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Rheological properties of homogeneous and heterogeneous poly(2-hydroxyethyl methacrylate) hydrogels
- 1.0374874 - ÚMCH 2012 RIV GB eng J - Journal Article
Karpushkin, Evgeny - Dušková-Smrčková, Miroslava - Remmler, T. - Lapčíková, Monika - Dušek, Karel
Rheological properties of homogeneous and heterogeneous poly(2-hydroxyethyl methacrylate) hydrogels.
Polymer International. Roč. 61, č. 2 (2012), s. 328-336. ISSN 0959-8103. E-ISSN 1097-0126
R&D Projects: GA AV ČR KAN200520804
Institutional research plan: CEZ:AV0Z40500505
Keywords : hydrogel * 2-hydroxyethyl methacrylate * phase separation
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 2.125, year: 2012
The swelling and rheological behaviour of hydrogels of morphology varying from non-porous to highly porous was investigated. The hydrogels were prepared by redox free radical copolymerization of 2-hydroxyethyl methacrylate with 0.1 to 5 mol% of di(ethylene glycol) dimethacrylate in the presence of water varying from 40 to 80 wt%. Various compositions led to clear, turbid or macroporous gels. The morphology of the gels was characterized using optical microscopy and cryoscan electron microscopy. The oscillatory shear and creep of swollen gels revealed that there was a pronounced difference between homogeneous or microheterogeneous and macroporous gels with communicating pores. The achievement of optimum conditions for the correct determination of shear modulus was also analysed.
Permanent Link: http://hdl.handle.net/11104/0006912
Number of the records: 1