Abstract
The flow-induced structure of immiscible polyolefin blends under steady shear flow was studied by small angle neutron scattering. The sample used was a 3:7 blend (by weight) of i-polypropylene and ethylene-octene random copolymer. At low shear rates, anisotropic scattering was observed on a two-dimensional detector in through-view measurements (incident beam perpendicular to the flow). The intensity was stronger in the direction perpendicular to the flow direction. In edge-view measurements (incident beam parallel to the flow), no anisotropy was observed. At higher shear rates ( > 50 sec -1 ) , the anisotropy became very weak but the intensity itself became rather strong. A simple explanation of these observations can be given by assuming the existence of string-like domains at low shear rates and their splitting at high shear rates. This idea can be supported by the low interfacial tension between two polyolefins.
| Original language | English |
|---|---|
| Pages (from-to) | 23-28 |
| Number of pages | 6 |
| Journal | KOBUNSHI RONBUNSHU |
| Volume | 62 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2005 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Environmental Science(all)
- Polymers and Plastics
Cite this
Flow-induced structure of immiscible polyolefin blends under steady shear flow studied by small angle neutron scattering. / Takahashi, Yoshiaki; Ukai, Yoshiaki; Seki, Motohiro; Matsushita, Yushu.
In: KOBUNSHI RONBUNSHU, Vol. 62, No. 1, 01.2005, p. 23-28.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Flow-induced structure of immiscible polyolefin blends under steady shear flow studied by small angle neutron scattering
AU - Takahashi, Yoshiaki
AU - Ukai, Yoshiaki
AU - Seki, Motohiro
AU - Matsushita, Yushu
PY - 2005/1
Y1 - 2005/1
N2 - The flow-induced structure of immiscible polyolefin blends under steady shear flow was studied by small angle neutron scattering. The sample used was a 3:7 blend (by weight) of i-polypropylene and ethylene-octene random copolymer. At low shear rates, anisotropic scattering was observed on a two-dimensional detector in through-view measurements (incident beam perpendicular to the flow). The intensity was stronger in the direction perpendicular to the flow direction. In edge-view measurements (incident beam parallel to the flow), no anisotropy was observed. At higher shear rates ( > 50 sec -1 ) , the anisotropy became very weak but the intensity itself became rather strong. A simple explanation of these observations can be given by assuming the existence of string-like domains at low shear rates and their splitting at high shear rates. This idea can be supported by the low interfacial tension between two polyolefins.
AB - The flow-induced structure of immiscible polyolefin blends under steady shear flow was studied by small angle neutron scattering. The sample used was a 3:7 blend (by weight) of i-polypropylene and ethylene-octene random copolymer. At low shear rates, anisotropic scattering was observed on a two-dimensional detector in through-view measurements (incident beam perpendicular to the flow). The intensity was stronger in the direction perpendicular to the flow direction. In edge-view measurements (incident beam parallel to the flow), no anisotropy was observed. At higher shear rates ( > 50 sec -1 ) , the anisotropy became very weak but the intensity itself became rather strong. A simple explanation of these observations can be given by assuming the existence of string-like domains at low shear rates and their splitting at high shear rates. This idea can be supported by the low interfacial tension between two polyolefins.
UR - http://www.scopus.com/inward/record.url?scp=14844356144&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=14844356144&partnerID=8YFLogxK
U2 - 10.1295/koron.62.23
DO - 10.1295/koron.62.23
M3 - Article
AN - SCOPUS:14844356144
VL - 62
SP - 23
EP - 28
JO - Kobunshi Ronbunshu
JF - Kobunshi Ronbunshu
SN - 0386-2186
IS - 1
ER -