【摘要】 本文研究了在高效凝胶色谱中流速、溶剂性能对高分子降解的影响,考察了几种高聚物的降解情况。实验表明,降解随流速增加而增加,不良溶剂比良溶剂的降解更严重,降解的临界分子量与溶剂性能有关。并讨论了产生降解的原因。更多还原

【Abstract】 The effects of flow rate and solvent on the degradation of several polymers have been investigated by high performance GPC in this paper. It is shown that the degradation increases with increasing flow rate. There is more serious degradation in poor solvent than in good solvent. The critical molecular weight(below which no degradation will occur) depends on the nature of solvent. The reasons for the degradation in GPC are discussed.更多还原