英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下,

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英语翻译StisaneffectivesoluteforPStandthepolymerchain’sdiffusionisfairlyeasy,soAuto-accelerationoccursla

英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下,
英语翻译
St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.
请懂专业的人翻译下,

英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下,
St一般指的是苯乙烯
这句话的意思是
苯乙烯本身是聚苯乙烯的良溶剂,聚合物的链式扩散非常容易,因此自动加速现象比其他出现的要晚许多
我觉得这句话有一点小小的错误,这里的solute应该是solvent
solute是溶质,solvent是溶剂
自动加速现象一般是随着自由基反应进行到中期
聚合物生成后导致体系粘度增加所引起
粘度增大直接导致链自由基的终止速率受抑制
出现不断的加速聚合
这种现象的存在是有害的,常常影响产物的质量,出现爆聚
也会出现局部积热的危险情况
一般如果单体如果是聚合物的良溶剂的话
聚合物转化后体系粘度不会显著上升
会使得自由基聚合的自动加速现象推迟
如果能控制转化率的话甚至可以做到不出现自动加速现象
如果单体不是聚合物的良溶剂
则可以通过在聚合物的良溶剂的溶液体系里面进行聚合
当上述办法都无法成立的时候,会考虑在体系能加入链转移剂

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