Studies of the thermal and mechanical properties of poly(urethane-siloxane)s cross-linked by hyperbranched polyesters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F12%3A00380375" target="_blank" >RIV/61389013:_____/12:00380375 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/ie300927z" target="_blank" >http://dx.doi.org/10.1021/ie300927z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/ie300927z" target="_blank" >10.1021/ie300927z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Studies of the thermal and mechanical properties of poly(urethane-siloxane)s cross-linked by hyperbranched polyesters

Popis výsledku v původním jazyce

Polyurethane networks based on Boltorn hyperbranched polyesters (HBPs) of different pseudogenerations as cross-linkers, ?,?-dihydroxy(ethylene oxidepoly(dimethylsiloxane)ethylene oxide) (EOPDMSEO) and 4,4´-methylenediphenyl diisocyanate were synthesizedusing a two-step polymerization reaction in solution. The influence of the pseudogeneration number of Boltorn HBPs on the thermomechanical and thermal properties and morphologies of polyurethane networks was investigated using FTIR, DMTA, TGA, hardness measurements, SEM, and SAXS. Synthesized polyurethanes showed higher cross-linking density and hardness and lower thermal stability with increasing pseudogeneration number of HBP. Samples with lower EOPDMSEO content exhibited slightly better thermal stability and higher hardness. All utilized characterization methods yielded consistent results and confirmed the existence of microphase separated morphology with the appearance of certain microphase mixing between segments as the pseudogener

Název v anglickém jazyce

Studies of the thermal and mechanical properties of poly(urethane-siloxane)s cross-linked by hyperbranched polyesters

Popis výsledku anglicky

Polyurethane networks based on Boltorn hyperbranched polyesters (HBPs) of different pseudogenerations as cross-linkers, ?,?-dihydroxy(ethylene oxidepoly(dimethylsiloxane)ethylene oxide) (EOPDMSEO) and 4,4´-methylenediphenyl diisocyanate were synthesizedusing a two-step polymerization reaction in solution. The influence of the pseudogeneration number of Boltorn HBPs on the thermomechanical and thermal properties and morphologies of polyurethane networks was investigated using FTIR, DMTA, TGA, hardness measurements, SEM, and SAXS. Synthesized polyurethanes showed higher cross-linking density and hardness and lower thermal stability with increasing pseudogeneration number of HBP. Samples with lower EOPDMSEO content exhibited slightly better thermal stability and higher hardness. All utilized characterization methods yielded consistent results and confirmed the existence of microphase separated morphology with the appearance of certain microphase mixing between segments as the pseudogener

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

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

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Svazek periodika

51

Číslo periodika v rámci svazku

33

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

10824-10832

Kód UT WoS článku

000307698200010

EID výsledku v databázi Scopus

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