Preparation and Physicochemical Properties of Functionalized Silica/Octamethacryl-Silsesquioxane Hybrid Systems

Table 5

Dispersive and morphological characteristics of unmodified hydrated silica and silica surface modification with (3-isocyanatopropyl)triethoxysilane and N-2-(aminoethyl)-3-aminopropyltrimethoxysilane in different amounts.

Acronym	Amount of modifier (weight parts by mass)	Zetasizer Nano ZS		Mastersizer 2000
		Particle diameter; (nm)	Polydispersity index; (PdI)	Particle diameter (μm)				TEM microphotographs
				𝑑 (0.1)	𝑑 (0.5)	𝑑 (0.9)	𝐷 [4.3]
Nongrafted hydrated silica
0	—	164–531	0.937	5.91	15.40	30.64	17.18
Isocyanate silane
1A; 2A; 3A	3; 5; 10	122–396; 164–712; 255–712	0.881; 0.731; 0.825	3.70; 4.06; 4.08	14.82; 13.71; 15.02	47.96; 38.82; 44.82	21.19; 18.04; 20.33
Aminosilane
1B; 2B; 3B	3; 5; 10	342–712; 255–712; 342–825	0.781; 0.723; 0.852	4.40; 4.21; 4.52	17.80; 17.85; 18.11	45.94; 46.10; 46.15	21.98; 21.93; 22.15