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Subject: narrow chain length distribution chem. In order to obtain polyethylene oxide with a desirable average molecular weight, it is important to note that in such cases it is necessary to use polyethylene oxides, which have an average molecular weight closest to the desired molecular weight to "ensure a narrow chain length distribution". For example mixing equal amounts of polyethylene oxide 200 000 and polyethylene oxide 600 000 to obtain polyethylene oxide 400 000.узкое распределение длин цепи? Дословно, чо-то очень странное.
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