Lithographic Characterization of Poly(4-vinylphenyldimethylvinylsilane) Having Narrow Molecular Weight Distribution

De novo synthesis of a narrow size distribution low-molecular-weight heparin.

Heparin, a commonly used anticoagulant drug, is a mixture of highly sulfated polysaccharides with various molecular weights (MWs). The unique sulfation pattern dictates the anticoagulant activity of heparin. Commercial heparins are categorized into three forms according to their average MW: unfractionated heparin (UFH, MWavg 14,000), low-MW heparin (LMWH, MWavg 3500-6500) and the synthetic pent...

Rheological Method for Determining Molecular Weight and Molecular Weight Distribution

The molecular-weight distribution of glycosaminoglycans.

1. A rapid and sensitive method for the accurate estimation of the molecular-weight distribution of keratan sulphate and chondroitin sulphate isolated from adult bovine nasal septum and intervertebral disc is described. The method utilizes gel chromatography of reductively labelled glycosaminoglycan and end-group estimation of number-average molecular weight for each fraction across the peak of...

Characterization of Low-Molecular-Weight Protein

Cereal Chem. 63(5):414-419 A low-molecular-weight protein (S protein) fraction with a high affinity and SDS-PAGE patterns were similar for both varieties, but RP-HPLC for flour polar lipid was isolated from flours of one hard and one soft wheat patterns were quite different. Defatting the flour did not affect the yield of S variety. The fraction was characterized by lipid content and compositio...

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...