{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363951795846280832.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1021/ma100419c"}},{"identifier":{"@type":"URI","@value":"https://pubs.acs.org/doi/pdf/10.1021/ma100419c"}}],"dc:title":[{"@value":"Synthesis and Mechanical Properties of a Nanocomposite Gel Consisting of a Tetra-PEG/Clay Network"}],"description":[{"notation":[{"@value":"Tetra-poly(ethylene glycol) (PEG)-based nanocomposite hydrogels (tP-NC gels) were prepared by in situ polymerization of two kinds of macromonomer (TN-PEG and TA-PEG), each having four reactive PEG arms, in the presence of clay (Laponite XLG) in aqueous media. By adopting appropriate synthetic conditions such as the use of pyrophosphate-Na buffer and selected homogeneous mixing procedures, tP-NC gels with high transparency and excellent tensile properties, e.g., high elongation (900−1000%) and high tensile strength (300−560 kPa), approximately 2−4 times those of the corresponding original tetra-PEG gel, were obtained at a relatively low clay concentration (Cclay = 2 × 10−2 mol/L-H2O) and a wide range of polymer concentrations (Cp = 120−240 mg/mL-H2O). We investigated the effects of buffer, Cclay, and Cp on forming tetra-PEG/clay gels, their tensile properties, and the network structures. Also, we studied interactions between the clay and tetra-PEG segments, by measurements such as viscometry, X-ray fluores..."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383951795846280832","@type":"Researcher","foaf:name":[{"@value":"Mieko Fukasawa"}],"jpcoar:affiliationName":[{"@value":"Material Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado, Sakura, Chiba 285-0078, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383951795846280834","@type":"Researcher","foaf:name":[{"@value":"Takamasa Sakai"}],"jpcoar:affiliationName":[{"@value":"Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383951795846280835","@type":"Researcher","foaf:name":[{"@value":"Ung-il Chung"}],"jpcoar:affiliationName":[{"@value":"Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, 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