Date
2012-08-30Author
Grigalovica, AgneseBartule, MadaraZicans, JanisMeri, Remo MerijsHeim, Hans-PeterBerger, ChristianSubject
620 Engineering 660 Chemical engineering PolyoxymethyleneCopolymereGemischRheologische EigenschaftDynamisches VerhaltenMetadata
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Aufsatz
Relaxation properties of polyoxymethylene and ethylene–octene copolymer blend in solid and melt states
Abstract
Rheological properties of polyoxymethylene (POM) and ethylene–octene copolymer (EOC) in solid and melt states were investigated. Blends were prepared with a twin screw extruder at broad component wt-to-wt ratios (10, 30, 50, 70, 90 wt% of EOC). The morphology as well as calorimetric, rheological, and elastic properties of the blends were studied. The investigation showed that POM/EOC blends were heterogeneous in nature and had a broad phase transition region between 30 and 70 wt% of POM. Because during processing droplet breakup is enhanced for EOC-rich systems, respective blends show “better” morphology with smaller particle sizes. It was, however, observed that rheological and dynamic characteristics (such as storage E¢ and loss E² modules as well as shear elastic G¢ and viscous G² modules) were highly influenced by intrinsic incompatibility of POM and EOC. Besides, also the crystallization specifics of the investigated blends influenced their E¢ and E².
Citation
In: Proceedings of the Estonian Academy of Sciences Volume 61 / Issue 3 (2012-08-30) , S. 200-206 ; EISSN 1736-7530Citation
@article{doi:10.17170/kobra-202101182988,
author={Grigalovica, Agnese and Bartule, Madara and Zicans, Janis and Meri, Remo Merijs and Heim, Hans-Peter and Berger, Christian},
title={Relaxation properties of polyoxymethylene and ethylene–octene copolymer blend in solid and melt states},
journal={Proceedings of the Estonian Academy of Sciences},
year={2012}
}
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2021-01-20T11:19:58Z 2021-01-20T11:19:58Z 2012-08-30 doi:10.17170/kobra-202101182988 http://hdl.handle.net/123456789/12425 eng Namensnennung-Nicht-kommerziell 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ polyoxymethylene ethylene-octene copolymer blends rheological properties dynamic properties 620 660 Relaxation properties of polyoxymethylene and ethylene–octene copolymer blend in solid and melt states Aufsatz Rheological properties of polyoxymethylene (POM) and ethylene–octene copolymer (EOC) in solid and melt states were investigated. Blends were prepared with a twin screw extruder at broad component wt-to-wt ratios (10, 30, 50, 70, 90 wt% of EOC). The morphology as well as calorimetric, rheological, and elastic properties of the blends were studied. The investigation showed that POM/EOC blends were heterogeneous in nature and had a broad phase transition region between 30 and 70 wt% of POM. Because during processing droplet breakup is enhanced for EOC-rich systems, respective blends show “better” morphology with smaller particle sizes. It was, however, observed that rheological and dynamic characteristics (such as storage E¢ and loss E² modules as well as shear elastic G¢ and viscous G² modules) were highly influenced by intrinsic incompatibility of POM and EOC. Besides, also the crystallization specifics of the investigated blends influenced their E¢ and E². open access Grigalovica, Agnese Bartule, Madara Zicans, Janis Meri, Remo Merijs Heim, Hans-Peter Berger, Christian doi:10.3176/proc.2012.3.09 Polyoxymethylene Copolymere Gemisch Rheologische Eigenschaft Dynamisches Verhalten publishedVersion EISSN 1736-7530 Issue 3 Proceedings of the Estonian Academy of Sciences 200-206 Volume 61 false
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