p-Anisidine release study by hydrolysis of Schiff bases in homogeneous media

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia Pub Date : 2023-03-06 DOI:10.4314/bcse.v37i3.16

Awatif Amaria Moulay, Kheira Diaf, Zineb Elbahri, Abderrezzak Mesli, N. Chafi, N. Besbes

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Abstract

ABSTRACT. The objective of this work is to study the release of p-anisidine by the hydrolysis of synthesized Schiff bases N-vinylbenzylidene-p-anisidine (Im) as a monomer and its copolymers (Cp1, Cp2) with N,N-dimethylacrylamide (DMA). The hydrolysis behavior and kinetics are investigated in homogeneous media composed of ethanol/water (80% v/v) at 37 °C and at pH range of 4.0-10.0. The variation of the concentration over time is measured in thermostatically cells using UV-Vis spectroscopy. The results showed that the imine function hydrolysis obeyed to the first order for all compounds; the experimental kinetic constants are determined and the pH–rate diagram profile is established. It is noticed that the hydrolysis of imine function is extremely dependent on its carrier and the pH medium. KEY WORDS: p-Anisidine, Copolymer, Schiff base, Hydrolysis, pH–rate diagram, Controlled release Bull. Chem. Soc. Ethiop. 2023, 37(3), 745-755. DOI: https://dx.doi.org/10.4314/bcse.v37i3.16

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均匀介质中席夫碱水解对茴香胺释放研究

摘要研究了合成的希夫碱N-乙烯基苄基-对苯胺(Im)单体及其与N,N-二甲基丙烯酰胺(DMA)的共聚物(Cp1, Cp2)水解对茴香胺的释放。在乙醇/水(80% v/v)组成的均匀介质中，在37°C和pH范围为4.0-10.0的条件下，研究了水解行为和动力学。浓度随时间的变化是用紫外-可见光谱法在恒温细胞中测量的。结果表明，所有化合物的亚胺功能水解均服从一级;确定了实验动力学常数，建立了ph -速率图剖面。注意到亚胺的水解功能对其载体和pH介质有极大的依赖性。关键词:对茴香胺，共聚物，席夫碱，水解，ph图，控释化学。Soc。阿比西尼亚人。2023年,37 (3),745 - 755 . DOI: https://dx.doi.org/10.4314/bcse.v37i3.16

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来源期刊

Bulletin of the Chemical Society of Ethiopia 化学-化学综合

CiteScore

2.20

自引率

8.30%

发文量

113

审稿时长

6-12 weeks

期刊介绍： The Bulletin of the Chemical Society of Ethiopia (BCSE) is a triannual publication of the Chemical Society of Ethiopia. The BCSE is an open access and peer reviewed journal. The BCSE invites contributions in any field of basic and applied chemistry.