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• The Aggregation of Hydrophobically Modified Polysacc

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• Characterization of stability, aggregation, and equilibrium properties of modified natural products

  Unstablebiopolymersolutionsinevitablyleadtomis-characterizationofmacromolecularpropertiesandirreproducibleresults.Evenunderstableorquasi-stableconditions,persistentaggregatescanhamperreliablecharacterization,especiallyusinglightscatteringmethods.Variouspitfallsincharacterizingbiopolymerswereworkedthrough,includingdeterminationofsolutionstabilityzones,dissolutionkinetics,estimationoffractionofaggregatepopulations,andtherelationshipbetweenbatchandfractionationmethods.Chitosans,polyampholyticbiopolymerswithisoelectricpointaroundpH=6.0,withvaryingdegreesofcarboxymethylationwerestudied.Instabilitywasdeterminedvs.pHandionicstrengthusingahighthroughputscreeningmethod,simultaneousmultiplesamplelightscattering(SMSLS).Withstablesolutionconditionsdetermined,equilibriumbatchandmulti-detectorGPCcharacterizationofmolecularweight,intrinsicviscosity,andpolyelectrolytepropertieswasmade.Finally,afirstattemptatcontinuousonlinemonitoringofthemodificationreactionitselfwasmadeandcomparedtoFTIRanalysisofcarboxymethylationondiscretealiquots.Giventherangeofpossiblecharacterizationproblems,multipleapproacheswithindependentinstrumentsmayberequiredforreliablenaturalproductcharacterization.Onlinemonitoringofmodificationreactionsmayleadtorapidadvancesinunderstandingandpreparationofnaturalproducts.[詳細]

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• Characterization of stability, aggregation, and equilibrium properties of modified natural products;

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• Aggregation Kinetics of Citrate and Polyvinylpyrroli

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• Stability and Aggregation of Metal Oxide Nanoparticl

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• SEC-MS for the Analysis Aggregation in Protein Mixtu

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• Aggregation Kinetics of Multiwalled Carbon Nanotubes in Aquatic Systems: Measurements and Environmen

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• Injectable hydrogels with in situ-forming hydrophobic domains: oligo(D,L-lactide) modified poly(oligoethylene glycol methacrylate) hydrogels?

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