由水-丙酮体系射频等离子体产生的自由基的浓度的测定

THE RADICAL CONCENTRATION DETERMINED BY DPPH IN THE REACRON OF PLASMA INITIATION AQUEOUS POLYMERIZATION

用自由基捕捉剂１，１－二苯基－２－三硝基苯肼（ＤＰＰＨ）对等离子体引发水溶液体系聚合时体系中的自由基浓度进行了测定．发现在等离子体引发水溶液聚合体系中，自由基浓度随放电功率，放电时间的增加而增加，而且当体系中加入单体后，在同样的条件下体系中的自由基浓度比未加单体时的浓度高．

The radical concentration has been determined by DPPH in the reaction of plasma ini- tiation aqueous polymerization. It discovered that in the reaction system the radical concentration increased when the discharge power and discharge time increase. The radical concentration is high when the monomer existed in the reaction system.