在线监测

In-line particle size assessment of polymer suspensions during processing

ty10086 提交于 周四, 08/26/2021 - 13:32
Abstract(#br)The validation and the operating window of an in-line rheo-optical slit die coupled to a prototype single/twin-screw mini-extrusion system are reported. This experimental set-up is able to perform in-situ rheological measurements, together with Small Angle Light Scattering (SALS) and Polarized Optical Microscopy (POM), thus enabling the structural characterization of materials during extrusion. The optical validation focuses on particle sizing and is performed using standard size particles suspended in a Newtonian polydimethylsiloxane (PDMS) matrix.

Transport of dilute organics through dense membranes: Assessing impact on membrane-solute interactions

ty10086 提交于 周四, 08/26/2021 - 13:21
Abstract(#br)Polydimethylsiloxane (PDMS) membranes were synthesised by varying the degree of crosslinking and were characterised in a pervaporation system coupled to a mass spectrometry (MS) for on-line monitoring and collecting data points with an interval of 2\u003cce:hsp sp=\"0.25\"/\u003es. This monitoring approach allows obtaining very precise information about the impact of solutes’ solubilisation within the membrane and their influence on solvent permeation.