Coalescence during annealing of quiescent immiscible polymer blends

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00358512" target="_blank" >RIV/61389013:_____/11:00358512 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.e-polymers.org/journal/papers/bdimzoski_010311.pdf" target="_blank" >http://www.e-polymers.org/journal/papers/bdimzoski_010311.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Coalescence during annealing of quiescent immiscible polymer blends

Popis výsledku v původním jazyce

Coalescence during annealing of quiescent immiscible polymer blends, containing polypropylene matrix and different amount of ethylene-propylene copolymer (EPR) as dispersed phase, was studied. Comparison of experimental results with available coalescencetheories revealed that changes in the phase structure after 20 min annealing can be precisely estimated using the approximate theory of coalescence induced by van der Waals forces and considering drainage of the matrix film between spherical droplets. All results evidenced growth of the EPR droplet size with the annealing time and temperature; increase in the content of dispersed phase contributed to higher growth rate of the dispersed phase, more pronounced at the coalescence origin. Anisometry of theEPR droplets and droplet shape relaxation were perceived, both interfering the course of coalescence. Enhanced elasticity of examined blends at low frequencies and positive deviation of the complex viscosity from the linear mixing rules

Název v anglickém jazyce

Coalescence during annealing of quiescent immiscible polymer blends

Popis výsledku anglicky

Coalescence during annealing of quiescent immiscible polymer blends, containing polypropylene matrix and different amount of ethylene-propylene copolymer (EPR) as dispersed phase, was studied. Comparison of experimental results with available coalescencetheories revealed that changes in the phase structure after 20 min annealing can be precisely estimated using the approximate theory of coalescence induced by van der Waals forces and considering drainage of the matrix film between spherical droplets. All results evidenced growth of the EPR droplet size with the annealing time and temperature; increase in the content of dispersed phase contributed to higher growth rate of the dispersed phase, more pronounced at the coalescence origin. Anisometry of theEPR droplets and droplet shape relaxation were perceived, both interfering the course of coalescence. Enhanced elasticity of examined blends at low frequencies and positive deviation of the complex viscosity from the linear mixing rules

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

—

Projekt

<a href="/cs/project/IAA200500903" target="_blank" >IAA200500903: Vliv koalescence a krystalizace na vývoj fázové struktury při chlazení polymerních směsí.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

E-Polymers

ISSN

1618-7229

e-ISSN

—

Svazek periodika

-

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000288656300002

EID výsledku v databázi Scopus

—