Changing the structural and physical properties of 3-arm star poly(δ-valerolactone)s by a branch-point design
Changing the structural and physical properties of 3-arm star poly(δ-valerolactone)s by a branch-point design
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DOI：
10.1039/d1cc01092a
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发表时间：
2021-03-16
影响因子：
4.9
通讯作者：
Fukushima, Takanori
中科院分区：
文献类型：
--
作者：
Ogiwara, Hibiki;Ishiwari, Fumitaka;Fukushima, Takanori
星形聚合物的分支点的化学结构被认为对整个聚合物的物理性质具有小的影响。与此相反的一般概念，在这里，我们表明，一个3臂星星聚合物，由三个聚（δ-戊内酯）臂从一侧的三蝶烯分支点延伸，表现出显着高的复数粘度相比，类似的星形聚合物与一个分支点的三蝶烯异构体或三苯基乙烷。
The chemical structure of a branch point of star-shaped polymers has been considered to have a small influence on the physical properties of the entire polymer. Contrary to this general notion, here we show that a 3-arm star polymer, composed of three poly(delta-valerolactone) arms extended from one side of a triptycene branch point, exhibits a remarkably high complex viscosity, compared to the analogous star-shaped polymers with a branch point of a triptycene isomer or triphenylethane.