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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Name of the periodical

Express Polymer Letters

ISSN

1788-618X

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

5

Country of publishing house

HU - HUNGARY

Number of pages

7

Pages from-to

345-351

UT code for WoS article

000332623200006

EID of the result in the Scopus database

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