http://www.chem.cmu.edu/groups/berry/gcbmwd.pdf WebDetermine the polydispersity index of a polymer having the following distribution: Molecular weight (g/mol) Mass (g) 1000 9.394 2000 16.596 This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.
Why PDI cannot be less than 1? ResearchGate
WebNov 1, 1996 · The polydispersity index as a measure of the width of molecular weight distributions (MWD) is theoretically very important. However, considering MWDs of real … WebIf the 'number average molecular weight' and 'weight average molecular weight' of a polymer are 40,000 and 60,000 respectively, then calculate the polydispersity index of the polymer. Based on the value, predict the nature of polymer. Sol: Given, M w 60,000 and M n = 40,000. Therefore, PDI = M w /M n fluggesellschaft lot polish airlines
Living Polymerization - an overview ScienceDirect Topics
WebJan 19, 2005 · The general belief is that a polymer sample with higher PDI would have a “broader” molecular weight distribution, interpreted by a larger s n.However, it is clear … WebThe term polydispersity has multiple meanings that are dependent upon the context of its use. In the area of polymer chemistry, polydispersity is defined as the weight average divided by the number average molecular weight (M w/M n), and is used to give the researcher an idea of the breadth or width of the molecular weight distribution. WebA wide range of molecular weights were obtained with a very narrow polydispersity index of less than 1.09. The bulk samples prepared by slow evaporation from a polymer solution in chloroform exhibit well-defined microphase-separated structures with long-range order. greenely api