They then peeled off the solid polymer and used it as a mould for methyltriethoxysilane
(MTEOS) - an agent used in glass-making.
In the present work, the hydrophopic character of the siloxane networks was enhanced by using, along with tetraethoxysilane (TEOS), methyltriethoxysilane
(MTEOS) as primary component of the siloxane precursor solution.
Suitable coupling agents include mixtures of octyltriethoxysilane, methyltriethoxysilane
, and methyltrimethoxysilane.
In our previous study, (9) we successfully prepared hard, tough, thick polysiloxane coatings by prehydrolysis of methacryloxypropylmethyldimethoxysilane (MPDS) and methyltriethoxysilane
(MTES), followed by moisture curing in the presence of aminopropyltriethoxysilane (APS).
When tetraethoxysilane (TEOS) and methyltriethoxysilane
(MTES) were used in the coating process, the coating had the hardness of a 2H pencil at the optimum condition (15).
In this article, we prepared polysilsesquioxanes via sol-gel process of methyltriethoxysilane
(MTES), 3-glycidoxypropyltrimethoxysilane (GPMS), and tetraethoxysilane (TEOS) using phytic acid, tannic acid, and 1-hydroxyethylidene-1,1-diphosphonic acid (HEDPA) (whose structures were present in Scheme 1) as the catalyst, respectively.