Gastric secretion cells of gastric mucosa secrete gastric juice composed of hydrochloric acid (HCl), pepsinogen, intrinsic factor (IF), and mucus HCl and pepsinogen initiate protein digestion. IF is required for vitamin B12 absorption in ileum.
Bisphenol A (BPA) is an organic synthetic compound with the chemical formula (CH3)2C(C6H4OH)2 belonging to the group of diphenylmethane derivatives and bisphenols, with two hydroxyphenyl groups. It is a colorless solid that is soluble in organic solvents, but poorly soluble in water.
Poly (acrylic acid) (PAA) is hygroscopic, brittle and colorless in nature with Tg at nearly 106 o C. At temperatures above 200 to 250 o C, it loses water and becomes an insoluble crosslinked polymer anhydride. synthesizing poly(N-isopropylacrylamid e)-block-PAA copolymer which responds to both temperature and pH stimuli 2. â¢ in preparing block copolymer of oligo (methyl methacrylate)/PAA for micellar delivery of hydrophobic drugs 3. â¢ as thickening agent for adhesives.