Characterization of Polyacrylnitrile
GPC is used to easily and reliably analyze the molecular mass distribution of industrially produced polyacrylnitrile in this application note. Polyacrylnitrile (PAN) is an important component of many industrial products including heavy-duty fibres, synthetic ropes, flame resistant plastics, and the versatile impact resistant ABS plastics. PAN is also commonly used to produce fabric for clothing manufacture since its addition creates a material that is warming, soft and crease-resistant. This application demonstrates a separation based on molecular size using GPC with organic eluents, along with a simple sample preparation procedure. Since this GPC application uses DMF and a small amount of lithium bromide as mobile phase, it will work on a standard HPLC system without any modifications.
Modern HPLC Strategies: Improving Retention and Peak Shape for Basic Analytes
August 16th 2024In high-performance liquid chromatography (HPLC), it is common for bases and unreacted ionized silanols on silica-based columns to cause irreproducible retention, broad peaks, and peak tailing when working with basic analytes. David S. Bell, Lead Consultant at ASKkPrime LLC offers innovative HPLC strategies that can help mitigate such issues.
