This title appears in the Scientific Report :
2003
Please use the identifier:
http://hdl.handle.net/2128/2854 in citations.
Please use the identifier: http://dx.doi.org/10.1107/S0021889803008525 in citations.
Co-crystallization of poly(ethylene-butene) copolymers and paraffin molecules in decane studied with small-angle neutron scattering
Co-crystallization of poly(ethylene-butene) copolymers and paraffin molecules in decane studied with small-angle neutron scattering
PEB-n semicrystalline poly( ethylene - butene) random copolymers may become important in industrial applications because of their capability to modify the paraffin crystals and to improve the viscoelastic properties of crude oil and refined fuel. The copolymer - paraffin interaction is rather comple...
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Personal Name(s): | Radulescu, A. |
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Schwahn, D. / Richter, D. / Fetters, L. J. | |
Contributing Institute: |
Neutronenstreuung; IFF-NST |
Published in: | Journal of applied crystallography, 36 (2003) S. 995 - 999 |
Imprint: |
Copenhagen
Munksgaard
2003
|
Physical Description: |
995 - 999 |
DOI: |
10.1107/S0021889803008525 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Applied Crystallography
36 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1107/S0021889803008525 in citations.
PEB-n semicrystalline poly( ethylene - butene) random copolymers may become important in industrial applications because of their capability to modify the paraffin crystals and to improve the viscoelastic properties of crude oil and refined fuel. The copolymer - paraffin interaction is rather complex and is not yet understood. Therefore, these polymers may also be of much interest in basic research. Systematic small-angle neutron scattering investigations of different polymer - paraffin systems have shown that PEB-n copolymers are selective in their paraffin-modification capacity, depending on the crystalline degree which is tuned by the number 'n' of ethyl side branches/100 backbone C atoms. Two mechanisms of polymer - paraffin interaction have been identified: on the one hand, co-crystallization of the paraffin and copolymer within thin platelets occurs as a consequence of a good fit between the self-assembling properties of the investigated polymer/paraffin pairs (PEB-7.5/C-36 and PEB-11/C-24); on the other hand, primordial polymer aggregates act as a template for a subsequent paraffin crystallization when the polymer has a higher self-assembling point (PEB-7.5/C-24) than the paraffin. Both mechanisms were found for the PEB-7.5/C-30 mixture. |