Characterisation of macroporous poly(methyl methacrylate) coated with plasma-polymerised poly(2-hydroxyethyl acrylate)

Macroporous poly(methyl methacrylate) networks with varying cross-linking density and porosity were coated with plasma-polymerised poly(2-hydroxyethyl acrylate) grafted on the pores surface. The result is a mechanically reinforced hydrogel (PMMA- gr- plPHEA) whose properties are characterised in thi...

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Bibliographic Details
Published in:European polymer journal 2007-10, Vol.43 (10), p.4552-4564
Main Authors: Serrano Aroca, A., Gómez Ribelles, J.L., Monleón Pradas, M., Vidaurre Garayo, A., Suay Antón, J.
Format: Article
Language:English
Subjects:
Applied sciences
Differential scanning calorimetry
Diffusion
Dynamic mechanical spectroscopy
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Porous hydrogels
Properties and characterization
Solution and gel properties
Thermogravimetry
Water sorption
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Summary:Macroporous poly(methyl methacrylate) networks with varying cross-linking density and porosity were coated with plasma-polymerised poly(2-hydroxyethyl acrylate) grafted on the pores surface. The result is a mechanically reinforced hydrogel (PMMA- gr- plPHEA) whose properties are characterised in this work using several experimental techniques. Bulk PMMA and bulk PHEA were also characterised as reference materials. The diffusion and water sorption properties of these hydrogels were studied through equilibrium water sorption isotherms and desorption starting with the sample equilibrated in immersion in liquid water or in a vapour atmosphere. Glass transition, dynamic-mechanical relaxation and thermal degradation were characterised in order to study the interphase interaction in these biphasic systems. All these experimental techniques suggested that plasma-polymerised PHEA is more homogeneously interpenetrated with highly cross-linked macroporous PMMA than if the porous substrate is a loosely cross-linked polymer network.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2007.07.026