HEMA/MMA/EDMA packing material evaluation for size exclusion chromatography (SEC)
نویسندگان
چکیده
منابع مشابه
Size-exclusion chromatography (SEC) of branched polymers and polysaccharides
Branched polymers are among the most important polymers, ranging from polyolefins to polysaccharides. Branching plays a key role in the chain dynamics. It is thus very important for application properties such as mechanical and adhesive properties and digestibility. It also plays a key role in viscous properties, and thus in the mechanism of the separation of these polymers in size-exclusion ch...
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A theoretical analysis of improving the separation power of size exclusion chromatography by decreasing flowrate is conveyed. The variance of the elution curves is larger than expected form estimated dispersity in molecular weight, Mw/Mn. The shape of the elution curves depends strongly on experimental conditions. When the experimental conditions are approaching those to the ideal separation, j...
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We consider two presentations regarding the size exclusion chromatography of highly asymmetric solutes: one is embodied in the statistical model of Giddings et al.;I the second is described by the concept of "end-on insertion" proposed by Tanford* and expanded upon by Meredith and N a t h a n ~ . ~ Our evaluation is based on measurements of Kfor the rigid rodlike and spherical solutes schizophy...
متن کاملSEC-SANS: size exclusion chromatography combined in situ with small-angle neutron scattering1
The first implementation and use of an in situ size exclusion chromatography (SEC) system on a small-angle neutron scattering instrument (SANS) is described. The possibility of deploying such a system for biological solution scattering at the Institut Laue-Langevin (ILL) has arisen from the fact that current day SANS instruments at ILL now allow datasets to be acquired using small sample volume...
متن کاملSize Exclusion Chromatography of Polymers
In the characterization of polymers, size-exclusion chromatography (SEC) has become a standard technique for determining molar mass averages andmolar mass distributions (MMD) of polymers. The principle of SEC is easily understood: owing to limited accessability of the pore volume within the particles of the column packing, polymer molecules are separated according to their hydrodynamic volumes,...
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ژورنال
عنوان ژورنال: Materials Research
سال: 2005
ISSN: 1516-1439
DOI: 10.1590/s1516-14392005000100005