On the non-newtonian viscous behavior of polymer melts in terms of temperature and pressure-dependent hole fraction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F14%3A43871784" target="_blank" >RIV/70883521:28610/14:43871784 - isvavai.cz</a>
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1002/app.40540/abstract;jsessionid=B9DD4558AAE0C712844E91A15E287165.f03t04" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/app.40540/abstract;jsessionid=B9DD4558AAE0C712844E91A15E287165.f03t04</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/app.40540" target="_blank" >10.1002/app.40540</a>
Alternative languages
Result language
angličtina
Original language name
On the non-newtonian viscous behavior of polymer melts in terms of temperature and pressure-dependent hole fraction
Original language description
A new theoretical non-Newtonian viscosity model is developed by taking the fractional series expansion of Eyring's shearing strain rate. A broad range of experimental rheological data of various polymer melts including polyethylenes, polypropylene, polystyrene, poly (methyl methacrylate), and polycarbonate are fitted well using the proposed model. From the model; zero shear, constant shear-stress and constant shear-rate viscosities are derived as a linear function of viscosity related quantity, Yh, called "thermo-occupancy function" and their coefficients are discussed in detail. The thermo-occupancy function is expressed in terms of temperature and structural vacancies such as hole fraction computed from the Simha-Somcynsky Hole Theory (SS). In addition, the derivative of the logarithm of viscosities with respect to the hole fraction, named as viscoholibility, is observed decreases with the increasing hole fraction.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JP - Industrial processes and processing
OECD FORD branch
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Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Applied Polymer Science
ISSN
0021-8995
e-ISSN
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Volume of the periodical
131
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
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UT code for WoS article
000336456400071
EID of the result in the Scopus database
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