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采用KrF准分子激光 (2 4 8nm)引发了丙烯酸的聚合反应。用GPC凝胶色谱对分子量进行了测定 ,初步探索了紫外激光引发的丙烯酸聚合规律。实验结果表明 ,加入H2 O2 后的聚合反应为自由基聚合反应。在此实验的范围内 ,聚合得到的聚丙烯酸的分子量随着丙烯酸水溶液浓度的降低、激光辐照时间的减少和单脉冲能量的增加而增加。
The use of KrF excimer laser (248nm) initiated the polymerization of acrylic acid. The gel permeation chromatography (GPC) was used to determine the molecular weight of the product. The polymerization rules of acrylic acid induced by ultraviolet laser were preliminarily explored. The experimental results show that the polymerization reaction after adding H2 O2 is free radical polymerization. Within the scope of this experiment, the molecular weight of the polymerized polyacrylic acid increases with decreasing concentration of the aqueous acrylic acid solution, reduction of laser irradiation time, and increase of single-pulse energy.