Tuning the carbon content of silicon carbonitride SiCN(O) materials obtained from hydrosilylation-derived polysilazanes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00603463" target="_blank" >RIV/61389013:_____/25:00603463 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0955221924010501?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221924010501?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2024.117177" target="_blank" >10.1016/j.jeurceramsoc.2024.117177</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tuning the carbon content of silicon carbonitride SiCN(O) materials obtained from hydrosilylation-derived polysilazanes

Popis výsledku v původním jazyce

Polymer-derived silicon carbonitride SiCN(O) materials with tunable carbon content were obtained from polysilazanes synthesized from silazane monomers, and carbon-containing crosslinkers via the hydrosilylation reaction. The polysilazanes were characterized by ATR-FTIR and Raman spectroscopy in terms of the presence of various functional groups. Three polysilazanes were chosen as preceramic precursors for the materials, and pyrolyzed at 800°C in argon. DRIFT spectroscopy and 29Si MAS NMR confirmed the presence of Si–N bonds in the materials, and Si–C bonds in one sample only, as well as oxygen contamination in the form of Si–O bonds in all samples. Consequently, the obtained materials should be referred to as SiCN(O). Raman spectroscopy and 13C MAS NMR indicate that the materials contain the free carbon phase. Elemental analysis revealed that the carbon content in SiCN(O) materials can be adjusted from 25.7 at% to 45.3 at% by selecting appropriate silazane monomers and crosslinkers.

Název v anglickém jazyce

Tuning the carbon content of silicon carbonitride SiCN(O) materials obtained from hydrosilylation-derived polysilazanes

Popis výsledku anglicky

Polymer-derived silicon carbonitride SiCN(O) materials with tunable carbon content were obtained from polysilazanes synthesized from silazane monomers, and carbon-containing crosslinkers via the hydrosilylation reaction. The polysilazanes were characterized by ATR-FTIR and Raman spectroscopy in terms of the presence of various functional groups. Three polysilazanes were chosen as preceramic precursors for the materials, and pyrolyzed at 800°C in argon. DRIFT spectroscopy and 29Si MAS NMR confirmed the presence of Si–N bonds in the materials, and Si–C bonds in one sample only, as well as oxygen contamination in the form of Si–O bonds in all samples. Consequently, the obtained materials should be referred to as SiCN(O). Raman spectroscopy and 13C MAS NMR indicate that the materials contain the free carbon phase. Elemental analysis revealed that the carbon content in SiCN(O) materials can be adjusted from 25.7 at% to 45.3 at% by selecting appropriate silazane monomers and crosslinkers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

1873-619X

Svazek periodika

45

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

117177

Kód UT WoS článku

001398898400001

EID výsledku v databázi Scopus

2-s2.0-85214339004