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Characterization of ring-shaped polystyrene

✍ Scribed by He Zhiduan; Yuan Meina; Zhang Xuanqi; Wang Xiaobing; Jin Xiaoming; Huang Jiaxian; Li Chunrong; Wang Linfu

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
266 KB
Volume
22
Category
Article
ISSN
0014-3057

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✦ Synopsis

A~tract--Fractions of ring-shaped polystyrene (RPS) of high molecular weight, and comparable samples of linear polystyrene (LPS), were characterized by gel permeation chromatography combined with laserlight scattering and by dilute solution viscometry. The ratio of intrinsic viscosities, g = [q],/[q]/= 0.65, and the ratio of unperturbed mean square radii of gyration, Go = (R ~ ),,,.

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## Abstract A series of well‐defined miktocycle number‐eight‐shaped copolymers composed of cyclic polystyrene (PS) and cyclic poly(Ρ‐caprolactone) (PCL) have been successfully synthesized by a combination of atom transfer radical polymerization (ATRP), ring‐opening polymerization (ROP), and β€œclick”