STUDIES ON THE MOLECULAR WEIGHT DISTRIBUTION OF POLY-2, 6-DIMETHYL-l, 4-PHENYLENE OXIDE AND ITS RELATIONSHIP WITH IMPACT STRENGTH

SANG Ming-min; JIN Nan-ni

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STUDIES ON THE MOLECULAR WEIGHT DISTRIBUTION OF POLY-2, 6-DIMETHYL-l, 4-PHENYLENE OXIDE AND ITS RELATIONSHIP WITH IMPACT STRENGTH

Research Article | 更新时间：2021-03-19

- STUDIES ON THE MOLECULAR WEIGHT DISTRIBUTION OF POLY-2, 6-DIMETHYL-l, 4-PHENYLENE OXIDE AND ITS RELATIONSHIP WITH IMPACT STRENGTH
- Acta Polymerica Sinica Issue 1, Pages: 76-80(1990)
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- Published：20 February 1990，
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SANG Ming-min, JIN Nan-ni. STUDIES ON THE MOLECULAR WEIGHT DISTRIBUTION OF POLY-2, 6-DIMETHYL-l, 4-PHENYLENE OXIDE AND ITS RELATIONSHIP WITH IMPACT STRENGTH. [J]. Acta Polymerica Sinica (1):76-80(1990)
DOI：

SANG Ming-min, JIN Nan-ni. STUDIES ON THE MOLECULAR WEIGHT DISTRIBUTION OF POLY-2, 6-DIMETHYL-l, 4-PHENYLENE OXIDE AND ITS RELATIONSHIP WITH IMPACT STRENGTH. [J]. Acta Polymerica Sinica (1):76-80(1990) DOI：

摘要

本工作建立了室温下用凝胶色谱法(GPC)测定聚2

6-二甲基苯醚(PPO)树脂分子量、分子量分布的方法。淋洗剂不采用文献申报道的毒性较大者

也不在较高柱温下进行

而采用甲苯(或氯仿)在室温下测定。对样品在甲苯中溶解温度、浓度和稳定性等都进行了系统研究

找到了最优化条件。GPC数据结合改性PPO(MPPO)产品性能测定结果

经仔细分析找到了影响MPPO产品质量的一个重要因素是PPO树脂中低分子量部分含量。它与产品冲击强度有明显的依赖关系。提出了一个从CPC谱图确定低分子量部分含量的方法。

Abstract

GPC method was established for the determination of molecular weight distributions of poly-2

6-dimethyl-1

4-phenylene oxide. Toluene at roon temperature was used as the eluent instead of o-dichlorobenzene at 80℃ or toluene at 60℃ as reported in literature.From the data of GPC and of Impact strength of the modified PPO

there exists a relationship. Impact strength decreases as the low molecular weight content (M≤6000) increases.

关键词

聚26-二甲基苯醚凝胶色谱分子量分布高聚物结构性能关系

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