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测定了不同的共聚物样品在海水中的释放曲线，发现分子量大小、分子量分布及共聚物组成是影响其释放性能的三个主要因素．共聚物样品的初期释放速率主要受控于分子量的分布；在进入释放平稳期后，释放速率则取决于共聚物中ＴＢＴＭ单元的含量；进入平稳期的时间长短与共聚物的分子量大小及分布有相应的关系．
The release curves of different copolymer samples in seawater were determined. It was found that the molecular weight, molecular weight distribution and copolymer composition are the three main factors affecting the release performance. The initial release rate of the copolymer samples is mainly controlled by the molecular weight distribution; the release rate depends on the content of TBTM units in the copolymer after entering the plateau; the length of time into the plateau and the molecular weight distribution and distribution of copolymer Corresponding relationship.