Crude product by simple distillation, styrene recovery was 89.41% of total styrene monomer purity of 99.9%, and catalyst recycling, the effect is better.
粗产物经简单蒸馏，苯乙烯的总回收率为89.41%，苯乙烯单体纯度可达99.9%以上，并对催化剂进行再生利用，效果较为理想。
The factors affecting the PDLLA molecular weight were found to be the monomer purity, the catalyst concentration, the polymerization temperature, the polymerization time and the vacuum.
研究了影响PDLLA分子量的因素包括丙交酯单体的纯度、催化剂的浓度、反应温度、反应时间及真空度等。
GC-MS method of testing was carried on quantitative analysis to the monomer purity after being purified finally, the result was revealed that is up to 95% for the purity after being purified.
采用GC - MS测试方法对提纯之后的单体纯度进行定量分析，结果显示为提纯之后的单体纯度达到了95%。
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