H. H. KauschSpringer NetherlandsNguyen TQ, Kausch HH. Molecular weight distribution-- Characterisation by GPC. In: Swallowe GM, editor. Mechani- cal Properties and Testing of Polymers: An A-Z Reference. Dordrecht: Kluwer; 1999. p 151-155....
In the GPC analysis, the elution amount is determined using a known molecular weight marker, and a calibration curve is prepared by plotting the logarithm of the molecular weight on the vertical axis and the logarithm of the elution amount on the horizontal axis (holding time) before analyzing ...
by GPC with different molecular weight ofdextransas standard, to be 240, 21.4 and 2.46kDa, respectively. The molecular weights of TPS extracted from green tea leaves (TLPS), flowers (TFPS) and seeds (TSPS) were also determined by GPC with different molecular weight of dextrans (T3, T6, ...
Peak-ABC-GPC system is fully integrated with Peak-ABC software system. Having acquired a chromatogram using Peak-ABC system, Peak-ABC-GPC system enables you to accurately measure molecular weight distribution and produce various GPC plots and reports interactively. The highlights of Peak-ABC-GPC is...
TRACE ELEMENT ANALYSISDETERMINATION OF HALIDESIn order to determine the molecular weight of a polymer by GPC in the low MW region, a secondary calibration method can be established when polymer standards of the analysed polymer are not available (1). The efficiency of this method has been ...
CPG offers molecular weight analysis using GPC, Dilute Solution or Intrinsic Viscometry (IV) and Melt Flow Index (MFI).Gel Permeation Chromatography (GPC)GPC is the most commonly used technique for determination of molecular weight. In GPC, a dilute solution of the analyte in question is ...
Molecular weight analysis of rigid-rod polymers by gel permeation chromatography (GPC) is known to give overestimated values if polystyrene is used for calibration. In this work matrix-assisted laser desorption/ionisation time of flight (MALDI-TOF) mass spectrometry was applied for the first time ...
The GPC results indicated that the polymerization degree increased with the extension of reaction tine and themolecularweight distribution was tend to be monodispersity. GPC研究结果表明随反应时间延长,聚合度增大,聚合物分子量趋于增大但分散性减小。
Determinations of absolute molecular weight can also be performed by combining viscometry and light scattering detection to a GPC separation. New Packing Material for GPC Systems In GPC, the mobile phase dissolves the sample and carries it through the column. There is no interaction between the ...
For example, the ultimate properties of an EPM or EPDM copolymer are determined by such factors as composition, compositional distribution, sequence distribution, molecular weight, and molecular weight distribution (MWD). The efficiency of peroxide curing depends on composition. As the ethylene level ...