Table 1.

FTIR interpretation of CBZ SLN comparative to pure drug physical mixture and polymers

Functional group	Drug	SLN formulation	Physical mixture	Tristearin	Phospholipon 80 H
N-H stretch	3464 cm-1	3444.8 cm-1	3464.15 cm-1	Absent	Absent
C = 0 stretch	1677 cm-1	1635.64 cm-1	1678.07 cm-1	Absent	Absent
Aromatic C-H stretch	3080.75 cm-1	Absent	2954.95 cm-1	2954.95 cm-1	2954.95 cm-1
C = C stretch	1605 cm-1	1635.64,1558.48 cm-1	1604.77 cm-1	Absent	Absent
C≡N	1384.89 cm-1	1373.32 cm-1	1384.89 cm-1	Absent	Absent
CHO aldehydic group	Absent	1732.80 cm-1	1735.93 cm-1	1728.22 cm-1	1725.92 cm-1
Methylene C-H asym stretch	Absent	Absent	2916.37 cm-1	2914.44 cm-1	2916.37 cm-1
Polymeric	Absent	3444.87 cm-1	3280.92 cm-1	Absent	3398.57 cm-1
					3377.26 cm-1
O-H stretch		3419.97 cm-1			3281.93 cm-1