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Nanohybrid film consisted of hydrophobized imogolite and various aliphatic polyesters

Publication date: 26 June 2015
Source:Polymer, Volume 68

Author(s): Kazuhiro Shikinaka , Ayaki Abe , Kiyotaka Shigehara

In this paper, we created nanohybrids consisted of imogolite nanotube and various aliphatic polyesters through a hydrophobization of imogolite. The hydrophobization of imogolite via covalent bonding between aluminol group on imogolite and aldehyde group in benzaldehyde was firstly achieved. The hydrophobized imogolite is well miscible with aliphatic polyester and their mixture forms the transparent films via casting of their chloroform dispersion. An addition of hydrophobized imogolites to aliphatic polyester such as poly(l-lactic acid), poly(?-caprolactone), and poly(butylene succinate) brought about the plasticization of polymer films that should be induced by the miniaturization of polymer crystals via the nucleation of polymer chains on hydrophobized IGs. Especially, the nanohybrids of poly(l-lactic acid) and hydrophobized imogolite showed an oriented crystallization under stretching.
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This project has received funding from the European Unionís Seventh Framework Programme for research, technological development and demonstration