{"@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/1362544419153310208.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/0032-3861(91)90186-m"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:003238619190186M?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:003238619190186M?httpAccept=text/plain"}}],"dc:title":[{"@value":"Morphology of oriented calcium alginate gels obtained by the flow-gelation method"}],"description":[{"notation":[{"@value":"Abstract   Cylinder-shaped oriented gels of calcium alginate were prepared by extruding a 2.6 wt% aqueous solution of sodium alginate (guluronate rich) into CaCl 2  solution through a glass tube. Effects of flow rates on chain orientation in solution and in the gel were examined by polarized optical microscopy. During flow, chains underwent planar orientation along the tube wall, which was reflected in the gel state. Increasing the flow rate increased the coil-stretch transition in solution but led to disorientation of chains in the gel due to increasing die swell and longitudinal shrinkage. This effect resulted in the occurrence of the highest anisotropy of the gel at low flow rate. Chain orientation in the gel was characterized by tilting towards the tangential direction with the appearance of a small negative birefringence, which was transformed to a large positive birefringence on drying due to chain realignment in the longitudinal direction. The morphology of the gel was deduced to be sheet-like structures stacked cylindrically with strong intrasheet binding. Scanning electron microscopy and wide-angle X-ray diffraction were both used in the investigation."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382544419153310213","@type":"Researcher","foaf:name":[{"@value":"Fumiyoshi Yokoyama"}]},{"@id":"https://cir.nii.ac.jp/crid/1382544419153310209","@type":"Researcher","foaf:name":[{"@value":"E.Chukwura Achife"}]},{"@id":"https://cir.nii.ac.jp/crid/1382544419153310210","@type":"Researcher","foaf:name":[{"@value":"Masaki Matsuoka"}]},{"@id":"https://cir.nii.ac.jp/crid/1382544419153310211","@type":"Researcher","foaf:name":[{"@value":"Kaoru Shimamura"}]},{"@id":"https://cir.nii.ac.jp/crid/1382544419153310208","@type":"Researcher","foaf:name":[{"@value":"Yuhiko Yamashita"}]},{"@id":"https://cir.nii.ac.jp/crid/1382544419153310212","@type":"Researcher","foaf:name":[{"@value":"Kazuo Monobe"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00323861"}],"prism:publicationName":[{"@value":"Polymer"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"1991-01","prism:volume":"32","prism:number":"16","prism:startingPage":"2911","prism:endingPage":"2916"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:003238619190186M?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:003238619190186M?httpAccept=text/plain"}],"createdAt":"2003-06-21","modifiedAt":"2019-03-19","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050306506455422208","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"In Situ Observation of Ca2+ Diffusion-Induced Superstructure Formation of a Rigid Polyanion"},{"@value":"<i>In Situ</i> Observation of Ca<sup>2+</sup> Diffusion-Induced Superstructure Formation of a Rigid Polyanion"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846641056604928","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Uniaxial and plane orientations of clay platelets in nanocomposite gels with different compositions during stretching and recovery"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846641749414528","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Synthesis and properties of soft nanocomposite materials with novel organic/inorganic network structures"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848655292755328","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Soft Nanohybrid Materials Consisting of Polymer–Clay Networks"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1016/0032-3861(91)90186-m"},{"@type":"OPENAIRE","@value":"doi_dedup___::c2422e4bdc9e9cdc3ed6b5bb0995ba19"},{"@type":"CROSSREF","@value":"10.1038/pj.2010.141_references_DOI_HWNFUKRAx0Wiii7giQZPtsocQA7"},{"@type":"CROSSREF","@value":"10.1007/12_2014_287_references_DOI_HWNFUKRAx0Wiii7giQZPtsocQA7"},{"@type":"CROSSREF","@value":"10.1016/j.polymer.2016.12.023_references_DOI_HWNFUKRAx0Wiii7giQZPtsocQA7"},{"@type":"CROSSREF","@value":"10.1021/ma501699d_references_DOI_HWNFUKRAx0Wiii7giQZPtsocQA7"}]}