STUDIES ON ULTRASONIC GRAFTING OF POLY (VINYL ACETATE) WITH POLY (ETHYLENE OXIDE)

Li Wen-duan; XU Xi

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STUDIES ON ULTRASONIC GRAFTING OF POLY (VINYL ACETATE) WITH POLY (ETHYLENE OXIDE)

Research Article | 更新时间：2021-03-19

- STUDIES ON ULTRASONIC GRAFTING OF POLY (VINYL ACETATE) WITH POLY (ETHYLENE OXIDE)
- Acta Polymerica Sinica Issue 1, Pages: 31-38(1983)
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- Published：20 February 1983，
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Li Wen-duan, XU Xi. STUDIES ON ULTRASONIC GRAFTING OF POLY (VINYL ACETATE) WITH POLY (ETHYLENE OXIDE). [J]. Acta Polymerica Sinica (1):31-38(1983)
DOI：

Li Wen-duan, XU Xi. STUDIES ON ULTRASONIC GRAFTING OF POLY (VINYL ACETATE) WITH POLY (ETHYLENE OXIDE). [J]. Acta Polymerica Sinica (1):31-38(1983) DOI：

摘要

本文分别研究了聚氧化乙烯(PEO)和聚醋酸乙烯酯(PVAc) 在苯溶液中的超声波辐照降解

PEO与PVAc在苯溶液中的超声波辐照共聚反应。实验证明

降解反应可用Ovenall方程描述。用IR、NMR和DTA分析了在超声波辐照作用下PEO与PVAc在苯溶液中生成的共聚物的结构

证明所得产物主要为接枝共聚物

将浓度为1％的(PEO-PVAc)苯溶液在频率为18.2kHz、逆变器主迥路输入电流为2.0安的超声波强度下

辐照10分钟

共聚物的产率为10.54％

接枝点密度为33.3％

平均接枝链长为17。

Abstract

The ultrasonic degradation of poly(ethylene oxide) and poly(vinyl acetate) in benzene solution

and grafting reaction of poly (vinyl acetate) with poly(ethylene oxide) were studied. It has been found that the chain-scission reactions follow the course suggested by Ovenall

D. W. The structure of the copolymer was identified by IB

NMB and DTA

to be a graft copolymer mainly. The copolymer

formed by irradiating 1% PEO-PVAc solution (PEO/PVAc = 1/1 by weight) for a period of 10 min. at 18.2 kHz with 2.0 A input current on reversed main circuit

amounts to 10.54%.

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