期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 97, 期 -, 页码 138-144出版社
ELSEVIER
DOI: 10.1016/j.colsurfb.2012.04.031
关键词
Adhesion; Hydrophobicity; Extended DLVO theory; Pseudomonas putida; Nano-sized polymeric particle
资金
- Korea Science and Engineering Foundation (KOSEF)
- Korea government [R01-2007-000-11570-0]
- Basic Science Research Program of the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0001451]
- National Research Foundation of Korea [R01-2007-000-11570-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Due to the increasing production and application of nanoparticles, their release into the environment would be inevitable, which requires a better understanding of their fate in the environment. When considering their toxic behavior or biodegradation as their fate, their adhesion to the cell surface must be the first step to be thoroughly studied. In this study. nano-sized polymeric particles of urethane acrylate with various hydrophobicity and ionic properties were synthesized as model nanoparticles, and their adhesion to Pseudomonas putida strains was monitored. The higher hydrophobicity and positive charge density on the particle surface exhibited the larger adhesion to the bacteria, whereas negative charge density on the particle hindered their adhesion to the bacteria, albeit high hydrophobicity of particle. These observations were successfully explained with the extended Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. (C) 2012 Elsevier B.V. All rights reserved.
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