Abstract Background Growing microbial resistance towards the existing antimicrobial materials appears as greatest challenge for scientific community and development of new has become an important research objective. Results In this work, activity silver-coated hollow poly(methylmethacrylate) microspheres (PMB) having a diameter 20–80 µm was evaluated against two bacterial strains, Gram-positive...

BACKGROUND In most of the reported series, almost half of the giant-cell tumors involved the knee region. The characteristics of the lesions were usually benign but often locally aggressive and easily recurrent neoplasms. Some surgeons performed intralesional excision combined with local adjunctive chemical coagulant, and bone grafting or methylmethacrylate cement packing. These methods could b...

The amount of residual monomer in methylmethacrylate resins used for denture bases is directly dependent on the polymerization procedure chosen. Residual monomer in PMMA powder has not yet been fully clarified. The aim of this study was to determine the amount of residual monomer in some PMMA powders used for denture bases. The study included determination of the amount of residual monomer in s...

Twenty-five years ago John Charnley proclaimed the three basic conceptions for successful hip replacement arthroplasty 1. His recognition that low friction at the prosthetic bearing surface could greatly decrease the chances of component loosening from bone, that 316L stainless steel, ultra high molecular weight polyethylene and methylmethacrylate self curing bone cement were biocompatible and ...

The wear of polymer-based materials is connected to their brittleness. We have previously formulated a quantitative definition of brittleness in terms of elongation at break and storage modulus for thermoplastic polymers. We provide a formula connecting brittleness to viscoelastic recovery (healing) after sliding wear. Our model fits a selection of ten thermoplastics representing several classe...

Coherent anti-Stokes Raman scattering microscopy is performed on glassy systems of poly(methylmethacrylate) colloidal particles in density- and refractive-index-matched solvents. Samples are prepared with varying amounts of linear polystyrene, which induces a depletion driven attraction between the nearly hard-sphere particles. Images collected over several hours confirm the existence of a reen...

Herein, we report the synthesis of monomethacryloyl sucrose esters, and their successful free radical homo- and co-polymerisation with styrene, methylmethacrylate, α-and β-pinene. The chemical, physical, structural and surface chemical properties of these polymers, containing a hydrophobic olefin backbone and hydrophilic sugar moieties as side chains, have been investigated. Biodegradation test...

Historically, most microfluidic devices for genetic analysis have been fabricated in glass, a substrate that is costly and, if not regenerated properly between analyses, can have problems with cross-contamination. The use of polymeric substrates, such as poly(methylmethacrylate) (PMMA), allows for simplified fabrication with the possibility for inexpensive and disposable microdevices. The work ...

In this paper a comparison between a linear-model-based and a bilinear-modelbased identification and predictive control methodology is presented. Input-output data from a nonlinear first-principles simulation model of the free-radical polymerization of methylmethacrylate are used for black-box identification of a linear and a bilinear model. These black-box models are used within a model-based ...