Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2001-11-16
pubmed:abstractText
The in-depth structural analysis of spherulites of artificial cellulose, formed by the enzymatic polymerization of cellobiosyl fluoride, is reported. Both positive- and negative-type spherulites were observed by polarization optical microscopy. Scanning electron microscopy revealed that the negative spherulites have a three-dimensional round shape, where platelike single crystals of the artificial cellulose originate radially from the center. Transmission electron microscopy confirmed that the cellulose chains orient vertically in the platelike crystals, explaining the observation of negative-type spherulites by polarization optical microscopy. Cellulose spherulites can be formed easily via the enzymatic polymerization process, and the occurrence of both positive- and negative-type spherulites is proposed, due to two independent polymerization mechanisms.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1525-7797
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
168-73
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Formation and structure of artificial cellulose spherulites via enzymatic polymerization.
pubmed:affiliation
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't