GPC/SEC Analysis of Nylon Using Agilent PLgel Columns with HFIP and m-Cresol Solvents
نویسنده
چکیده
Analysis of a polymer by the LC technique of GPC/SEC reveals information that influences many of the key physical parameters of such material, including strength, brittleness, melt flow, and how easily the material is processed. As such, GPC/SEC is a very important technique for those synthesizing polymers of all kinds. However, for many polymer systems, the choice of solvent for the analysis is complex. Many polymers are soluble in only a small number of solvents, and the choice of solvent dictates the running conditions of the analysis. Many of the solvents required are exotic by HPLC standards and often are relatively unpleasant to handle and use from a health and safety perspective.
منابع مشابه
GPC/SEC of Compositionally Complex Natural Polymers with Agilent PLgel MIXED Columns
Many synthetic polymers used in applications such as packaging and construction are well-understood, consisting of homopolymers or co-polymers of chemically simple monomers. Analysis of these materials by gel permeation chromatography (GPC) yields useful molecular weight distributional information that can be used to predict the physical properties of the material and, therefore, end-use applic...
متن کاملQuality analysis of virgin olive oils – Part 2 Thermal treatment analysis – determination of polymerized triglycerides with SEC/GPC using the Agilent 1260 Infi nity LC System with Refractive Index Detection
This Application Note shows the analysis of polymerized triacylglycerides in olive oil using the Agilent 1260 Infi nity LC with size exclusion chromatography/gel permeation chromatography (SEC/GPC) with refractive index detection (RID). The analysis of six virgin olive oils revealed only minor amounts of polymerized triacylglycerides (PTAGs) indicating no refi ning or other thermal treatment pr...
متن کاملLiquid-Liquid Equilibrium for the Ternary Systems of Solvent+ m/o/p-Cresol+Water: Thermodynamic Modeling
In this study, NRTL and UNIQUAC thermodynamic models were used to predict the composition of ternary mixtures of solvents+ m/o/p-cresol+ water in organic and aqueous phases. Various solvents are used for the separation of cresols from water. In this study, methyl propyl ketone, methyl isopropyl ketone, methyl butyl ketone, and methyl isobutyl ketone solvents were investigated. Intermolecular in...
متن کاملDevelopment and partial validation of a SEC method for high-resolution separation and quantifi cation of monoclonal antibodies
Size exclusion chromatography (SEC) is an important technique for the characterization of high molecular substances such as proteins or polymers. It is the standard method to determine and quantify aggregation levels for protein-based pharmaceuticals and is generally required for regulatory approval. This Application Note describes a simple and sensitive method for the quantitative analysis of ...
متن کاملAnalysis of PEGylated Proteins with Agilent AdvanceBio SEC Columns
PEGylation of therapeutic proteins has signifi cantly improved their value by altering the physicochemical and biological properties such as increased solubility, decreased immunogenicity, increased half-life, and protection against proteases. Size Exclusion Chromatography (SEC) is the method of choice for determining impurities with molecular mass higher than that of PEGylated proteins. SEC of...
متن کامل