Effects of colloidal silica on the properties of POSS-containing fluorinated poly(styrene–acrylate)/SiO2 composite materials

Polyhedral oligomeric silsesquioxane (POSS)-containing fluorinated poly(styrene–acrylate)/SiO 2 (POSS-FPSA/SiO 2 ) composite materials were prepared by preemulsification and direct blending method. The SiO 2 particles were induced aggregated onto the surface of POSS, and sol–gel processes were simul...

Full description

Saved in:
Bibliographic Details
Published in:JCT research 2021, Vol.18 (1), p.107-116
Main Authors: Liao, Wenbo, Zou, Liuyong, Zheng, Shaona, Zhao, Lili, Huang, Xiangxuan, Ye, Lingyun, Zhong, Guoyu
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Composite materials
Corrosion and Coatings
Fluorination
Hydrophobicity
Industrial Chemistry/Chemical Engineering
Materials Science
NMR
Nuclear magnetic resonance
Phase separation
Polyhedral oligomeric silsesquioxane
Polymer matrix composites
Polymer Sciences
Polymers
Polystyrene resins
Silicon dioxide
Sol-gel processes
Styrenes
Surfaces and Interfaces
Thermal stability
Thin Films
Tribology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polyhedral oligomeric silsesquioxane (POSS)-containing fluorinated poly(styrene–acrylate)/SiO 2 (POSS-FPSA/SiO 2 ) composite materials were prepared by preemulsification and direct blending method. The SiO 2 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. 29 Si 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 SiO 2 content. AFM and WCA images confirmed that sol–gel processes were promoted by increasing addition of SiO 2 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 SiO 2 , 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 SiO 2 content was 10.0%. In addition, serious phase separation would decrease the thermal stability of composite films.
ISSN:1547-0091
1935-3804
2168-8028
DOI:10.1007/s11998-020-00384-7