Space charge distribution and crystalline structure in low density polyethylene (LDPE) blended with high density polyethylene (HDPE)
The space charge distribution in polyethylene blends under direct current electrical field was measured by a pulsed electro‐acoustic method. It was found that blending LDPE with 0.5 wt% HDPE decreased the amount of accumulated space charges and improved their distribution. Small‐angle light scatteri...
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Published in | Polymer international Vol. 54; no. 2; pp. 465 - 470 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Chichester, UK
John Wiley & Sons, Ltd
01.02.2005
Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | The space charge distribution in polyethylene blends under direct current electrical field was measured by a pulsed electro‐acoustic method. It was found that blending LDPE with 0.5 wt% HDPE decreased the amount of accumulated space charges and improved their distribution. Small‐angle light scattering and differential scanning calorimetry showed that crystallization of LDPE/HDPE started at higher temperature than virgin LDPE, and the sizes of LDPE/HDPE spherulites were smaller than that of LDPE. HDPE plays a role on nucleation during the crystallization process. Crystalline form was investigated by wide‐angle X‐ray diffraction and the results indicate that the crystal form did not change after blending. The reduction of space charges in the blended sample can be explained as the result of the dissipation of charges through boundary regions of smaller spherulites. Copyright © 2004 Society of Chemical Industry |
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Bibliography: | ark:/67375/WNG-XMC11S1S-M istex:C5E64F010634CC2893AD042F86F148DE72C69234 ArticleID:PI1727 Special Funds for Major State Basic Research Projects - No. G1999064800 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0959-8103 1097-0126 |
DOI: | 10.1002/pi.1727 |