poly(n-isopropylacrylamide) (pnipam) and polyacrylamide (pam)

poly(n-isopropylacrylamide) (pnipam) and polyacrylamide (pam)
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  • Can a pNIPAM hydrogel be layered with a non swellable polymer?
  • However this technique can be used to prepare limited number of shapes. Layering the swellable PNIPAM hydrogel with a non-swellable stiff polymer e.g. low-density polyethylene or polypropylene fumarate allows more detailed patterning and thus further complex structure .
  • Why is PNIPAm copolymerized with other polymers?
  • Copolymerizing PNIPAM with other polymers provides a means to incorporate a wide range of functionality in addition to thermoresponse. These functionalities include but not limited to biocompatibility, antifouling, control release, pH and photo sensitivity (Table 5). Random copolymerization is usually done to alter the LCST and swelling behavior.
  • What is the difference between pNIPAM and P (Nipam-Aam) hydrogel layer?
  • When the temperature was raised to 45 °C higher than LCST of P (NIPAM-AAm) hydrogel layer, the interactions among the hydrophobic segments in the P (NIPAM-AAm) hydrogel layer were much weaker than those in the PNIPAM hydrogel layer.
  • Does ionic monomer sodium acrylic acid improve the tensile strength of Nipam hydrogel?
  • In their follow up study, addition of ionic monomer sodium acrylic acid during the polymerization of NIPAM drastically improved the properties . Although the Young's modulus of this modified hydrogel was low (43.2 kPa), tensile strength (40.9 kPa) and elongation at break (912%) was high.