Table 2: Coding and composition of factorial batches.

F1F2F3F4F5F6F7F8F9

Coding of variables
level 0+1 0+1 0+1
level 000+1+1+1
Ingredients
 AA* (50% v/v) ( L)500500500500500500500500500
 Chitosan (1% w/v) ( L)100200300100200300100200300
 HPMC K4M (2% w/v) ( L)100100100200200200300300300
 BIS (2.5% w/v) ( L)100100100100100100100100100
 TEMED (20% v/v) ( L)252525252525252525
 APS (20% w/v) ( L)252525252525252525
 Span 80 (10% v/v) ( L)303030303030303030
 DDW ( L)300300300300300300300300300
 Sodium bicarbonate (mg)200200200200200200200200200

AA: acrylic acid; HPMC: hydroxypropylmethyl cellulose; BIS: N,N′-methylene-bis-acrylamide; TEMED: N,N,N′,N′-tetramethylethylenediamine; APS: ammonium persulfate; DDW: double distilled water.