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| dc.contributor.author | Mohsen, Reham | |
| dc.contributor.author | J. Vine, George | |
| dc.contributor.author | Majcen, Natasa | |
| dc.contributor.author | D. Alexander, Bruce | |
| dc.contributor.author | J Snowden, Martin | |
| dc.date.accessioned | 2020-02-29T09:00:11Z | |
| dc.date.available | 2020-02-29T09:00:11Z | |
| dc.date.issued | 2013 | |
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| dc.identifier.other | https://doi.org/10.1016/j.colsurfa.2013.03.031 | |
| dc.identifier.uri | https://t.ly/KX3RP | |
| dc.description | MSA Google Scholar | en_US |
| dc.description.abstract | This work aims to study the behavior of temperature-responsive p(NIPAM) and temperature/pHresponsive 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) and p(NIPAM)- co-AA 90:10% (w/w). Dynamic light scattering was used to study the behavior of diluted microgel dispersions (0.5%, w/w p(NIPAM)), while rheology was used to study the viscosity of 2% (w/w) p(NIPAM) dispersions. The characterization data indicate the swelling/deswelling and flocculation/deflocculation behavior of the microgels. The conditions required for flocculation were used to test the ability of the microgel dispersions to block a membrane of pore size 5 m. In 3 h, p(NIPAM), p(NIPAM) 5% AA (w/w) and p(NIPAM)10% AA (w/w) blocked the membrane (decrease the flow rate) by 96.16, 59.44 and 59.8% respectively. Thus,the controlled flocculation of microgels may be used in applications where pore blocking is important such as the treatment of dentinal hypersensitivity, given that the VPTT of p(NIPAM) is ≈34 ◦C, which is very close to the human body temperature. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.relation.ispartofseries | Colloids and Surfaces A: Physicochemical and Engineering Aspects;Volume 428, 5 July 2013, Pages 53-59 | |
| dc.subject | p(NIPAM) | en_US |
| dc.subject | Acrylic acid | en_US |
| dc.subject | DLS | en_US |
| dc.subject | Rheology | en_US |
| dc.subject | Particle concentration | en_US |
| dc.subject | Membrane blockage | en_US |
| dc.title | Characterization of thermo and pH responsive NIPAM based microgels and their membrane blocking potential | en_US |
| dc.type | Article | en_US |
| dc.identifier.doi | https://doi.org/10.1016/j.colsurfa.2013.03.031 | |
| dc.Affiliation | October University for modern sciences and Arts (MSA) |
