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Novel Approaches to Metallization of Cellulose by Reduction of Cellulose‐Incorporated Copper and Nickel Ions
Author(s) -
Kotelnikova N.,
Vainio U.,
Pirkkalainen K.,
Serimaa R.
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750811
Subject(s) - microcrystalline cellulose , cellulose , materials science , nanoparticle , copper , nickel , chemical engineering , amorphous solid , nanocomposite , agglomerate , small angle x ray scattering , metal , inorganic chemistry , crystallography , nanotechnology , composite material , metallurgy , chemistry , scattering , physics , optics , engineering
Summary: Copper and nickel nanoparticles were synthesized in the insoluble microcrystalline cellulose support by reduction of metal ions with several reducers in various media resulting in cellulose‐metal nanocomposites. Wide‐angle X‐ray scattering results showed that supramolecular structure of cellulose did not change. Crystalline Cu 2 O and Cu 0 nanoparticles were prepared with reducers NaBH 4 and N 2 H 4 · H 2 SO 4 , CuO nanoparticles – with cellulose itself as a reducer. Crystalline Ni 0 nanoparticles were synthesized with N 2 H 4 · 2HCl and NaBH 4 ; Ni 0 nanoparticles in amorphous form were prepared with KH 2 PO 2 · H 2 O. SEM revealed large agglomerates of metal particles on the fibre surface. ASAXS and TEM have shown the nanoparticles to be in the range 5–55 nm.