Reactivity of the tin homolog of POSS, butylstannoxane dodecamer, in oxygen-induced crosslinking reactions with an organic polymer matrix: study of long-time behavior

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00444156" target="_blank" >RIV/61389013:_____/15:00444156 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2015.04.020" target="_blank" >http://dx.doi.org/10.1016/j.polymdegradstab.2015.04.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2015.04.020" target="_blank" >10.1016/j.polymdegradstab.2015.04.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reactivity of the tin homolog of POSS, butylstannoxane dodecamer, in oxygen-induced crosslinking reactions with an organic polymer matrix: study of long-time behavior

Popis výsledku v původním jazyce

The chemical activity of the heavier POSS homolog, n-butylstannoxane dodecamer cage, in an epoxy matrix containing polopropylene oxide (PPO) chains was studied in detail, especially the long-time development of the effect and its limits in time at different concentrations. A multi-method investigation was carried out, employing spectrometric analysis of chemical composition (NMR, IR), TEM, thermogravimetry, weight loss analysis during isothermal oxidation at 180 °C, as well as dynamic-mechanical thermalanalysis (DMTA) of intact and of oxidized epoxy/stannoxane hybrids. The PPO segments of the matrix were found to be preferentially degraded by oxidation or by anaerobic pyrolysis, while at the same time these segments are the sites of crosslinking reactions with stannoxane, which counteract matrix degradation. It was demonstrated, that the cages undergo repeated reactions on the Sn atoms, and remain finely dispersed and well-accessible even after long oxidation times. The repeated react

Název v anglickém jazyce

Reactivity of the tin homolog of POSS, butylstannoxane dodecamer, in oxygen-induced crosslinking reactions with an organic polymer matrix: study of long-time behavior

Popis výsledku anglicky

The chemical activity of the heavier POSS homolog, n-butylstannoxane dodecamer cage, in an epoxy matrix containing polopropylene oxide (PPO) chains was studied in detail, especially the long-time development of the effect and its limits in time at different concentrations. A multi-method investigation was carried out, employing spectrometric analysis of chemical composition (NMR, IR), TEM, thermogravimetry, weight loss analysis during isothermal oxidation at 180 °C, as well as dynamic-mechanical thermalanalysis (DMTA) of intact and of oxidized epoxy/stannoxane hybrids. The PPO segments of the matrix were found to be preferentially degraded by oxidation or by anaerobic pyrolysis, while at the same time these segments are the sites of crosslinking reactions with stannoxane, which counteract matrix degradation. It was demonstrated, that the cages undergo repeated reactions on the Sn atoms, and remain finely dispersed and well-accessible even after long oxidation times. The repeated react

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP108%2F11%2F2151" target="_blank" >GAP108/11/2151: Nové nanokompozitní pryskyřice obsahující funkcionalizované stannoxanové nanočástice</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Polymer Degradation and Stability

ISSN

0141-3910

e-ISSN

—

Svazek periodika

118

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

20

Strana od-do

147-166

Kód UT WoS článku

000357243500017

EID výsledku v databázi Scopus

2-s2.0-84930641837