用溶剂溶胀平衡法测定了聚氨酯单一网络的单位体积内有效交联链的数目和交联点间平均分子量。
The number of effective crosslinking chains per unit volume (ve) and the average molecular weights between crosslinks (Mc) were determined by means of equilibrium swelling measurement.
分子量较大的药物较易在肿瘤内部积聚，从而能在较长时间内保持一定的有效药物浓度。
In contrast, the drug with higher molecular weight tends to accumulate and maintain an effective concentration in tumor for a longer period.
原子转移自由基聚合(ATRP)反应是实现活性聚合的一种颇为有效的途径，可以合成分子量可控、分子量分布窄的各种聚合物。
Atom transfer radical polymerization (ATRP), which can yield polymers with controlled molecular weight and low polydispersity, is an effective approach to realize living radical polymerization.
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