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Amphiphilic Core/Shell Nanoparticles to Reduce Biocide Leaching From Treated Wood, 1 – Leaching and Biological Efficacy
Author(s) -
Salma Umme,
Chen Ning,
Richter Dana L.,
Filson Paul B.,
DawsonAndoh Benjamin,
Matuana Laurent,
Heiden Patricia
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900250
Subject(s) - tebuconazole , biocide , materials science , leaching (pedology) , nanoparticle , amphiphile , gelatin , chemical engineering , copolymer , biopolymer , nuclear chemistry , fungicide , composite material , nanotechnology , organic chemistry , chemistry , soil water , polymer , botany , environmental science , soil science , engineering , biology
Core/shell nanoparticles containing the fungicide tebuconazole were prepared from amphiphilic copolymers of gelatin grafted with MMA. The grafting was performed in water at levels of 1.5–15 wt.‐% solids based on matrix mass, to give core/shell nanoparticles with median diameters ranging from ≈200 to 400 or ≈10 to 100 nm depending on composition, conditions used, and work‐up. The biocide‐containing nanoparticles were delivered into wood in up to 85% efficiency. Wood blocks treated with tebuconazole‐containing nanoparticles leached less tebuconazole than wood blocks treated with tebuconazole solutions. The best nanoparticle formulations afforded wood blocks with a biological efficacy comparable to solution‐treated wood block controls in soil jar decay tests.