemical engineering , photocatalysis , phase (matter) , environmentally friendly , xanthate , nanocellulose , composite material , chemistry , polymer chemistry , catalysis , organic chemistry , ecology , engineering , biology
In order to develop environmentally friendly coloured materials, cellulose composite spherical microbeads hybridised with titanium dioxide (TiO 2 ) particles and inorganic pigment were prepared by a phase‐separation method using viscose and an aqueous solution containing sodium polyacrylate. Findings regarding the relationships between cellulose xanthate and the electronic characteristics of TiO 2 particles used in the cellulose/inorganic material composite sphering process are also reported. These findings suggest that the location of TiO 2 particles in cellulose microbeads is related to electrical repulsion between the xanthate (CSS − ) group and TiO 2 . The use of TiO 2 powder as colour pigment is limited, as its colour is white. The cellulose composite spherical microbeads covered with TiO 2 and Fe 2 O 3 particles were developed by addition of iron oxide (Fe 2 O 3 ). Their surfaces were viewed by laser microscope and using SEM images. These composite microbeads retained the photocatalytic property of TiO 2 . Cellulose/TiO 2 /Fe 2 O 3 composite spherical microbeads with both colour function and photocatalytic properties were successfully prepared.