Agilent 390-LC Manuals

Describes a method for analyzing polystyrene star molecules by GPC Viscometry

This application note describes the use of the Agilent 390-MDS multi-detector suite for GPC triple detection of polyvinyl butyral (PVB). PVB is an important material with a wide range of applications requiring strong binding, optical clarity, excellent surface adhesion, toughness and flexibility. The most well-known application of PVB is in laminated safety glass, for example, in the windscreens of vehicles. In such products, PVB is used as an interface layer between two sheets of toughened glass. The interface layer absorbs the energy of impacts, binding broken shards of glass together and distributing the force of the impact over a wide area. The use of laminated glass has greatly reduced injuries resulting from automobile accidents. As it is the viscoelastic properties of PVB that contribute to its performance in glass laminates, the molecular weight distribution of the material must be closely monitored to ensure optimum performance. Gel permeation chromatography (GPC) with triple detection, employing a light scattering detector and viscometer, may be used to determine accurate molecular weights for polymers such as PVB. Three PVB materials were analyzed using these techniques, one of which did not perform as expected in application testing.

This application note introduces the GPC analysis method for poly(n-isopropylacrylamide) (PNIPAM) smart materials using the Agilent 390-MDS multi-detector suite and universal calibration method.

This document describes the application of GPC triple detection analysis of polybutadiene using the Agilent 390-MDS Multi Detector Suite. Polybutadiene is an elastomer with high elasticity and recovery. It is commonly used to coat electronic assemblies and for tire production. The document provides detailed information on experimental conditions and instrument setup.

This document describes the analysis of epoxy resins using GPC viscometry with the Agilent 390-MDS Multi Detector Suite. GPC viscometry allows for accurate determination of molecular weight distribution of complex polymers, which influences physical characteristics such as curing time of epoxy resins.