| 含水杨酸的缩聚物对P-硝基苯酚乙酸酯水解反应的催化作用(Ⅱ) |
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| 引用本文： | 何炳林,黄文强,赵书燕.含水杨酸的缩聚物对P-硝基苯酚乙酸酯水解反应的催化作用(Ⅱ)[J].高分子学报,1982,0(6):423-427. |
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| 作者姓名： | 何炳林 黄文强 赵书燕 |
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| 作者单位： | 南开大学化学系
(何炳林，黄文强)，南开大学化学系(赵书燕) |
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| 摘 要： | 水杨酸、甲醛和烷基伯胺(烷基:甲基,正-丙基,正-己基或正-十二烷基)通过Mannich缩合反应制得了主链上既含有水杨酸基又含有叔胺基的线型缩聚物。用这些缩聚物催化P-硝基苯酚乙酸酯(PNPA)水解反应的动力学研究结果表明,缩聚物的催化活性随N-烷基侧链的链长增加而增加。在催化剂过量的条件下,带有十二碳烷基侧链的缩聚物催化PNPA水解反应时符合简单的Michaelis-Menten动力学历程。
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| 收稿时间： | 1981-10-30 |
CATALYSIS OF CONDENSATION POLYMERS CONTAINING SALICYLIC ACID FOR HYDROLYSIS OF P-NITROPHENYL ACETATE IN AQUEOUS SOLUTION (Ⅱ) |
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| He Bing-lin,Huang Wen-qiang,Zhao Shu-yan.CATALYSIS OF CONDENSATION POLYMERS CONTAINING SALICYLIC ACID FOR HYDROLYSIS OF P-NITROPHENYL ACETATE IN AQUEOUS SOLUTION (Ⅱ)[J].Acta Polymerica Sinica,1982,0(6):423-427. |
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| Authors: | He Bing-lin Huang Wen-qiang Zhao Shu-yan |
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| Institution: | Department of Chemistry; NanTcai University |
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| Abstract: | As a model of Serine hydrolase, the p olycondensates of salicylic acid, formaldehyde and methyl, n-propyl, n-hexyl, or n-lauryl amine were prepared by Mannich's condensation. The catalytic activities of the above polymers for hydrolysis, of p-nitrophenyl acetate (PNPA), were investigated. It was found kinetically that the rate of hydrolysis of PNPA increases with increasing length of the alkyl groups in the side-chain of the polymers. Hydrolysis of PNPA catalyzed by the polycondensate of salicylic acid, formaldehyde and n-laurylamine proceeded by the simple Michaelis-Menten type mechanism. The kinetics parameters were obtained as: Km=6.7×10-5M,and Vmax=2.07×10-7M·min-1. |
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