A simple approach for fabrication of a promising hyperbranched polyurethane-urea - sulfur (HBPU-Urea-Sulfur) hybrid coating material through the utilization of elemental sulfur

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2024-07-31 DOI:10.1016/j.reactfunctpolym.2024.106018

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Abstract

Hybrid coating based on hyper-branched polyurethane and elemental sulfur was synthesized by in-situ polycondensation and urethane reaction. The effect of Sulfur in the hydrogen bonding, thermo-mechanical properties and surface morphology of HBPU-Urea-Sulfur hybrid coating at 2 wt% concentration was notable objective of this work. Deconvolution studies confirmed that more hydrogen bonding interaction happened in HBPU-Urea coating. HBPU-Urea coating indicated better young's modulus and tensile strength compared to HBPU-Urea-Sulfur hybrid coating. Interestingly, the elongation percentage increased from 12% for HBPU-Urea to 18% for HBPU-Urea-Sulfur hybrid coating. Thermal stability of the coatings was examined by thermogravimetric analysis (TGA) depicted a 10 °C decrease in thermal stability for 2 wt% sulfur filled hybrid coating. Dynamic mechanical thermal analyzer (DMTA) analysis showed lower glass transition temperature and crosslinking density after addition of sulfur nanoparticles. The HBPU-Urea-Sulfur hybrid coating displays a smooth surface because the size of the sulfur nanoparticles is reduced, leading to uniform dispersion and achieve good compatibility. The HBPU-Urea-Sulfur hybrid coating possess superior antibacterial properties against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The antibacterial activity of coating is dependent on the presence of sulfur in the coating.

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利用元素硫制造前景广阔的超支化聚氨酯-尿素-硫（HBPU-尿素-硫）混合涂层材料的简单方法

通过原位缩聚和聚氨酯反应，合成了基于超支化聚氨酯和元素硫的混合涂料。这项工作的显著目标是研究 2 wt% 浓度的硫对 HBPU-尿素-硫杂化涂层的氢键作用、热机械性能和表面形貌的影响。解卷积研究证实，在 HBPU-Urea 涂层中发生了更多的氢键相互作用。与 HBPU-尿素-硫混合涂层相比，HBPU-尿素涂层具有更好的青年模量和拉伸强度。有趣的是，伸长率从 HBPU-Urea 的 12% 增加到 HBPU-Urea-Sulfur 混合涂层的 18%。热重分析（TGA）检测了涂层的热稳定性，结果表明，硫含量为 2 wt%的混合涂层的热稳定性降低了 10 °C。动态机械热分析仪（DMTA）分析表明，添加纳米硫颗粒后，玻璃化转变温度和交联密度降低。由于硫纳米粒子的尺寸减小，HBPU-尿素-硫混合涂层表面光滑，分散均匀，具有良好的相容性。HBPU-尿素-硫杂交涂层对大肠杆菌和金黄色葡萄球菌具有优异的抗菌性能。涂层的抗菌活性取决于涂层中硫的存在。

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

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.