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AuthorAdesina A.A.
AuthorNasser M.N.
AuthorTeixeira P.
AuthorHilliou L.
AuthorCovas J.A.
AuthorHussein I.A.
Available date2022-04-25T10:59:49Z
Publication Date2015
Publication NameChemical Engineering Research and Design
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.cherd.2015.05.018
URIhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84938237539&doi=10.1016%2fj.cherd.2015.05.018&partnerID=40&md5=d96e5bafb4f06979f430db16a3f7bb5e
URIhttp://hdl.handle.net/10576/30430
AbstractWall slip is often seen as a source of flow enhancement and can play a significant role during certain melt instabilities in polymer processing. In the present investigation, the effect of organoclay on the wall slip of high density polyethylene (HDPE) was investigated with the aid of particle image velocimetry (PIV). The study showed that organoclay did not cause significant wall slip during low shear testing in a parallel plate rheometer. However, PIV measurements showed that organoclay induced more wall slip during continuous extrusion of HDPE. Also, reduction in the extrusion pressure and elimination/postponement of melt instabilities in HDPE during continuous extrusion were observed. There was good agreement between the flow curves obtained from PIV and rheological measurements. In the presence of high shear flow, organoclay was suggested to align in the flow direction and migrate towards the die wall. The alignment and migration affect the bulk rheological properties (increase in shear thinning) and surface properties (increase in wall slip) of HDPE
SponsorThe authors are grateful to King Abdul Aziz City for Science and Technology (KACST) for providing financial support for this research under research Grant # AT-27-107 . We also acknowledge the support of King Fahd University of Petroleum and Minerals (KFUPM).
Languageen
PublisherInstitution of Chemical Engineers
SubjectExtrusion
Flow visualization
High density polyethylenes
Non Newtonian flow
Organoclay
Rheology
Shear thinning
Velocimeters
Velocity measurement
Continuous extrusion
High density polyethylene(HDPE)
Organoclay nanocomposites
Parallel plate rheometers
Particle image velocimetries
Rheological measurements
Rheological property
Wall slip
Shear flow
TitleRheology of organoclay assisted extrusion of HDPE using Particle Image Velocimetry
TypeArticle
Pagination113-125
Volume Number100
dc.accessType Abstract Only


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