Small-angle neutron scattering investigation of polyurethane aged in dry and wet air

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10285480" target="_blank" >RIV/00216208:11320/14:10285480 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3144/expresspolymlett.2014.38" target="_blank" >http://dx.doi.org/10.3144/expresspolymlett.2014.38</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3144/expresspolymlett.2014.38" target="_blank" >10.3144/expresspolymlett.2014.38</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Small-angle neutron scattering investigation of polyurethane aged in dry and wet air

Popis výsledku v původním jazyce

The microstructures of Estane 5703 aged at 70 degrees C in dry and wet air have been studied by small-angle neutron scattering. The samples were swollen in deuterated toluene for enhancing the contrast. The scattering data show the characteristic domainstructure of polyurethanes consisting of soft and hard segments. Debye-Anderson-Brumberger function used with hard sphere structure factor, and the Teubner-Strey model are used to analyze the two-phase domain structure of the polymer. The combined effects of temperature and humidity have a strong disruption effect on the microstructures of Estane. For the sample aged at 70 degrees C in wet air for 1 month, the domain size, described by the correlation length, increases from 2.3 to 3.8 nm and their distance, expressed by hard-sphere interaction radius, increases from 8.4 to 10.6 nm. The structure development is attributed to degradation of polymer chains as revealed by gel permeation chromatography. The hydrolysis of ester links on polym

Název v anglickém jazyce

Small-angle neutron scattering investigation of polyurethane aged in dry and wet air

Popis výsledku anglicky

The microstructures of Estane 5703 aged at 70 degrees C in dry and wet air have been studied by small-angle neutron scattering. The samples were swollen in deuterated toluene for enhancing the contrast. The scattering data show the characteristic domainstructure of polyurethanes consisting of soft and hard segments. Debye-Anderson-Brumberger function used with hard sphere structure factor, and the Teubner-Strey model are used to analyze the two-phase domain structure of the polymer. The combined effects of temperature and humidity have a strong disruption effect on the microstructures of Estane. For the sample aged at 70 degrees C in wet air for 1 month, the domain size, described by the correlation length, increases from 2.3 to 3.8 nm and their distance, expressed by hard-sphere interaction radius, increases from 8.4 to 10.6 nm. The structure development is attributed to degradation of polymer chains as revealed by gel permeation chromatography. The hydrolysis of ester links on polym

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Express Polymer Letters

ISSN

1788-618X

e-ISSN

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Svazek periodika

8

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

HU - Maďarsko

Počet stran výsledku

7

Strana od-do

345-351

Kód UT WoS článku

000332623200006

EID výsledku v databázi Scopus

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