Synthesis and application of Aromatic Schiff base waterborne polyurethane as visible-light triggered self-healing polymer and anticorrosion coating using h-BN/GO/NiO nano-composite

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Polymer Testing Pub Date : 2024-11-22 DOI:10.1016/j.polymertesting.2024.108649

Masoumeh Kianfar , Mir Saeed Seyed Dorraji , Mohammad Hossein Rasoulifard , Alireza Rahimi , Sohrab Rahmani

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Abstract

Herein, a self-healing waterborne polyurethane (WPU) based on a novel visible light-stimulated healing agent from the aromatic Schiff base family (SBWPU) was synthesized. Moreover, this polymer exhibited remarkable mechanical properties, making it an ideal matrix for the preparation of a new nano-composite coating using hexagonal-boron nitride/graphene oxide/nickel oxide (h-BN/GO/NiO) nano-composite for anti-corrosion applications. SBWPU containing 15 wt % of synthesized healing agent (SBWPU-15) demonstrated favorable healing properties (80.03 %) under a visible light lamp after 24 h (at ambient temperature). SBWPU containing 20 % of the healing agent (SBWPU-20) showed high mechanical properties (20.80 MPa) and an increase in its hydrophobic properties. Additionally, its water absorption rate decreased, making it an attractive option as a polymer matrix for anti-corrosion coating applications. The nano-composite coatings (CSBWPU) were formulated by introducing varying amounts of h-BN/GO/NiO into the SBWPU-20. The coatings displayed an increase in contact angle and a decrease in water absorption rate. The electrochemical impedance spectroscopy (EIS) results revealed that the 0.75-CSBWPU, containing 0.75 % nano-composite, had the highest corrosion resistance (1.58 × 10¹⁰ Ω cm²) after 90 days of immersion in seawater. This work offers a potentially helpful concept for developing an eco-friendly, secure, uncomplicated accessibility self-healing polymeric system with controllable mechanical features, which are also favorable for designing novel corrosion protection composite coatings.

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利用 h-BN/GO/NiO 纳米复合材料合成和应用芳香族席夫碱水性聚氨酯作为可见光触发的自修复聚合物和防腐涂层

本文合成了一种自愈合水性聚氨酯（WPU），它基于芳香族席夫碱家族的一种新型可见光刺激愈合剂（SBWPU）。此外，这种聚合物还具有出色的机械性能，使其成为使用六方氮化硼/氧化石墨烯/氧化镍（h-BN/GO/NiO）纳米复合材料制备新型纳米复合涂层的理想基质，可用于防腐蚀应用。含有 15% 合成愈合剂的 SBWPU（SBWPU-15）在可见光灯下 24 小时后（环境温度下）显示出良好的愈合性能（80.03%）。含有 20% 愈合剂的 SBWPU（SBWPU-20）显示出较高的机械性能（20.80 兆帕），其疏水性能也有所提高。此外，它的吸水率也降低了，使其成为防腐蚀涂层应用中一种有吸引力的聚合物基质。通过在 SBWPU-20 中引入不同数量的 h-BN/GO/NiO，配制出了纳米复合涂层（CSBWPU）。涂层的接触角增大，吸水率降低。电化学阻抗谱（EIS）结果显示，在海水中浸泡 90 天后，含有 0.75 % 纳米复合材料的 0.75-CSBWPU 具有最高的耐腐蚀性（1.58 × 1010 Ω cm2）。这项研究为开发一种生态友好、安全、无障碍、具有可控机械特性的自愈合聚合物系统提供了一个潜在的有益概念，这也有利于设计新型防腐蚀复合涂层。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.