Minimum concentration of poly(ethylene oxide) in water solution ensuring good quality of electrospun nanofibres

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F19%3A00504046" target="_blank" >RIV/67985874:_____/19:00504046 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Minimum concentration of poly(ethylene oxide) in water solution ensuring good quality of electrospun nanofibres
Original language description
Successful electrospinning of polymer solutions is limited among other parameters by a range of concentration of the polymer used in a solvent. Too low concentration indicates minimum of contacts between the individual macromolecules and hence, no possibility to create nanofibres. The question is how to estimate the lowest value of concentration for specific materials above which the nanofibrous mat can be obtained (under otherwise fixed other parameters such as the process ones). One of the indications is given by a course of specific viscosity. For a solution of poly(ethylene oxide) in water we can approximate dependence of the specific viscosity on concentration by two or three linear segments depending whether log-log or semi-log coordinates are used. The points of line refraction have a correspondence with an existence and quality of electrospun nanofibres as will be demonstrated.
Czech name
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Czech description
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Project
<a href="/en/project/GA17-26808S" target="_blank" >GA17-26808S: Characterization of polymer melts and solutions by means of constitutive equations</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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