منابع مشابه
Chemically-induced swelling of hydrogels
We consider a continuum model for chemically-induced volume transitions in hydrogels. Consistent with experimental observations, the theory allows for a sharp interface separating swelled and collapsed phases of the underlying polymer network. The polymer chains are treated as a solute with an associated diffusion potential and their concentration is assumed to be discontinuous across the inter...
متن کاملKinetics of thermally induced swelling of hydrogels
We present a continuum model for thermally induced volume transitions in stimulus–responsive hydrogels (SRHs). The framework views the transition as proceeding via the motion of a sharp interface separating swollen and collapsed phases of the underlying polymer network. In addition to bulk and interfacial force and energy balances, our model imposes an interfacial normal configurational force b...
متن کاملSwelling Characterization of Nanocomposite Hydrogels of Poly (acrylamide-N-vinylimidazole)
In this study, a hydrogel composed of acrylamide (AAm) with N-vinylimidazole (NVI) as co-monomer, with a cross-linker such as N, N` Methylenebisacrylamide and potassium peroxodisulfate as an initiator solution was prepared. Poly (AAm/NVI) hydrogels were synthesized by free radical solution polymerization. Swelling experiments were performed in water at 25°C, gravimetrically. Here, it was of...
متن کاملSwelling-Induced Surface Patterns in Hydrogels with Gradient Crosslinking Density
Hydrogels with controlled surface patterns are useful for a range of applications, including in microdevices, sensors, coatings, and adhesives. In this work, a simple and robust method to generate a wide range of osmotically driven surface patterns, including random, lamellar, peanut, and hexagonal structures is developed. This method does not require the use of organic solvents for swelling, p...
متن کاملSwelling Properties of Hydrogels Containing Phenylboronic Acids
Phenylboronic acids are a class of compounds that bind glucose and other sugars. When polymerized into hydrogels, they provide a convenient nonenzymatic means for sensing glucose concentration, provided competing sugars are present at negligible concentrations. In this paper we provide a comprehensive study of swelling of hydrogels containing methacrylamidophenylboronic acid (MPBA), as a functi...
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ژورنال
عنوان ژورنال: Journal of the Mechanics and Physics of Solids
سال: 2004
ISSN: 0022-5096
DOI: 10.1016/s0022-5096(03)00091-7