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s*****i
发帖数: 146 | 1 I want to do ROP to obtain PLA-PEG-PLA. How much catalyst (I use Sn(Oct)2)
is usually used? (molar ratio to OH of PEG or LA)? I use toluene as solvent
and I see in the literature the reaction temp is 110. But the reaction is
working under N2 or closed system. Will toluene boil and the reaction
explode?
This is the first time I do this reaction, so there are too many questions.
Thank you for your kind suggestions and answers. | s****e
发帖数: 2934 | 2 你不用油浴的bubbler吗？去chemglass买一个。你的反应用3口烧瓶，两边加上水冷凝
管，一边进N2一边出N2，出氮气的冷凝管再和bubbler相连。如果是close system就用
冷凝管加baloon。
推荐看 The manipulation of air sensitive compounds 这本书
catalyst的用量为啥不自己查文献？
solvent
.
【在 s*****i 的大作中提到】
: I want to do ROP to obtain PLA-PEG-PLA. How much catalyst (I use Sn(Oct)2)
: is usually used? (molar ratio to OH of PEG or LA)? I use toluene as solvent
: and I see in the literature the reaction temp is 110. But the reaction is
: working under N2 or closed system. Will toluene boil and the reaction
: explode?
: This is the first time I do this reaction, so there are too many questions.
: Thank you for your kind suggestions and answers.
| s*****i
发帖数: 146 | 3 thank you very much
I checked in the literature, But the amount of cat used varied from 0.1 to
50 mol% of OH . I do not know which one do i need to use |
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