Interactions in a blend of two polymers greatly differing in glass transition temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00360789" target="_blank" >RIV/61389013:_____/11:00360789 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/polb.22272" target="_blank" >http://dx.doi.org/10.1002/polb.22272</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/polb.22272" target="_blank" >10.1002/polb.22272</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interactions in a blend of two polymers greatly differing in glass transition temperature

Popis výsledku v původním jazyce

Blends of poly(N-methyldodecano-12-lactam) PMDL with poly(4-vinyphenol) PVPh have been studied by the DSC and ATR FTIR methods. The difference in glass transition temperature Tg between the components is 206 ?C. A single composition-dependent Tg suggestsmiscibility of the system, that is, homogeneity on the scale of about 10 nm. The Schneider's equation applied separately to low- and high-PVPh regions provides good agreement with experiment; the calculated curves cross at the point of PVPh weight fraction 0.27. In the low-PVPh region, the analysis indicates weak interactions and strong involvement of conformational entropy. In the high-PVPh region, strong specific interactions predominate and entropic effects are suppressed. According to ATR FTIR, hydrogen bonds between PVPh as proton donor and PMDL as proton acceptor induce miscibility in blends of higher PVPh content (above about 0.28 weight fraction). In low-PVPh blends, it is conformational entropy that enables intimate intermolec

Název v anglickém jazyce

Interactions in a blend of two polymers greatly differing in glass transition temperature

Popis výsledku anglicky

Blends of poly(N-methyldodecano-12-lactam) PMDL with poly(4-vinyphenol) PVPh have been studied by the DSC and ATR FTIR methods. The difference in glass transition temperature Tg between the components is 206 ?C. A single composition-dependent Tg suggestsmiscibility of the system, that is, homogeneity on the scale of about 10 nm. The Schneider's equation applied separately to low- and high-PVPh regions provides good agreement with experiment; the calculated curves cross at the point of PVPh weight fraction 0.27. In the low-PVPh region, the analysis indicates weak interactions and strong involvement of conformational entropy. In the high-PVPh region, strong specific interactions predominate and entropic effects are suppressed. According to ATR FTIR, hydrogen bonds between PVPh as proton donor and PMDL as proton acceptor induce miscibility in blends of higher PVPh content (above about 0.28 weight fraction). In low-PVPh blends, it is conformational entropy that enables intimate intermolec

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Polymer Science. Polymer Physics Edition

ISSN

0887-6266

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

1031-1040

Kód UT WoS článku

000291613500005

EID výsledku v databázi Scopus

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