Influence of nanofillers on the properties of siloxane elastomers

Hemijska Industrija

Cakić Jelena¹  Budinski-Simendić Jaroslava²  Manjenčić Darko²  Ristić Ivan²  Vukić Nevena²  Radusin Tanja³  Seitsonen Jani⁴ 

[1] Faculty of Medicine, University of Belgrade, Belgrade, Serbia;Faculty of Technology Novi Sad, University of Novi Sad, Novi Sad, Serbia;Institute of Food Technology Novi Sad, University of Novi Sad, Novi Sad, Serbia;Nanomicroscopy Center, Aalto University, Espoo, Finland;

关键词: nanocomposites;    vinyl siloxane;    thermal properties;    polymer network;    elastomers;   

DOI  :  10.2298/HEMIND191011011M

来源: DOAJ

【 摘 要 】

In this study, the influence of nanosilicon(IV)-oxide (with hydrophobic and hydrophilic functionalized surfaces) on the properties of siloxane elastomers was studied. The elastomers were prepared from vinyl and hydrogen oligosiloxanes, while the nanocomposites were obtained by addition of nanofillers at different concentrations (1, 5, 10 and 20 wt%). The chemical structure of the obtained materials was analyzed by Fourier transform infrared spectroscopy. Transmission electron microscopy confirmed good dispersion of the hydrophobic filler within the polymer matrix, while the hydrophilic filler formed a net on the siloxane sample. Type of the filler modification did not affect hardness of the siloxane hybrid materials, while the samples with the highest content of hydrophobic nanosilica have shown the highest value of tensile strength. Influence of the nanosilica type on thermal degradation of elastomeric materials was investigated by using thermogravimetric analysis, while the influence of the fillers on the phase transition temperature was analyzed by differential scanning calorimetry. Lower compatibility of the hydrophobic matrix and hydrophilic filler caused a decrease in the crystalline melting temperature with the lowest value determined for the sample with the highest filler loading. Increase in the nanofiller content resulted in the improved thermal stability of the obtained hybrid materials.

【 授权许可】

Unknown