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Preparation and characterization of an imogolite/chitosan hybrid with pyridoxal-5'-phosphate as an interfacial
Masaru Mukai1, Akihiko Takada1, Ayumi Hamada1
1Institute for Materials Chemistry and Engineering, Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan takahara.atsushi.150@m.kyushu-u.ac.jp.
Abstract:
Imogolite/chitosan hybrid films were prepared using pyridoxal-5'-phosphate (PLP) as an interfacial modifier. Thermogravimetric analysis and spectroscopic measurements revealed that the phosphate group of PLP was adsorbed on the imogolite. Furthermore, rheological measurements suggested that the PLP-modified imogolites (PLP-imogolite) had strong interactions with chitosan in solution. Moreover, UV absorption of the hybrid film showed that PLP and chitosan formed Schiff base linkages. Therefore, the hybrid films exhibited a significant improvement in their mechanical properties compared to those of pristine chitosan/imogolite hybrid films.
