polyacrylamide (pam) and copolymers – poly(n at malaysia

polyacrylamide (pam) and copolymers – poly(n at malaysia
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  • Is polyacrylamide contaminated with acrylamide?
  • Polyacrylamide is of low toxicity but its precursor acrylamide is a neurotoxin and carcinogen. Thus, concerns naturally center on the possibility that polyacrylamide is contaminated with acrylamide. Considerable effort is made to scavenge traces of acrylamide from the polymer intended for use near food.
  • What are the complication of polymer based polymer (Pam)?
  • One complication is that PAM is reported to strongly bind about 2–9% water in spite of intensive drying 1. If this water is not removed, it might be expected to act like a plasticizer and lower the T g of the polymer. Another complication is that removal of this’ water requires extensive drying.
  • Why is polyacrylamide not a polyamide?
  • It can be viewed as polyethylene with amide substituents on alternating carbons. Unlike various nylons, polyacrylamide is not a polyamide because the amide groups are not in the polymer backbone. Owing to the presence of the amide (CONH 2) groups, alternating carbon atoms in the backbone are stereogenic (colloquially: chiral).
  • Is acrylamide a copolymer?
  • Even though these products are often called 'polyacrylamide', many are actually copolymers of acrylamide and one or more other species, such as an acrylic acid or a salt thereof. These copolymers have modified wetting and swellability.