anionic polymer / anionic pam / apam / phpa at germany

anionic polymer / anionic pam / apam / phpa at germany
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  • Is Apam a uniform polymer?
  • The polyacrylamide is a uniform and unitary polymer. PAM has a neat smooth surface as its SEM images unfold at 2500x and 4000x. However, the surface of APAM was much rougher. Hills and valleys could be observed in its SEM images due to the interaction of chemical groups between AM and SAS.
  • Is Apam-t a novel anionic polyacrylamide?
  • APAM-T is a novel anionic polyacrylamide which has been successfully synthesized by ultrasonic initiated template copolymerization. Characterization results showed the evidence of the microblock structure’s existence and the enhancement of copolymerization degree by adding the template.
  • What is a polyacrylamide (PAM)?
  • 1. Introduction Polyacrylamides (PAM) are high molecular weight polymers deriving from the polymerization of acrylamide monomers. Their chemical composition and ionic character depend on the functional groups added to the acrylamide chemical moiety ( Abidin et al., 2012; Acharya et al., 2010 ).
  • What causes adsorption of anionic Pam at pH 3?
  • The greatest adsorption of anionic PAM at pH 3 is a result of electrostatic attraction between the positively charged solid surface and the minimally negatively charged PAM macromolecules (which assumes more coiled conformation assuring their dense packing on the solid surface).