Coil-Stretch Transition of High Molar Mass Polymers

Coil Stretch

Abnormal elution behavior of high molar mass polymers, such as flow rate dependence of relative peak retention time, coelution of different molar mass polymers, and the appearance of double peaks at high flow rates, have been reported. By coupling HDC with a DAWN® detector, such abnormal elution behavior is explained in terms of a chromatographic mode transition from HDC to slalom chromatography (SC).