NOVEL HYPERBRANCHED POLY（PHENYLENE OXIDE）S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY

李效玉

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NOVEL HYPERBRANCHED POLY（PHENYLENE OXIDE）S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY

Updated：2021-06-21

- NOVEL HYPERBRANCHED POLY（PHENYLENE OXIDE）S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY
- NOVEL HYPERBRANCHED POLY（PHENYLENE OXIDE）S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY
- 高分子科学（英文版） 2006年第4期页码：413-419
- Affiliations：
  
  The Key Laboratory for Nanomaterials Ministry of Education College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China ,100029
- Author bio：
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China （No. 50473042）the Beijing Natural Science Foundation （No. 2042017）.()
- DOI：
  中图分类号： O631.3
- 纸质出版：2006
- Accepted：
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[1]李效玉.NOVEL HYPERBRANCHED POLY(PHENYLENE OXIDE)S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY[J].Chinese Journal of Polymer Science,2006(04):413-419.

NOVEL HYPERBRANCHED POLY（PHENYLENE OXIDE）S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY[J]. 2006, (4): 413-419.
[1]李效玉.NOVEL HYPERBRANCHED POLY(PHENYLENE OXIDE)S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY[J].Chinese Journal of Polymer Science,2006(04):413-419. DOI：

NOVEL HYPERBRANCHED POLY（PHENYLENE OXIDE）S WITH PHENOLIC TERMINAL GROUPS: EFFECTS OF REACTION TIME AND CORE MOLECULES ON THE MOLECULAR WEIGHT AND POLYDISPERSITY[J]. 2006, (4): 413-419. DOI：

摘要

<正>A novel hyperbranched poly（phenylene oxide）（HPPO） with phenolic terminal groups was prepared from 4-bromo-4’

4"-dihydroxytriphenylmethane as AB2 monomer in dimethylsulfoxide （DMSO） via a modified Ullmann reaction. The molecular weight and polydispersity （PD） of the resulting polymers increased with increasing reaction time. In the presence of core molecules （bisphenol A and 1

5-trihydroxybenzene）

which have the similar molecular backbones to the reactive monomer

the molecular weight could be controlled by varying the core-to-monomer ratio. Incorporation of a very small amount of core molecules could lead to a higher molecular weight as compared with that without the addition of core molecules. However

when the core content reached certain extent

the molecular weight would decrease with the further increase in the core content. A new similar behavior of control over the PD was also obtained. The resulting polymers were characterized by 1H-NMR

13C-NMR

FT-IR

and GPC.

Abstract

A novel hyperbranched poly（phenylene oxide）（HPPO） with phenolic terminal groups was prepared from 4-bromo-4’

5-trihydroxybenzene）

which have the similar molecular backbones to the reactive monomer

when the core content reached certain extent

the molecular weight would decrease with the further increase in the core content. A new similar behavior of control over the PD was also obtained. The resulting polymers were characterized by 1H-NMR

13C-NMR

FT-IR

and GPC.

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