Chemically imidized semi-alicyclic polyimides: the effect of catalyst type and imidization temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920488" target="_blank" >RIV/00216275:25310/23:39920488 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10853-023-08936-z" target="_blank" >https://link.springer.com/article/10.1007/s10853-023-08936-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-023-08936-z" target="_blank" >10.1007/s10853-023-08936-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemically imidized semi-alicyclic polyimides: the effect of catalyst type and imidization temperature

Popis výsledku v původním jazyce

Polyimides are a group of polymers with excellent thermal and mechanical properties. However, generally, they exhibit brown coloration due to charge transfer interactions between diamine donor and dianhydride acceptor moieties. In this study, semi-alicyclic polyimides derived from cyclohexane tetracarboxylic dianhydride and 4,4 &apos;-oxydianiline were prepared using a two-step method, where the imidization step proceeded via a chemical route. The effects of the catalyst type (quinoline, triethylamine, and 1,4-diazabicyclo(2.2.2)octane (DABCO)) and reaction temperature (120, 140, and 160 C-degrees) on the imidization process were evaluated using infrared spectroscopy and nuclear magnetic resonance spectroscopy. The prepared polyimides&apos; thermal, mechanical, and optical properties were compared with those synthesized via standard thermal imidization. Polyimide films possessing favorable mechanical properties, thermal stability, and good optical transparency were prepared via a simple preparation route based on chemical imidization using the triethylamine catalyst at the reaction temperature of 160 C-degrees, which was shown to be a promising way for the PI preparation on an industrial scale.

Název v anglickém jazyce

Chemically imidized semi-alicyclic polyimides: the effect of catalyst type and imidization temperature

Popis výsledku anglicky

Polyimides are a group of polymers with excellent thermal and mechanical properties. However, generally, they exhibit brown coloration due to charge transfer interactions between diamine donor and dianhydride acceptor moieties. In this study, semi-alicyclic polyimides derived from cyclohexane tetracarboxylic dianhydride and 4,4 &apos;-oxydianiline were prepared using a two-step method, where the imidization step proceeded via a chemical route. The effects of the catalyst type (quinoline, triethylamine, and 1,4-diazabicyclo(2.2.2)octane (DABCO)) and reaction temperature (120, 140, and 160 C-degrees) on the imidization process were evaluated using infrared spectroscopy and nuclear magnetic resonance spectroscopy. The prepared polyimides&apos; thermal, mechanical, and optical properties were compared with those synthesized via standard thermal imidization. Polyimide films possessing favorable mechanical properties, thermal stability, and good optical transparency were prepared via a simple preparation route based on chemical imidization using the triethylamine catalyst at the reaction temperature of 160 C-degrees, which was shown to be a promising way for the PI preparation on an industrial scale.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/EF17_048%2F0007376" target="_blank" >EF17_048/0007376: Senzory s vysokou citlivostí a materiály s nízkou hustotou na bázi polymerních nanokompozitů-NANOMAT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science

ISSN

0022-2461

e-ISSN

1573-4803

Svazek periodika

58

Číslo periodika v rámci svazku

39

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

15542-15557

Kód UT WoS článku

001086533900001

EID výsledku v databázi Scopus

2-s2.0-85174150017