Ultra-Drawing of Ultrahigh Molecular Weight Poly (acrylonitrile)

Drawing Behavior of Ultrahigh Molecular Weight Polyethylene (uhmwpe) Fibers in Supercritical C02

Wear of Ultra High Molecular Weight Polyethylene

The Molecular Weight of Specific Poly- Saccharides*

The question of the molecular weight of the specific polysaccharides is one of great importance for an understanding of the mechanism of immune reactions. It has been found that the precipitin reaction, for example, may be accounted for as a chemical combination of antigen (or haptene) with antibody globulin in proportions depending on the relative amounts of antigen (haptene) and antibody pres...

Preparation of a reservoir type levonorgestrel delivery system using high molecular weight poly L-lactide

Implantable contraceptive is likely to be a promising new option for fertility control, as we have entered the twenty-first century and the world’s population grows by one billion people in a single decade. The main objective of this study was to develop a subdermal implant for levonorgestrol (a synthetic progestin from 19-norandrostanes) using a high molecular weight biodegradable polymer , i....

Poly (Vinylidene Fluride) Membrane Preparation and Characterization: Effects of Mixed Solvents and PEG Molecular Weight

In this study, polyvinylidene fluoride (PVDF) ultrafiltration membranes were prepared via immersion precipitation method using a mixture of two solvents triethyl phosphate (TEP) and dimethylacetamide (DMAc), which had different affinities with the nonsolvent (water). Properties of the prepared membranes were characterized using scanning electron microscope (SEM) and contact angle and membrane p...