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本工作采用一种改进的一膜两室渗透计和简便动态渗透压法测定了一系列聚合物的数均分子量,该法操作方便、快速、可靠,测定分子量相对误差在±5%以内。
In this work, an improved one-membrane two-chamber osmometer and simple dynamic osmotic pressure method were used to determine the number-average molecular weight of a series of polymers. The method was simple, rapid and reliable, and the relative molecular weight was less than ± 5%.