Table 2.

Apparent contact angle measurements with respect to time using sessile drop technique of film-coated tablets. Values equal to and below 90° correspond to increasingly hydrophilic surfaces in contrast to values above 90 corresponding to relatively more hydrophobic surfaces (un-wetting systems). Measurements were taken in triplicate and reported as mean value ± standard deviation. * The immediate apparent contact angle was recorded as the instant stable droplet contact on the tablet surface. HPMC: hydroxypropyl methylcellulose; PVA: polyvinyl alcohol.

Formulation	Immediate *		10 s		20 s
	Mean	Std	Mean	Std	Mean	Std
Uncoated	0	0	0	0	0	0
Kollicoat® IR	97.17	1.46	89.92	1.59	83.32	1.33
Opadry® EZ	91.64	1.83	87.43	1.34	81.03	1.37
PVA	96.24	1.46	90.53	1.49	88.62	1.23
HPMC	94.28	1.21	89.24	1.36	86.13	1.16
C 1% w/w	93.06	1.92	88.73	1.21	75.77	1.31
C 3% w/w	88.67	1.24	81.97	1.25	73.03	1.83
Ge 1% w/w	98.37	1.37	93.07	1.15	80.87	1.31
Ge 3% w/w	104.17	1.55	91.17	1.04	82.87	1.82
Ge 3%: C1% w/w	93.23	1.53	86.07	1.54	76.33	1.22
Ge 3%: C3% w/w	89.57	1.64	81.87	1.42	71.08	1.36