Design and characterization of novel organometallic benzoxazine monomer with aluminum incorporation

IF 1.8 4区化学 Q3 POLYMER SCIENCE

High Performance Polymers Pub Date : 2025-11-27 DOI:10.1177/09540083251403199

Abdelmalek Habes, Oussama Mehelli, Mehdi Derradji, Slimane Abdous, M’hamed El Hadi Timtaoucine, Fouad Benaliouche, Yahia Khababa, Fatima Benchamma

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引用次数: 0

Abstract

In this study, a new organometallic benzoxazine monomer (BA-Al) was synthesized by incorporating an aluminum (Al) atom into the structure of bisphenol A (BPA) to obtain the Al-BPA molecule. The BA-Al monomer was then synthesized through a one-step Mannich reaction. The molecular structure of Al-BPA was confirmed by proton nuclear magnetic resonance ( 1 H NMR) and Fourier transform infrared spectroscopy (FTIR), revealing new peaks in the 1 H NMR spectrum due to the formation of Al-O bonds. The FTIR spectra also showed the characteristic Al-O vibration bands. For the BA-Al monomer FTIR analysis confirmed the presence of benzoxazine rings with characteristic bands. Additionally, peaks were associated with Al-O bonds. 1 H NMR analysis further confirmed the BA-Al structure, providing evidence for the presence of the oxazine ring. DSC analysis showed that BA-Al cures at a lower temperature compared to BA-a, likely due to the influence of aluminum. The TGA analysis of P(BA-Al) indicated significant degradation, while P(BA-a) starts decomposing at a higher temperature. Dynamic mechanical analysis (DMA) analysis revealed that P(BA-Al) has a lower storage modulus and glass transition temperature compared to P(BA-a). Monotonic tensile tests showed that both P(BA-a) and P(BA-Al) exhibit similar tensile strength and elongation trends at varying strain rates, but P(BA-a) consistently shows slightly higher ductility. Solubility tests indicated that both BA-a and BA-Al monomers exhibit good solubility in polar aprotic solvents, while the corresponding polymers show reduced solubility, with P(BA-Al) being more soluble in DMF and DMSO. Electrical conductivity measurements showed that Al-BPA has a conductivity of 89.92 S/m, BA-Al has a conductivity of 67.98 S/m, while BA-a exhibited negligible conductivity. This suggests that aluminum content plays a crucial role in enhancing electrical conductivity. The synthesized BA-Al monomer demonstrates promising properties for specialized applications, particularly in the field of electromagnetic protection.

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新型含铝有机金属苯并恶嗪单体的设计与表征

本研究通过在双酚a （BPA）结构中加入一个铝（Al）原子，合成了一种新的有机金属苯并恶嗪单体（BA-Al）。然后通过一步曼尼希反应合成BA-Al单体。通过质子核磁共振（1h NMR）和傅里叶变换红外光谱（FTIR）证实了Al-BPA的分子结构，发现由于Al-O键的形成，在1h NMR谱中出现了新的峰。FTIR光谱也显示出铝氧的特征振动带。对于BA-Al单体，FTIR分析证实存在具有特征带的苯并恶嗪环。此外，峰与Al-O键有关。1h NMR分析进一步证实了BA-Al结构，为恶嗪环的存在提供了证据。DSC分析表明，BA-Al比BA-a在更低的温度下固化，可能是由于铝的影响。经TGA分析，P（BA-Al）降解明显，而P（BA-a）在较高温度下开始分解。动态力学分析（DMA）表明，与P（BA-a）相比，P（BA-Al）具有更低的存储模量和玻璃化转变温度。单调拉伸试验表明，P（BA-a）和P（BA-Al）在不同应变速率下表现出相似的抗拉强度和伸长率趋势，但P（BA-a）的延展性略高。溶解度测试表明，BA-a和BA-Al单体在极性非质子溶剂中具有良好的溶解度，而相应的聚合物的溶解度则降低，其中P（BA-Al）在DMF和DMSO中更易溶解。电导率测量表明，Al-BPA的电导率为89.92 S/m， BA-Al的电导率为67.98 S/m，而BA-a的电导率可以忽略不计。这表明铝含量在提高导电性方面起着至关重要的作用。合成的BA-Al单体具有良好的应用前景，特别是在电磁保护领域。

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来源期刊

High Performance Polymers 化学-高分子科学

CiteScore

4.20

自引率

14.30%

发文量

106

审稿时长

1.2 months

期刊介绍： Health Services Management Research (HSMR) is an authoritative international peer-reviewed journal which publishes theoretically and empirically rigorous research on questions of enduring interest to health-care organizations and systems throughout the world. Examining the real issues confronting health services management, it provides an independent view and cutting edge evidence-based research to guide policy-making and management decision-making. HSMR aims to be a forum serving an international community of academics and researchers on the one hand and healthcare managers, executives, policymakers and clinicians and all health professionals on the other. HSMR wants to make a substantial contribution to both research and managerial practice, with particular emphasis placed on publishing studies which offer actionable findings and on promoting knowledge mobilisation toward theoretical advances. All papers are expected to be of interest and relevance to an international audience. HSMR aims at enhance communication between academics and practitioners concerned with developing, implementing, and analysing health management issues, reforms and innovations primarily in European health systems and in all countries with developed health systems. Papers can report research undertaken in a single country, but they need to locate and explain their findings in an international context, and in international literature.