Reducing pain caused by the removal of adhesive wound dressing materials is very important in clinical practice and is also one of the factors to consider when choosing dressing materials. A visual analogue scale is the most popular method for assessing pain, but it is subjective and is difficult to evaluate quantitatively or statistically. Recently, a new method for the quantitative measuremen...

A series of pressure-sensitive adhesives (PSAs) with different monomer composition was prepared using emulsion polymerisation. The monomers were butylacrylate (BA), 2-hydroxyethyl acrylate (2-HEA), acrylic acid (AA) and 2-ethylhexyl acrylate (2-EHA). The adhesive performance was studied at 4%, 8% and 12% 2-EHA content based on total monomer (BOTM) composition. The adhesives obtained with consta...

Natural rubber is used as an important raw material by the pressure sensitive adhesives industry. However, the normal quality variation is relatively high compared to synthetic polymer alternatives. This paper discusses measurements of the magnitude and nature of this natural rubber quality variation using a special dynamic mechanical rheological tester. Also the paper discusses some of the cau...

Geckos use millions of adhesive setae on their toes to climb vertical surfaces at speeds of over 1 m s(-1). Climbing presents a significant challenge for an adhesive since it requires both strong attachment and easy, rapid removal. Conventional pressure-sensitive adhesives are either strong and difficult to remove (e.g. duct tape) or weak and easy to remove (e.g. sticky notes). We discovered th...

Stickies continue to represent the most challenging contaminant to remove from recycled secondary fiber. Current projections suggest that pressure sensitive adhesive (PSA) markets will continue to grow rapidly, increasing the concentration of these contaminants in common office-pack wastepaper. PSA’s reformulated to exhibit higher removal efficiencies within standard secondary fiber processing ...

Vinylether monomers offer unique properties for UV/EB curing due to their efficiency as reactive diluents and their ability to undergo both cationic homopolymerization and free-radical copolymerization. The benefits derived from the inclusion of vinylethers into commercial UVcurable epoxysilicone formulations include viscosity reduction, improved cationic photoinitiator miscibility, and lower c...

Results are reviewed from a study on the distribution of surfactants in pressure-sensitive adhesive (PSA) films subsequent to the coating process. The PSAs are water-based acrylics synthesized with n-butyl acrylate, vinyl acetate and methacrylic acid and two commercially available surfactants, disodium (nonylphenoxypolyethoxy)ethyl sulfosuccinate (anionic) and nonylphenoxypoly(ethyleneoxy) etha...

We present a possibility of tailoring the near-surface composition profiles of pressure sensitive adhesive (PSA) films by an exposure to atmospheres of different relative humidities (RHs). The statistical copolymer P(EHA-stat-20MMA) with a majority of ethylhexylacrylate (EHA) and a minority of methylmethacrylate (MMA), being cast from a toluene based solution, is chosen as a model system. The n...

background: scuba diving is one of the fastest growing sports in the world. the objective of this study was to evaluate the effect of pressure variations to which divers are exposed on the pull out strength of glass fiber post luted with different cements. materials and methods: in this in vitro study, 120 extracted, single-rooted lower premolars were endodontically treated. they were randomly ...

OBJECTIVE The primary objective was to assess dressing delamination and the ensuing potential consequences during wear and/or removal, as well as the effect of residue remaining in the ulcer following foam breakdown. METHOD In this prospective multicentre study, 32 patients with a grade II or III pressure ulcer were randomised to receive either Allevyn Adhesive or Biatain Adhesive dressing. T...