The partially disentangled polymer samples prepared are expected to crystallize easier than bulk polymers,which can be attributed to much fewer interchain entanglements within and between particles.Poly(vinyl chloride...The partially disentangled polymer samples prepared are expected to crystallize easier than bulk polymers,which can be attributed to much fewer interchain entanglements within and between particles.Poly(vinyl chloride) (PVC) samples were prepared by freeze-extracting the solutions in various solvents and with varying concentrations.The results of FTIR analysis showed that when the concentrations of the solutions were lower than the overlap concentration c*,the PVC samples prepared from the good solvent had more ordered structure due to much fewer interchain entanglements.While the concentrations of the solutions were higher than c*,the PVC samples prepared from the bad solvents had more ordered structure.展开更多
文摘The partially disentangled polymer samples prepared are expected to crystallize easier than bulk polymers,which can be attributed to much fewer interchain entanglements within and between particles.Poly(vinyl chloride) (PVC) samples were prepared by freeze-extracting the solutions in various solvents and with varying concentrations.The results of FTIR analysis showed that when the concentrations of the solutions were lower than the overlap concentration c*,the PVC samples prepared from the good solvent had more ordered structure due to much fewer interchain entanglements.While the concentrations of the solutions were higher than c*,the PVC samples prepared from the bad solvents had more ordered structure.
