英语语法分析

Vinyl sulfonate monomers were experimentally found of lower reactivity and couldn't effectively copolymerize with MMA and MAA.

实验发现乙烯基磺酸酯类单体活性较低，与MMA和MAA单体聚合时不能很好的参与聚合反应。

Its branch chains having double bond can copolymerize with vinyl monomers (such as styrene or vinyl toluene) forming a thermosetting resin.

该树脂具有外双健，可与各种乙烯基单体进一步共聚形成一系列热固性树脂。

Poly(p-dioxanone) has high degree of crystallinity which limited it to copolymerize with other monomers to be used as controlled drug release materials.

但聚二氧六环酮的结晶度较高，不适合直接用做药物控释材料，需要与其他单体进行共聚以改善其亲水性和结晶性等性质。