Characterization of thermo and pH responsive NIPAM based microgels and their membrane blocking potential
作者： Reham Mohsen , George J. Vine , Natasa Majcen , Bruce D. Alexander , Martin J. Snowden
DOI: 10.1016/J.COLSURFA.2013.03.031
关键词:
摘要: Abstract This work aims to study the behavior of temperature-responsive p(NIPAM) and temperature/pH-responsive p(NIPAM)/acrylic acid (AA) microgels. Three microgels were synthesized using surfactant free emulsion polymerization technique, these are p(NIPAM), p(NIPAM)-co-AA 95:5% (w/w) 90:10% (w/w). Dynamic light scattering was used diluted microgel dispersions (0.5%, w/w p(NIPAM)), while rheology viscosity 2% dispersions. The characterization data indicate swelling/deswelling flocculation/deflocculation conditions required for flocculation test ability block a membrane pore size 5 μm. In 3 h, 5% AA p(NIPAM)10% blocked (decrease flow rate) by 96.16, 59.44 59.8% respectively. Thus, controlled may be in applications where blocking is important such as treatment dentinal hypersensitivity, given that VPTT ≈34 °C, which very close human body temperature.
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