Precise modulation of molecular weight distribution for structural engineering

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...

Effect of Molecular Weight Distribution on Chemical, Structural and Physicochemical Properties of Sodium Lignosulfonates

Chemical, structural and physicochemical properties of six sodium lignosulfonates (SLS) fractions with high purity and narrow molecular weight distribution (Mw) ranked between 2307 and 19583 g.mol -1 were studied. Structural characterization of these fractions, using 31 Phosphor Nuclear Magnetic Resonance ( 31 P NMR) and Fourier Transformed InfraRed (FTIR) analysis, was reported. 31 P NMR and F...

Calculation of Molecular Weight Distribution from Molecular Weight Moments in Free Radical Polymerization

A novel method is presented for the calculation of weight chain length distribution in free radical polymerization of vinyl monomers. In the proposed method, polymerization kinetic equations and molecular weight moment equations are used in conjunction with a function that defines the weight fraction of polymer in a finite chain length interval. The entire range of molecular weight is divided i...

Precise Requirements Engineering for Model Transformations

Requirements engineering is an essential process in the development of effective software systems, and it is the basis for subsequent development processes. In my PhD research I intend to identify techniques for the systematic requirements engineering of model transformations, taking account of the specific characteristics of different categories of model transformations.