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Improvement of melt spinning properties and conductivity of immiscible polypropylene/polystyrene blends containing carbon black by addition of styrene-ethylene-butene-styrene block copolymer
RISE - Research Institutes of Sweden, Swerea, Swerea IVF.
Chalmers University of Technology.
Chalmers University of Technology.
Swerea IVF Institute of Research.ORCID iD: 0000-0002-2679-3307
2011 (English)In: Polymer Engineering and Science, ISSN 0032-3888, E-ISSN 1548-2634, Vol. 51, no 6, 1165-1169 p.Article in journal (Refereed) Published
Abstract [en]

Conducting polymeric materials prepared from immiscible blends, such as polypropylene (PP)/polystyrene (PS), together with carbon black (CB), are known to have a relatively high electrical conductivity, because of a selective distribution of CB (double percolation). Melt spinning of immiscible blends containing CB has, however, not been extensively reported on previously. An immiscible 1:1 blend of PP and PS to which 4 wt% CB was added exhibited a very low melt draw-down ratio at rupture compared wit PP with the same content of CB. By adding 5 wt% SEBS (styrene-ethylene-butene-styrene block copolymer), the ultimate melt draw-down ratio increased about 10 times, which made the material more suitable for melt spinning. As-extruded samples of the immiscible blends (with CB) did not have higher electrical conductivities than PP/CB. A heat treatment increased the conductivity of immiscible PP/PS/CB composites, and longer treatment times and higher temperatures promoted the conductivity. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers.

Place, publisher, year, edition, pages
2011. Vol. 51, no 6, 1165-1169 p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13361DOI: 10.1002/pen.21828Scopus ID: 2-s2.0-79955902444OAI: oai:DiVA.org:ri-13361DiVA: diva2:973567
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-08-09Bibliographically approved

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