| 1,3-丙二醇中残留羰基对PTT切片色相的影响 |
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| 引用本文： | 张俊. 1,3-丙二醇中残留羰基对PTT切片色相的影响[J]. 合成纤维工业, 2001, 24(4): 19-21 |
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| 作者姓名： | 张俊 |
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| 作者单位： | 合成纤维国家工程研究中心, |
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| 摘 要： | 阐述了 1,3-丙二醇 ( PDO)的主要杂质之一残留羰基的来源、分析方法及其纯化 ,并探讨了降低残留羰基含量对改善聚对苯二甲酸丙二醇酯 ( PTT)切片色相的作用。结果表明 :用 PTA法合成 PTT时 ,切片的 b* 值较高 ,且合成较难 ;PDO中残留羰基含量是影响 PTT色泽的一个重要因素 ,经碱化减压蒸馏 ,可降低其残留羰基着色度、水分等。
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| 关 键 词： | 1,3-丙二醇 聚对苯二甲酸丙二醇酯 残留羰基 黄色指数 |
| 文章编号： | 1001-0041(2001)04-0019-03 |
| 修稿时间： | 2000-12-29 |
The Effect of Residual Carbonyl in 1,3-Propanediol on Yellowness Index of Polytrimethylene Terephthalate Chips |
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| Zhang Jun. The Effect of Residual Carbonyl in 1,3-Propanediol on Yellowness Index of Polytrimethylene Terephthalate Chips[J]. China Synthetic Fiber Industry, 2001, 24(4): 19-21 |
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| Authors: | Zhang Jun |
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| Abstract: | The origin, analysis method and depuration of residual carbonyl in 1,3|propanediol(PDO) were described. The effect of residual carbonyl content on yellowness index of polytrimethylene terephthalate(PTT) chip was discussed. The results showed that it was hard to synthesize PTT from PTA and the resulted b * value was relatively high. The content of residual carbonyl in PDO was an utmost important factor connected with yellowness index of PTT. Subjected to alkalization and underpressure distillation, PTT contained less residual carbonyl and the heat dyeing ability and water content were improved. |
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| Keywords: | propanediol polytrimethylene terephthalate residual carbonyl yellowness index |
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