Silicone rubber-hydrogel composites as polymeric biomaterials

Lopour, P.; Janatová, V.

doi:10.1016/0142-9612(95)93861-7

Cited by 20 publications

(11 citation statements)

References 7 publications

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“…The results of the investigation of the structure of swollen and unswollen composite materials indicated that permeation of low‐molecular‐weight compounds through composite materials was obviously connected with communication of swollen particles in the silicone matrix 75. For these composites, permeation of inorganic salts in water‐swollen silicone rubber–hydrogel composites76 and the relations between the properties, structure and chemical composition of polymer phases of the composite materials and their mechanical properties have been investigated 77…”

Section: Bulk Modificationmentioning

confidence: 99%

Modification of polysiloxane polymers for biomedical applications: a review

Abbasi

Mirzadeh

Katbab

2001

Polymer International

458

316

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This paper reviews methods of modifying polydimethylsiloxane (PDMS) polymers to improve their properties for biomedical applications. The modi®cation methods are discussed under three different categories: bulk, surface and other modi®cation techniques. Surface modi®cation techniques include physical and chemical techniques to modify polymer surfaces. Bulk modi®cation techniques include blending, copolymerization, interpenetrating polymer networks (IPNs) and functionalization. The third category includes less common modi®cation techniques.

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Section: Bulk Modificationmentioning

confidence: 99%

Modification of polysiloxane polymers for biomedical applications: a review

Abbasi

Mirzadeh

Katbab

2001

Polymer International

458

316

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“…In recent years, considerable attention was directed to investigating the properties of silicone rubber/hydrogel particulate composites. 10–17 The main objective of these studies was to improve the hydrophilicity of silicone rubber and also to modify the limited fabricating potential and poor mechanical properties of swollen hydrogels. In this way, the poly(2‐hydroxyethyl methacrylate) (HEMA)/PDMS composites were prepared and their biological properties,11 hydrophilicity and permeability,12, 15 morphology,13 and mechanical properties14 were studied.…”

Section: Introductionmentioning

confidence: 99%

“…Although many reports can be found in the literature dealing with silicone/hydrogel composites and hydrogel‐grafted silicones, 10–27 interpenetrating polymer network systems made from hydrogels and silicone rubber have received relatively little attention 28–31…”

Section: Introductionmentioning

confidence: 99%

Sequential interpenetrating polymer networks of poly(2‐hydroxyethyl methacrylate) and polydimethylsiloxane

Abbasi

Mirzadeh

Katbab

2002

J of Applied Polymer Sci

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ABSTRACT:The preparation of interpenetrating polymer networks (IPNs) from silicone rubber and hydrogel forming poly(2-hydroxyethyl methacrylate) (HEMA) were studied. The HEMA monomer was polymerized with simultaneous crosslink formation in the presence of the swollen silicone rubber. To minimize the required number of experiments, the Taguchi method of experimental design involving the factors of temperature, monomer concentration, initiator concentration, and crosslinker concentration was used. Upon removal of the swelling solvent, an IPN was obtained which absorbed water in the manner of a hydrogel but had mechanical properties superior to a hydrogel.

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“…It has been shown in previous studies [1][2][3] that powdery hydrogels based on acrylamide, methacrylamide or their Nsubstituted derivatives may be used for the synthesis of silicone rubber-hydrogel composites which are suitable for biomedical and technical use. In this respect, polyacrylamide hydrogels seem to be the best as compared with the other hydrogels mentioned, owing to their high rate of swelling, high specific surface area, and relatively low content of water-soluble low-molecular-weight compounds.…”

Section: Introductionmentioning

confidence: 99%

Shape memory of composites based on silicone rubber and polyacrylamide hydrogel

Hron¹,

Šlechtová

1999

Angew. Makromol. Chem.

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The shape memory of hydrophilic composite materials based on silicone rubber and slightly crosslinked polyacrylamide, which is a non‐ionic hydrogel, has been studied. Before the shape memory testing, it was necessary to determine the glass transition temperature (Tg) of the slightly crosslinked polyacrylamide as well as the mechanical properties of the composites at temperatures above Tg of a crosslinked polyacrylamide. Afterwards, the shape memory of the composite material was tested by performing a set of simple experiments based on deformation and heating of test pieces, their subsequent cooling and deformation force removing, and their repeated heating or water swelling, during which the residual elongation was measured and calculated. The composite material shaped in this way resumes its original shape if it is again heated above Tg of the crosslinked polyacrylamide or allowed to swell in distilled water. There exists a limiting concentration of hydrogel phase (approx. 30 phr), which is limited by good dispersion and good contact of hydrogel particles within the silicone matrix, under which the shape memory does not occur, and above which it exists.

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Silicone rubber-hydrogel composites as polymeric biomaterials

Cited by 20 publications

References 7 publications

Modification of polysiloxane polymers for biomedical applications: a review

Modification of polysiloxane polymers for biomedical applications: a review

Sequential interpenetrating polymer networks of poly(2‐hydroxyethyl methacrylate) and polydimethylsiloxane

Shape memory of composites based on silicone rubber and polyacrylamide hydrogel

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