Size exclusion chromatography-laser light

Samples from size-exclusion chromatography/low angle laser light scattering (sec/laUs). 

Mourey, T. H. and Coll, H., Size exclusion chromatography with two-angle laser light-scattering (SEC-TALLS) of high-molecular-weight and branched polymers, /. Appl. Polym. Sci., 56, 65, 1995. 

Yu, L.P. and Rollings, J. E., Quantitative branching of linear and branched polysaccharide mixtures by size exclusion chromatography and on-line low-angle laser light-scattering detection, /. Appl. Polym. Sci., 35, 1085, 1988. 

Beri, R. G., Walker, J., Reese, E. T., and Rollings, J. E., Characterization of chitosans via coupled size-exclusion chromatography and multiple-angle laser light-scattering techniques, Carb. Res., 238, 11, 1993. 

Chen, J., Radke, W., Pasch, H. (2002). Analysis of polyamides by size exclusion chromatography and laser light scattering. Macromol. Symp. 193, 107. 

Size exclusion chromatography multiangle laser light scattering. 

Size Exclusion Chromatography with Low-Angle Laser Light-Scattering Detection... 

The observations and questions raised by these workers helped stimulate the experiments which are presented here. In this work, size exclusion chromatography with low angle laser light scattering detection (SEC/LALLS) was used to probe the distribution of branching functionality in multiarm macromolecules of styrene/isoprene and styrene/buta-... 

Figure 8. Molecular weight distribution of branched PVAc (B...) as determined by laser light scattering (LLS) and size exclusion chromatography (SEC)/viscometry. A comparison of results by the two methods is listed in Table 2.

Yu, L. -P, Rollangs, J. E. (1987). Low-angle laser light scattering-aqueous size exclusion chromatography of polysaccharides molecular weight distribution and polymer branching determination. Journal of Applied Polymer Science, 33, 1909-1921. 

Size exclusion chromatography has been greatly enriched recently by the advent of two commercial detectors, the real-time differential viscometer (DV) and the low angle laser light scattering (LALLS) photometer. The only DV detector currently available is offered by Viscotek in Porter, TX, as the model 100. 

Hjerde, T., Smidsrad, O., Christensen, B.E. (1998a). Analysis of the conformational properties of k- and i-carrageenan by size-exclusion chromatography combined with low-angle laser light scattering. Biopolymers, 49, 71-80. 

Lucey, J.A., Srinivasan, M., Singh, H., Munro, P.A. (2000). Characterization of commercial and experimental sodium caseinate by multiangle laser light scattering and size-exclusion chromatography. Journal of Agricultural and Food Chemistry, 48, 1610— 1616. 

The solution behavior of poly(amic acids) was until recently, probably the least understood aspect of the soluble polyimide precursor. However, the advent of sophisticated laser light scattering and size exclusion chromatography instrumentation has allowed elucidation of the solution behavior of poly(amic adds). In the early days of polyimide chemistry, when most molecular weight characterization was based on viscosity determinations, a decrease in viscosity was associated with molecular weight degradation [15, 28, 29]. Upon combination of the two monomers an increase in the viscosity to the stoichiometric equivalence point is observed, followed by a decrease in the solution viscosity as a... 

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