Table 1.

Polymers' adhesive forces

Polymer	Adhesive force (%)
Poly (acrylic acid)	185.0
Poly (methyl vinyl ether)	147.7
Methylcellulose	128.0
Hydroxypropyl methylcellulose	125.2
Methyl ethyl cellulose	117.4
Gelatin	115.8
Pectin	100.0
Poly (vinyl pyrrolidone)	97.6
Poly (ethylene glycol)	96.0
Poly (vinylic alcohol)	94.8
Poly (hydroxyethyl methacrylate)	88.4

Note: Reproduced with permission from Roy SK, Prabhaka B. Bioadhesive polymeric platforms for transmucosal drug delivery systems - a review. Trop J Pharm Res 2010; 9(1):91–104.⁴⁵