Elektroreologie suspenzí močovinou modifikovaných částic poly[(glycidyl methacrylát)-co-(ethylene dimethacrylátu)] v silikonovém oleji

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F07%3A63505354" target="_blank" >RIV/70883521:28110/07:63505354 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electrorheology of silicone oil suspensions of urea-modified poly[(glycidyl methacrylate)-co-(ethylene dimethacrylate)] particles

Popis výsledku v původním jazyce

Two methods of modi&#64257;cation of poly[(glycidyl methacrylate)-co-(ethylene dimethacrylate)] microspheres with urea were examined in this electrorheological (ER) study. First, the urea functional groups were introduced by chemical modi&#64257;cation of the starting copolymer. A signi&#64257;cant increase in storage modulus of the silicone oil suspension was observed compared with the loss modulus when an electric &#64257;eld is applied. On the other hand, the ER effect in suspension of particles coated with physically bonded urea was only slightly higher than that of untreated material. This is explained by poor coating of the hydrophobic microparticle surface with hydrophilic urea. According to dielectric measurements, the interfacial polarizationwas found to be responsible for the formation of chain structure of modi&#64257;ed microspheres in the electric &#64257;eld resulting in the ER effect.

Název v anglickém jazyce

Electrorheology of silicone oil suspensions of urea-modified poly[(glycidyl methacrylate)-co-(ethylene dimethacrylate)] particles

Popis výsledku anglicky

Two methods of modi&#64257;cation of poly[(glycidyl methacrylate)-co-(ethylene dimethacrylate)] microspheres with urea were examined in this electrorheological (ER) study. First, the urea functional groups were introduced by chemical modi&#64257;cation of the starting copolymer. A signi&#64257;cant increase in storage modulus of the silicone oil suspension was observed compared with the loss modulus when an electric &#64257;eld is applied. On the other hand, the ER effect in suspension of particles coated with physically bonded urea was only slightly higher than that of untreated material. This is explained by poor coating of the hydrophobic microparticle surface with hydrophilic urea. According to dielectric measurements, the interfacial polarizationwas found to be responsible for the formation of chain structure of modi&#64257;ed microspheres in the electric &#64257;eld resulting in the ER effect.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica A. Statistical mechanics and its applications

ISSN

0378-4371

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

385

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

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EID výsledku v databázi Scopus

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