| 聚丁二酸丁二醇酯切片端羧基滴定方法优化 |
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| 引用本文： | 王新良,甘胜华,冯静,王秀筠,汪少朋. 聚丁二酸丁二醇酯切片端羧基滴定方法优化[J]. 聚酯工业, 2012, 25(4): 20-22 |
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| 作者姓名： | 王新良 甘胜华 冯静 王秀筠 汪少朋 |
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| 作者单位： | 1. 中国纺织科学研究院,北京,100025
2. 上海聚友化工有限公司,上海,201508 |
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| 摘 要： | 采用化学试剂滴定的方法测定聚丁二酸丁二醇酯切片的端羧基值,对溶剂的配比、滴定溶剂选择、指示剂的选择等影响因素进行条件试验。研究发现,用氯仿作为溶剂,以0.05 mol/L的NaOH-乙醇溶液作为滴定剂,以百里香酚蓝作指示剂,滴定终点颜色由黄色变为蓝色,颜色变化明显,平行性和准确性都很好。
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| 关 键 词： | 聚丁二酸丁二醇酯 端羧基值 滴定法 |
Measurement optimization of carboxyl end group content in PBGS |
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| WANG Xin-liang , GAN Sheng-hua , FENG Jing , WANG Xiu-jun , WANG Shao-peng. Measurement optimization of carboxyl end group content in PBGS[J]. Polyester Industry, 2012, 25(4): 20-22 |
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| Authors: | WANG Xin-liang GAN Sheng-hua FENG Jing WANG Xiu-jun WANG Shao-peng |
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| Affiliation: | 1. China Textile Academy, Beijing 100025, China ;2. Shanghai Joyou Chemical Engineering Co. , Ltd, Shanghai 201508, China) |
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| Abstract: | The measurement of carboxyl end group content in PBGS was discussed by a chemical titration method. The orthogonal optimization of testing conditions was studied, such as volume proportion of dissolving solvent, titration solvent, indicator. The results showed that ： the optimum solvent is Chloroform and concentration of NaOH/ethanol solution O. 05 mol/L was used as titrant. Bromophenol blue was indicator. Yellow changing to blue was used as the end of titration. It had good accuracy and parallelism. |
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| Keywords: | polybutylene glycol succinate carboxyl end group value titration |
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