Infuence of Microstructure in Drug Release Behavior of Silica Nanocapsules

Table 1

Textural properties of beta zeolites unloaded and IBU.

Material	Loading condition	BET area m^2/g	Δ Area (%)	Langm. area (m^2/g)	Δ area (%)	Micro. vol. (cm^3/g)	Δ pore vol (%)	Micropore area (m^2/g)	Ext. area (m^2/g)	Part. size (nm)	Si/Al
Zeolite beta sample a	Unloaded	660	27	946	36	0.27	37	584	77	200	28
	IBU loaded	479		602		0.17		415	64
Zeolite beta sample b	Unloaded	513	27	707	14	0.23	9	494	28	500	10
	IBU loaded	373		616		0.21		349	19
Zeolite beta sample c	Unloaded	443	30	588	30	0.19	47	392	51	500	100
	IBU loaded	310		411		0.10		275	23