Previous studies using gram-positive and -negative bacteria demonstrated that hydrolysis of silicon nitride (Si3N4) in aqueous suspensions elutes nitrogen produces gaseous ammonia while buffering pH. According to immunochemistry assays, fluorescence imaging, situ Raman spectroscopy, we demonstrate here the antipathogenic surface chemistry Si3N4 can be extended polymethylmethacrylate (PMMA) by c...

Acrylate polymers are derivatives of acrylic acid, but contain a plethora different functional groups and best discussed by themselves. In this column, we study the spectrum an important polymer, polymethyl methacrylate (PMMA), which is otherwise known as plexiglass, found in windows, car parts, paint. We then spectra PMMA mixtures copolymers detail.

Thermoelectrets were prepared using polymethyl raethacrylate (PMMA), polystyrene (PS) and their blend in the 50:50 weight ratio. The TSDC spectra of PMMA shows both dipolar and space charge peaks, while the TSDC spectra of PS shows only the space charge peak. The TSDC spectra of the blend however, shows only one peak which is the space charge peak. It is therefore concluded that the PMMA dipole...

Mutilation of a portion of a face can cause a heavy impact on the self-image and personality of an individual. Acceptable cosmetic results usually can be obtained with a facial prosthesis. This paper describes prosthetic rehabilitation of a 60-year-old male patient having a left ocular defect. A technique to fabricate heat polymerizing polymethyl methacrylate was illustrated. The resultant pros...