Heat resistance poly(vinyl alcohol) hydrogel

Development and characterisation of an agar–polyvinyl alcohol blend hydrogel

“…It has been widely commercialised and studied in the chemical and medical industries for the production of coatings, cosmetics and films. However, the use of PVOH hydrogels is limited due to low mechanical strength and poor thermal stability (Mondino et al, 1999;Yoshii et al, 1995). Traditional crosslinking methods have been used to synthesise PVOH materials with improved mechanical properties, however the chemicals introduced in their preparation are often toxic in nature, inevitably decreasing the biocompatibility of the resulting hydrogels.…”

Green synthesis of dual-surface nanocomposite films using Tollen’s method

“…The embedding of such particles in polymer matrix is also advantageous from the point of view of film casting. Polyvinyl alcohol (PVA) hydrogel is one of the well-known polymer gels that, due to its good biocompatibility, has been used in numerous biomedical applications, for example, as implants [23], artificial organs [24], contact lenses [25], drug delivery devices [26] and also wound dressings in wound management [27]. PVA is used as a stabilizer due to its optical clarity, which enables investigation of the nanoparticle formation [28,29].…”

Preparation and characterization by radiation of hydrogels of PVA and PVP containing Aloe vera

“…1 In recent years, much attention has been focused on the research and development of polymer hydrogels for biomaterials, such as contact lenses, wound dressing, enzyme immunoassays, catheters and drug delivery systems. 2 Hydrogels may be classified as homopolymer hydrogels, copolymer hydrogels, multipolymer hydrogels or interpenetrating polymeric hydrogels. Homopolymer hydrogels are crosslinked networks of one type of hydrophilic monomer unit, whereas copolymer hydrogels are produced by the crosslinking of two comonomer units, one of which must be hydrophilic.…”