Sodium starch glycolate characteristic

Sodium starch glycolates are generally spherical, a characteristic which accounts for their good flowability [4]. Figure 1 shows the scanning electron photomicrographs (SEMs) of some the commercial sodium starch glycolates. 

Puttipipatkhachorn, S. Pongjanyakul, T. Priprem, A. Molecular interaction in alginate beads reinforced with sodium starch glycolate or magnesium aluminum silicate, and their physical characteristics. Int. J. Pharm. 2005, 293 (1-2), 51-62. 

The bioadhesive characteristics of tablets for oral use made from modified starch, poly(acrylic acid), polyethylene glycol) and sodium carboxymethyl cellulose were recently investigated [406]. In this work, the force and energy adhesion were determined in vitro, and maximum adhesion times were evaluated in vivo in humans [406], In the in vitro, studies, the poly(acrylic add) gave the best performance, however in vivo bioadhesion was not strongly correletated with... 

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