Polyacrylamide and substituted polyacrylamides

Other derivatives of acrylic acid, such as acrylamide, and some substituted acrylamides also are utilized to make polymers with practical applications. For example, polyacrylamide that is water soluble is used in medicine, in paints and coatings industry, and in adhesives industry. The polymer with some crosslinking forms hydrogels, with applications in agriculture (soil improvement, hydroponics) and in laboratories as stationary phase for electrophoresis. 

Polymers with saturated carbon chain backbone 

The main peaks in the pyrogram of polyacrylamide are several piperidinediones such as 3-methylpiperldin-2,6-dione (a-methylglutarlmide), 3,5-dlmethyl-1,5-dihydropyridine-2,6-dlone. 2,6-plperldlnedione, 5-methyl 3-methylenepiperidine-2,6-dione, and 3-methylenepiperidine-2,6-dione. These molecules and the presence of ammonia in the pyrolysate show that very likely the main reaction during pyrolysis is an elimination that takes place with the formation of piperidin-2,6-dione cycles followed by further cleavages and formation of small molecules as shown below  

The peak eluting in the pyrogram of polyacrylamide at 94.03 min. belongs either to 3-methylene-piperidine-2,6-dione or to 3-methyl-1,5-dihydropyridine-2,6-dione (MW = 

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