Phase mixing and separation in polyester polyurethane studied by small-angle scattering: A polydisperse hard sphere model analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385059" target="_blank" >RIV/00216208:11320/18:10385059 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.polymer.2018.05.069" target="_blank" >https://doi.org/10.1016/j.polymer.2018.05.069</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2018.05.069" target="_blank" >10.1016/j.polymer.2018.05.069</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase mixing and separation in polyester polyurethane studied by small-angle scattering: A polydisperse hard sphere model analysis

Popis výsledku v původním jazyce

Small-angle scattering was employed to characterize the gradual phase mixing and separation of Estane 5703p, a type of polyester polyurethane, as a function of temperature (20-110 degrees C) and time (minutes to 80 days). The polymer structure was modelled by polydisperse hard spheres, and microstructure evolution of the material was inferred from the development of the fitting parameters. At temperatures higher than 40 degrees C, the scattering data indicated the mixing of hard domains (MDI-BDO) with soft matrix (PBA). The hard domain distance showed a sharp increase at 50-60 degrees C. Between 60 and 90 degrees C, a newly-observed ordering signalled the formation of a distinct mesophase with a repeat distance of 5.15 nm. Upon heating, the morphology evolution in Estane follows: domain intermixing - mesophase formation - final melting. After cooling, the domain structure partly recovered, but did not reach the original state during storage at room temperature for 80 days.

Název v anglickém jazyce

Phase mixing and separation in polyester polyurethane studied by small-angle scattering: A polydisperse hard sphere model analysis

Popis výsledku anglicky

Small-angle scattering was employed to characterize the gradual phase mixing and separation of Estane 5703p, a type of polyester polyurethane, as a function of temperature (20-110 degrees C) and time (minutes to 80 days). The polymer structure was modelled by polydisperse hard spheres, and microstructure evolution of the material was inferred from the development of the fitting parameters. At temperatures higher than 40 degrees C, the scattering data indicated the mixing of hard domains (MDI-BDO) with soft matrix (PBA). The hard domain distance showed a sharp increase at 50-60 degrees C. Between 60 and 90 degrees C, a newly-observed ordering signalled the formation of a distinct mesophase with a repeat distance of 5.15 nm. Upon heating, the morphology evolution in Estane follows: domain intermixing - mesophase formation - final melting. After cooling, the domain structure partly recovered, but did not reach the original state during storage at room temperature for 80 days.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

—

Svazek periodika

147

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

000436484100001

EID výsledku v databázi Scopus

2-s2.0-85047781890