caa a22 4500 463191439 CHVBK 20180406164910.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10973-006-8318-3 doi (NATIONALLICENCE)springer-10.1007/s10973-006-8318-3 Synthesis and characterization of antibacterial compounds using montmorillonite and chlorhexidine acetate [Elektronische Daten] [D. Yang, P. Yuan, J. Zhu, H. He] Two series of antibacterial compounds were synthesized using montmorillonite and chlorhexidine acetate (CA) by ion-exchange reaction. The resulting samples were characterized by high-resolution thermogravimetric analysis (HRTG), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and their antibacterial activity was assayed by halo method. In this study, the loaded amounts of CA in the resultant compounds were evaluated by the HRTG curves. CA adopts a lateral monolayer arrangement in the resulting samples with low CA loading, while a special state with partial overlapping of organic molecules is supposed for the resulting samples prepared at 1.0-4.0 CEC. After the intercalation with CA, the hydrophilic surfaces of montmorillonite are changed to hydrophobic ones, reflected by the frequency shift of the symmetric ν1(O-H) stretching vibration from low to high. This study shows that the interlayer cations in raw montmorillonite have little influence on the structure of the resulting samples. Antibacterial activity test against E. coli demonstrates that the antibacterial activity of the resulting samples strongly depends on the content of the loaded CA and these resulting materials show a long-term antibacterial activity that can last for at least one year. Springer Science+Business Media LLC, 2007 antibacterial materials nationallicence chlorhexidine acetate nationallicence high-resolution thermogravimetric analysis nationallicence interlayer structure nationallicence montmorillonite nationallicence Yang D. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Yuan P. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Zhu J. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut He H. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 89/3(2007-09-01), 847-852 1388-6150 89:3<847 2007 89 10973 https://doi.org/10.1007/s10973-006-8318-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-8318-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang D. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Yuan P. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- Zhu J. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 700 1- He H. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 89/3(2007-09-01), 847-852 1388-6150 89:3<847 2007 89 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer