Synthesis and properties of rotaxane-cross-linked polymers using a double-stranded γ-CD-based inclusion complex as a supramolecular cross-linker. (16th October 2017)

• Record Type: Journal Article
• Authors: Jang, Keumhee; Iijima, Keisuke; Koyama, Yasuhito; Uchida, Satoshi; Asai, Shigeo; Takata, Toshikazu
• Is Part Of: Polymer. Volume 128(2017)
• Page Start: 379
• Page End: 385
• Publication Date: 2017-10-16
• Subjects: Rotaxane -- Cyclodextrin -- Cross-linking -- Gel -- Radical polymerization; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2017.01.062
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: A vinylic supramolecular cross-linker (VSC) was prepared from γ- cyclodextrin ( γ- CD) and a macromonomer for the purpose of simple and easy introduction of rotaxane cross-links into polymers via the radical polymerization of vinyl monomers. The synthesis of VSC as a pseudocross-linked cross-linker was performed by the simple mixing of γ- CD and a poly(ethylene glycol)-based terminal-bulky macromonomer in water. The radical polymerization of typical vinyl monomers such as N, N -dimethyl acrylamide in the presence of the VSC afforded the corresponding rotaxane cross-linked polymers (RCPs) under both photoinitiated and redox polymerization conditions. In particular, RCPs exhibited mechanical properties endowed by the rotaxane cross-links that were superior to those of chemically cross-linked polymers, demonstrating the significant usefulness of the VSCs. Graphical abstract: Highlights: A vinylic supramolecular cross-linker (VSC) was prepared from γ- cyclodextrin and a macromonomer. The radical polymerization of N, N -dimethyl acrylamide with VSC afforded rotaxane cross-linked polymers (RCPs). RCPs exhibited superior mechanical properties to those of chemically cross-linked polymers.