Study on the morphology and thermomechanical properties of poly(urethane-siloxane) networks based on hyperbranched polyester

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F13%3A00424917" target="_blank" >RIV/61389013:_____/13:00424917 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.2298/HEMIND130225022P" target="_blank" >http://dx.doi.org/10.2298/HEMIND130225022P</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2298/HEMIND130225022P" target="_blank" >10.2298/HEMIND130225022P</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study on the morphology and thermomechanical properties of poly(urethane-siloxane) networks based on hyperbranched polyester

Popis výsledku v původním jazyce

Two series of polyurethane films based on hyperbranched polyester of the second pseudo-generation (Boltorn), 4,4'-methylenediphenyl diisocyanate and two different siloxane prepolymers, ?,?-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide)(EO- -PDMS-EO) and ?,?-dihydroxypropyl-poly(dimethylsiloxane) (HP-PDMS), were prepared by two-step polymerization in solution. The influence of the type and content of soft segment on the morphology, thermomechanical and surface properties of the synthesized polyure-thanes was studied by atomic force microscopy (AFM), small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA) and water absorption measurements. It was found that these techniques confirmed existence of microphase separated morphology. Synthesized polyurethanes exhibited two glass transition temperatures and one second relaxation process. The results showed that poly-urethanes based on HP-PDMS had higher surface roug

Název v anglickém jazyce

Study on the morphology and thermomechanical properties of poly(urethane-siloxane) networks based on hyperbranched polyester

Popis výsledku anglicky

Two series of polyurethane films based on hyperbranched polyester of the second pseudo-generation (Boltorn), 4,4'-methylenediphenyl diisocyanate and two different siloxane prepolymers, ?,?-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide)(EO- -PDMS-EO) and ?,?-dihydroxypropyl-poly(dimethylsiloxane) (HP-PDMS), were prepared by two-step polymerization in solution. The influence of the type and content of soft segment on the morphology, thermomechanical and surface properties of the synthesized polyure-thanes was studied by atomic force microscopy (AFM), small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA) and water absorption measurements. It was found that these techniques confirmed existence of microphase separated morphology. Synthesized polyurethanes exhibited two glass transition temperatures and one second relaxation process. The results showed that poly-urethanes based on HP-PDMS had higher surface roug

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

<a href="/cs/project/GAP108%2F10%2F0195" target="_blank" >GAP108/10/0195: Nové vícesložkové polyurethany - příprava a charakterizace</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Hemijska industrija

ISSN

0367-598X

e-ISSN

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Svazek periodika

67

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

RS - Srbská republika

Počet stran výsledku

9

Strana od-do

871-879

Kód UT WoS článku

000329540700002

EID výsledku v databázi Scopus

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