Molar mass distributions in binary homopolymer blends by single-step two-dimensional liquid chromatography: Operation and data treatment

2016 ◽  
Vol 52 ◽  
pp. 33-40 ◽  
Author(s):  
Luis A. Clementi ◽  
Alena Šišková ◽  
Gregorio R. Meira ◽  
Dušan Berek ◽  
Jorge R. Vega
Keyword(s):  
Liquid Chromatography ◽  
Molar Mass ◽  
Single Step ◽  
Two Dimensional ◽  
Mass Distributions ◽  
Data Treatment ◽  
Homopolymer Blends

Molar mass distributions in homopolymer blends from multimodal chromatograms obtained by Sec/Gpc with a concentration detector

2015 ◽  
Vol 43 ◽  
pp. 58-67 ◽  
Author(s):  
Luis A. Clementi ◽  
Gregorio R. Meira ◽  
Dušan Berek ◽  
Ludmila I. Ronco ◽  
Jorge R. Vega
Keyword(s):  
Molar Mass ◽  
Mass Distributions ◽  
Homopolymer Blends

Application of on-line two-dimensional liquid chromatography in comparative proteome analysis of antlers with different growing stages

2010 ◽  
Vol 28 (2) ◽  
pp. 146-151 ◽  
Author(s):  
Liang GAO ◽  
Xiaoqiang QIAO ◽  
Zhen LIANG ◽  
Lihua ZHANG ◽  
Yushu HUO ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Proteome Analysis ◽  
Two Dimensional ◽  
On Line

QELSS diffusion data for moderately broad molar mass distribution polymer samples compared with data from classical gradient techniques

1989 ◽  
Vol 54 (7) ◽  
pp. 1821-1829
Author(s):  
Bedřich Porsch ◽  
Simon King ◽  
Lars-Olof Sundelöf
Keyword(s):  
Diffusion Coefficient ◽  
Mass Distribution ◽  
Molar Mass ◽  
Molar Mass Distribution ◽  
Diffusion Data ◽  
Mass Distributions ◽  
Classical Diffusion ◽  
Polydisperse Polymer

The differences between the QELSS and classical diffusion coefficient of a polydisperse polymer resulting from distinct definitions of experimentally accessible average values are calculated for two assumed specific forms of molar mass distributions. Predicted deviations are compared with the experiment using NBS 706 standard polystyrene. QELSS Dz of this sample relates within 2-4% to the classical diffusion coefficient, if the Schulz-Zimm molar mass distribution is assumed to be valid. In general, differences between the height-area and QELSS diffusion coefficient of about 20% may be found for Mw/Mn ~ 2, and this value may increase above 35%, if strongly tailing molar mass distribution pertains to the sample.

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