Investigation of Macromolecular Chain Interaction by the Use of Swelling DSC and <'1>H Solid State NMR -- Studied by Two Generations of Chinese Scientists

摘要

The concept of chain entanglement provides the basis of our current understanding of the flow behaviour of polymer melts and solutions. Many distinguished works have been based on control of the extent of entanglement. However, an intriguing question concerns characterization of the degree of entanglement below and around the glass transition temperature (Tg) of a polymer, is still not tackled. Late Prof. Baojun Qian proposed a swelling DSC method to investigated successfully macromolecular chain