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Article: Lamellar structure of POM spherulites imaged by a two-stage RuO4 staining technique

TitleLamellar structure of POM spherulites imaged by a two-stage RuO4 staining technique
Authors
Issue Date1996
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-8995/
Citation
Journal Of Applied Polymer Science, 1996, v. 59 n. 11, p. 1733-1740 How to Cite?
AbstractRuthenium tetroxide solution was prepared in situ by oxidation of ruthenium compounds at lower oxidation states with an excess of sodium periodate. The solution was able to stain saturated polymer POM in the vapor phase and it remained effective for up to 2 weeks. The melting behavior of POM samples stained for different lengths of time was studied with DSC and the staining process was analyzed. The results indicated that ruthenium tetroxide affected both the amorphous region and the crystals. During the early stage of the staining process, the tetroxide reacted preferentially with the amorphous material near the specimen surface. Much of this affected material was washed away after the rinsing process, thus resulting in an apparent increase in crystallinity. Prolonged staining would cause more crystals to degrade; hence, the crystallinity would drop. A two-step vapor staining technique was developed to improve the contrast between the amorphous and crystalline regions of ultrathin POM sections. The lamellar structure of POM spherulites was revealed and examined under TEM. The results showed that POM spherulites possess a category 2 structure and the thickness of the lamellae is about 7 nm. © 1996 John Wiley & Sons, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/76072
ISSN
2015 Impact Factor: 1.866
2015 SCImago Journal Rankings: 0.578
References

 

DC FieldValueLanguage
dc.contributor.authorLi, JXen_HK
dc.contributor.authorNess, JNen_HK
dc.contributor.authorCheung, WLen_HK
dc.date.accessioned2010-09-06T07:17:22Z-
dc.date.available2010-09-06T07:17:22Z-
dc.date.issued1996en_HK
dc.identifier.citationJournal Of Applied Polymer Science, 1996, v. 59 n. 11, p. 1733-1740en_HK
dc.identifier.issn0021-8995en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76072-
dc.description.abstractRuthenium tetroxide solution was prepared in situ by oxidation of ruthenium compounds at lower oxidation states with an excess of sodium periodate. The solution was able to stain saturated polymer POM in the vapor phase and it remained effective for up to 2 weeks. The melting behavior of POM samples stained for different lengths of time was studied with DSC and the staining process was analyzed. The results indicated that ruthenium tetroxide affected both the amorphous region and the crystals. During the early stage of the staining process, the tetroxide reacted preferentially with the amorphous material near the specimen surface. Much of this affected material was washed away after the rinsing process, thus resulting in an apparent increase in crystallinity. Prolonged staining would cause more crystals to degrade; hence, the crystallinity would drop. A two-step vapor staining technique was developed to improve the contrast between the amorphous and crystalline regions of ultrathin POM sections. The lamellar structure of POM spherulites was revealed and examined under TEM. The results showed that POM spherulites possess a category 2 structure and the thickness of the lamellae is about 7 nm. © 1996 John Wiley & Sons, Inc.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-8995/en_HK
dc.relation.ispartofJournal of Applied Polymer Scienceen_HK
dc.rightsJournal of Applied Polymer Science. Copyright © John Wiley & Sons, Inc.en_HK
dc.titleLamellar structure of POM spherulites imaged by a two-stage RuO4 staining techniqueen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8995&volume=59&spage=1733&epage=1740&date=1996&atitle=Lamellar+structure+of+POM+spherulites+imaged+by+a+two-stage+RuO4+staining+techniqueen_HK
dc.identifier.emailCheung, WL:wlcheung@hkucc.hku.hken_HK
dc.identifier.authorityCheung, WL=rp00103en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0030106440en_HK
dc.identifier.hkuros10720en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030106440&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume59en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1733en_HK
dc.identifier.epage1740en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, JX=7410061004en_HK
dc.identifier.scopusauthoridNess, JN=11040094100en_HK
dc.identifier.scopusauthoridCheung, WL=7202743084en_HK

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