Field Flow Fractionation for the Size, Molar Mass, and Gel Content Analysis of Emulsion Polymers for Water-Based Coatings

2016 ◽  
Vol 217 (18) ◽  
pp. 2027-2040 ◽  
Author(s):  
Ashwell C. Makan ◽  
Ryan P. Williams ◽  
Harald Pasch
Keyword(s):  
Content Analysis ◽  
Molar Mass ◽  
Field Flow Fractionation ◽  
Gel Content ◽  
Water Based ◽  
Emulsion Polymers ◽  
Flow Fractionation

Molar Mass Characterization of Crude Lignosulfonates by Asymmetric Flow Field-Flow Fractionation

2018 ◽  
Vol 7 (1) ◽  
pp. 216-223 ◽  
Author(s):  
Irina Sulaeva ◽  
Philipp Vejdovszky ◽  
Ute Henniges ◽  
Arnulf Kai Mahler ◽  
Thomas Rosenau ◽  
...  
Keyword(s):  
Flow Field ◽  
Molar Mass ◽  
Field Flow Fractionation ◽  
Asymmetric Flow ◽  
Flow Fractionation

scholarly journals Asymmetrical Flow Field Flow Fractionation - Multidetection System as a Tool for Studying Metal - Alginate Interactions

2006 ◽  
Vol 3 (3) ◽  
pp. 192 ◽  
Author(s):  
Enrica Alasonati ◽  
Björn Stolpe ◽  
Maria-Anna Benincasa ◽  
Martin Hassellöv ◽  
Vera I. Slaveykova
Keyword(s):  
Organic Matter ◽  
Flow Field ◽  
Size Distribution ◽  
Molar Mass ◽  
Radius Of Gyration ◽  
Size Distributions ◽  
Field Flow Fractionation ◽  
Element Cycling ◽  
Metal Pollutants ◽  
Flow Fractionation

Environmental Context. Acidic polysaccharides are important components of the organic matter in ecosystems that are involved in the transport of metal pollutants. They are able to affect trace element cycling, both due to their metal binding properties and to their effect on aggregation and sedimentation of organic matter. In order to obtain more information regarding their role as metal pollutant carriers, the size distributions of alginate and metal alginate complexes have therefore been studied with novel instrumentation. Abstract. The present study explores the potential use of asymmetrical flow field flow fractionation (aFlFFF) with a multidetection system for the study of metal–alginate interactions. aFlFFF, coupled on-line to a differential refractive index and seven angle laser light scattering detectors was used to provide information on the alginate size distributions. In parallel, the metal distributions of metal–alginate complexes were probed by aFlFFF–high resolution inductively coupled plasma-mass spectrometry. Average values and continuous distributions of molar masses, radiuses of gyration and hydrodynamic radiuses, which are critical for understanding the role of alginates as carriers of metal pollutants, were evaluated in presence of Pb or Cd and compared with those in metal-free solutions of alginate. The values of number average and weight average molar mass, weight average radius of gyration and shape factor for alginate were 150 and 188 kg mol–1, 53 nm and 1.7, respectively. Alginate molar mass and radius of gyration distributions were slightly shifted to higher values by the addition of micromolar concentrations of Pb or Cd. The alginate size distribution in the presence of Cd was similar to the alginate-alone control, whereas in the presence of Pb the size distribution was broader with a shift of the maximum toward higher molar masses.

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