title: Formation and structure of Langmuir-Blodgett films of organo-modified aluminosilicate with high surface coverage.
abstract: We have developed an effective organo-modification method at the organic solvent/distilled water interface of natural aluminosilicate clay surfaces. We also investigated the molecular arrangement of organo-modified aluminosilicate with high surface coverage in Langmuir-Blodgett films (LB) by performing out-of-plane and in-plane X-ray diffraction (XRD) measurements. In addition, the surface morphology of mixed monolayers of organo-modified aluminosilicate and several biodegradable polymers (e.g., poly(L-lactide), PLLA) was also characterized by atomic force microscopy (AFM). The in-plane XRD results of multilayers of organo-modified aluminosilicate formed by the LB method indicate the formation of a two-dimensional lattice of hydrocarbons on the aluminosilicate surface. These hydrocarbons of organo-modified reagents packed hexagonal or orthorhombic in films. Based on our experimental findings, the LB technique enabled the formation of a densely packed organo-modified aluminosilicate monolayer at the water surface. Furthermore, for mixed monolayer systems comprising an organo-modified clay with high surface coverage and biodegradable polymers, a miscible surface was observed by AFM on a mesoscopic scale, whereas those with low surface coverage formed phase-separated structures.
authors.affiliation: Graduate School of Science and Engineering, Faculty of Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan. Electronic address: fujimori@fms.saitama-u.ac.jp.
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Fujimori
authors.affiliation: Department of Functional Material Science, Faculty of Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan.
authors.forename: Shuntaro
authors.initials: S
authors.lastname: Arai
authors.affiliation: Graduate School of Science and Engineering, Yamagata University, Yonazawa, Yamagata 992-8510, Japan.
authors.forename: Jun-Ichi
authors.initials: JI
authors.lastname: Kusaka
authors.affiliation: Kunimine Industries Co., Ltd., 23-5 Kuidesaku, Jyoban, Shimofunao, Iwaki, Fukushima 972-8312, Japan.
authors.forename: Munehiro
authors.initials: M
authors.lastname: Kubota
authors.affiliation: Kunimine Industries Co., Ltd., 23-5 Kuidesaku, Jyoban, Shimofunao, Iwaki, Fukushima 972-8312, Japan.
authors.forename: Kei-Ichi
authors.initials: KI
authors.lastname: Kurosaka
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D006838:Hydrocarbons / Q000737:chemistry*; D015394:Molecular Structure; D010316:Particle Size; D011108:Polymers / Q000737:chemistry; D013499:Surface Properties
chemical_list: D000538:Aluminum Silicates; D006838:Hydrocarbons; D011108:Polymers; C049037:aluminosilicate