| 聚苯醚中羟基含量测定 |
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| 引用本文： | 盘文辉. 聚苯醚中羟基含量测定[J]. 分析测试技术与仪器, 2017, 23(3): 184-188. DOI: 10.16495/j.1006-3757.2017.03.008 |
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| 作者姓名： | 盘文辉 |
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| 作者单位： | 广东生益科技股份有限公司 国家电子电路基材工程技术研究中心,广东东莞,523808 |
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| 摘 要： | 使用红外吸收光谱法(IR)和凝胶渗透色谱法(GPC)分析了乙酸酐与聚苯醚酯化反应前后聚苯醚的结构变化.结果表明,加热和催化条件下,乙酸酐可与聚苯醚的羟基彻底反应生成酯.加水将过量的乙酸酐水解成乙酸,通过氢氧化钾乙醇溶液滴定乙酸的量可以测定聚苯醚的羟基含量.测得一种聚苯醚的羟基当量平均值为851.6 g/mol,结果稳定.
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| 关 键 词： | 聚苯醚 羟基 酯化反应 红外吸收光谱法 凝胶渗透色谱法 电位滴定 |
| 收稿时间： | 2017-06-27 |
| 修稿时间： | 2017-08-02 |
Determination of OH Group Content in Polyphenylene Oxide |
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| PAN Wen-hui. Determination of OH Group Content in Polyphenylene Oxide[J]. Analysis and Testing Technology and Instruments, 2017, 23(3): 184-188. DOI: 10.16495/j.1006-3757.2017.03.008 |
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| Authors: | PAN Wen-hui |
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| Affiliation: | Shengyi Technology Co. Ltd., National Engineering Research Center of Electronic Circuits Base Materials, Dongguan 523808, Guangdong China |
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| Abstract: | The esterification reaction of acetic anhydride and polyphenylene oxide(PPO) was studied by IR and GPC. The results showed that acetic anhydride can react with the OH group of PPO to form ester under heating and catalyzing. Excess acetic anhydride would hydrolyze into acetic acid. The OH group content of PPO can be measured by titration of potassium hydroxide alcohol solution with acetic acid. One kind of PPO was measured by this method and the OH group content was 851.6 g/mol by average. The results were stable. |
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| Keywords: | PPO OH group esterification IR GPC acid-base titration |
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