| Titre : |
Effects of colloidal silica on the properties of POSS-containing fluorinated poly(styrene–acrylate)/SiO2 composite materials |
| Type de document : |
texte imprimé |
| Auteurs : |
Wenbo Liao, Auteur ; Liuyong Zou, Auteur ; Shaona Zheng, Auteur ; Lili Zhao, Auteur ; Xiangxuan Huang, Auteur ; Lingyun Ye, Auteur ; Guoyu Zhong, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 107-116 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Caractérisation
Colloides
Copolymère styrène acrylate
Copolymères greffés
Dioxyde de silicium
Hydrophobie
Revêtements organiques
Rugosité
Silsesquioxanes oligomères polyhèdres
Sol-gel, Procédé
Stabilité thermique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyhedral oligomeric silsesquioxane (POSS)-containing fluorinated poly(styrene–acrylate)/SiO2 (POSS-FPSA/SiO2) composite materials were prepared by preemulsification and direct blending method. The SiO2 particles were induced aggregated onto the surface of POSS, and sol–gel processes were simultaneously carried out with addition of co-solvent to form raspberry-like structure. 29Si NMR and XRD results confirmed that POSS were successfully grafted to polymer and were evenly dispersed uniformly in polymer matrix. The average diameter of composite latexes increased from 63 to 81 nm with increasing addition of SiO2 content. AFM and WCA images confirmed that sol–gel processes were promoted by increasing addition of SiO2 content, which improved the roughness and hydrophobicity of composite films. XPS spectra displayed that two kinds of Si–O bonds existed on the surface of composite films. One was related to the Si–O groups of SiO2, and the other was attributed to the Si–O–Si groups obtained from the sol–gel processes. The peak area of the former decreased from 56.86% to 38.78%, while the latter increased from 43.14% to 62.22%. TGA curves demonstrated that the composite film exhibited better thermal stability when the SiO2 content was 10.0%. In addition, serious phase separation would decrease the thermal stability of composite films. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of POSS-FPSA/SiO2 composite materials - Characterization
- RESULTS AND DISCUSSION : The preparation and structure of POSS-FPSA SiO2 composite materials - Effects SiO2 content on the properties of POSS-FPSA/SiO2 composite materials
- Scheme : The synthetic route of PSA, POSS-FPSA, and POSS-FPSA/SiO2 |
| DOI : |
https://doi.org/10.1007/s11998-020-00384-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-020-00384-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35355 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 1 (01/2021) . - p. 107-116
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Effects of colloidal silica on the properties of POSS-containing fluorinated poly(styrene–acrylate)/SiO2 composite materials in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)
