English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/78812
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Degradation of Nitric Acid-Treated Bulk Polyethylene. III. Melting Behavior

AuthorsCagiao, M. E. ; Rueda, Daniel R. ; Baltá Calleja, Francisco José
KeywordsLow-density polyethylene
Differential scanning-calorimetry
Long period
Fuming nitric acid
Dicarboxylic acids
Issue Date1983
CitationColloid and Polymer Science, 261, 626-630 (1983)
AbstractLDPE samples with differing branching content were treated with fuming nitric acid for times up to 180 h at 60~ The samples were examined by differential scanning calorimetry and small angle X-ray diffraction. While the crystal thickness derived from the X-ray long period remains practically constant throughout treatment time t, a conspicuous sharpening and shifting of the melting curves to higher temperatures with t is observed. It is suggested that the shift in melting peak is caused by the contribution of the dicarboxylic groups attached to the crystal surface after treatment. It is further shown that the shift depends inversely on the crystal thickness. The comparison of melting points for long time nitric acid treated PE samples with data from dicarboxylic acids has permitted the derivation of an expression for the melting temperature of longer molecular diacids.
URIhttp://hdl.handle.net/10261/78812
Appears in Collections:(CFMAC-IEM) Artículos
Files in This Item:
File Description SizeFormat 
10.1007_BF01415031.pdf346,12 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.