Block Copolymer Thin Films of DL-Amino Acids and Alkylene Oxide as Alignment Films for Ferroelectric Liquid Crystals

Autor:	Masao Honma, Naoko Mikami
Rok vydání:	1998
Předmět:	Materials science Ethylene oxide Oxide General Chemistry Acid anhydride Rubbing Crystallography chemistry.chemical_compound chemistry Polymerization Liquid crystal Diamine Polymer chemistry Copolymer
Zdroj:	NIPPON KAGAKU KAISHI. :778-781
ISSN:	2185-0925 0369-4577
Popis:	ABA block copolymers of DL-amino acids and alkylene oxide were studied as alignment films for ferroelectric liquid lciqryusitda ls (FLC). When the equal amount of D-NCA (N-carboxyamino acid anhydride) and L-NCA was mixed at first and polymerized as an ABA block copolymer with α- (3-aminopropy1) ω-aminoethylpoly (oxyethylene) [poly (ethylene oxide) diamine], uniform alignment of FLC was observed on the copolymer. When D-NCA and L-NCA were added one by one, uniform alignment of FLC was not observed. Furthermore, block copolymer of DL-γ-methyl glutamate and alkyleneoxide aligned FLC normal to the rubbing direction of the thin film. In the case of block copolymer of ethylene oxide and DL-leucine, FLC was aligned in parallel to the rubbing direction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::927044ce2a255e0229b1b97606b3bee7 https://doi.org/10.1246/nikkashi.1998.778 Zobrazit plný text záznamu