STUDIES ON POLYMER BLENDING

Numerical Studies on Collective Motion and Polymer Statistics

Studies on the Polymer of Adenosine Diphosphate Ribose

A particulate fraction from rat liver nuclei catalyzes polymerization of the adenosine diphosphate ribose moiety of nicotinamide adenine dinucleotide into an acid-insoluble polymer with the simultaneous release of nicotinamide. The polymer, prepared by reaction in vifro, can be phenolextracted and gives a single symmetrical peak upon equilibrium cesium sulfate density gradient centrifugation at...

Magnetic resonance imaging studies on gadonanotube-reinforced biodegradable polymer nanocomposites.

We report about the in vitro cytotoxicity and MRI studies of Gd(3+)ions-doped ultra-short single-walled carbon nanotube (gadonanotubes), gadonanotubes- reinforced poly(lactic-co-glycolic acid) (PLGA) polymer nanocomposites and in vivo small animal MRI studies using the gadonanotubes. These studies were performed to explore the suitability of gadonanotubes-reinforced PLGA polymer nanocomposite a...

Tomography studies of biological cells on polymer scaffolds

Advances in cell biology and tissue engineering rely heavily on performing 2D cell culture experiments. Analysis of these is conventionally done with 2D imaging techniques such as light (LM) or electron microscopy (SEM), since they are readily available. Cells, however, might act significantly differently when cultured in 2D or 3D environments. In order to analyse cells in a 3D arrangement, new...

Varying the Blending Protocol to Control the Morphology of Model Compatibilized Polymer Blends

The structure of an oil/water emulsion is known to depend on its preparation method. Here, we test whether the preparation protocol can be used to control the morphology of ‘‘model’’ blends of immiscible polymers compatibilized by a diblock copolymer. Two preparation protocols were tested. In the ‘‘double blending’’ protocol, a droplet-matrix blend was blended with additional drop-phase fluid. ...