high purity sodium polyacrylate vs polyacrylamide at japan marketing

high purity sodium polyacrylate vs polyacrylamide at japan marketing
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  • What is sodium polyacrylate used for?
  • Sodium polyacrylate is a superabsorbent polymer, capable of absorbing hundreds of times its own mass in water. This property, and the swelling behaviour during absorption, has seen application in diverse areas, including as anti-flood measures, water-retentive soil modifiers and recently soft actuators.
  • What is the density of poly(acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate?
  • Poly (acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate are both superabsorbent crosslinked polymers having a density of 0.54 g/mL at 25 °C [25, 26]. Figure 3 shows the repeating terms of the chemical structures of both poly (acrylamide-co-acrylic acid) potassium salt and sodium polyacrylate used in this study.
  • Does sodium polyacrylate absorb water?
  • While the sodium polyacrylate exhibited a similar swelling behaviour, at 25 °C it demonstrated its highest absorbency (293 g/g) which decreased (264 g/g) at 50 °C. For both samples at 75 °C and higher, their polymer networks collapsed significantly leading to a release of absorbed water.
  • How is sodium Polyacrylate-polyacrylamide a base polymer?
  • Sodium Polyacrylate-polyacrylamide is first prepared as the base polymer by the aqueous solution polymerization method. Subsequently, it is modified with surface cross-linking to enhance absorption, resulting in a surface cross-linked SAP. Lastly, it is modified with foaming to obtain a foamed SAP.