Duan Jihua, Jiang Guichang
College of Light Industry Science and Engineering, Tianjin University of Science and Technology, Tianjin 300222, China.
Department of Chemistry, Tsinghua University, Beijing 100084, China.
Polymers (Basel). 2022 Jan 5;14(1):213. doi: 10.3390/polym14010213.
Novel physically crosslinked polyurethane (PUII), based on isophorone diisocyanates, was prepared by a conventional two-step method. The chemical structures of the PUII were characterized by fourier transform infrared (FTIR), proton nuclear magnetic resonance (H NMR), gel permeation chromatography (GPC), scanning electron microscopy (SEM) and DSC. The PUII hydrogels were subjected to solvent-induced self-assembly in THF + water to construct a variety of morphologies. The self-assembly morphology of the PUII was observed by scanning electron microscopy (SEM). The PUII films with different amounts (0.2%, 0.4%, 0.6%, 0.8%, 1.0%) of 1,3,5-Tris(2-hydroxyethyl)hexahydro-1,3,5-triazine (TNO) were challenged with , , and . The results showed that when a small amount of antibacterial agent were added, the antibacterial effect of films on Botrytis cinerea was more obvious. The mechanical evaluation shows that the antimicrobial polyurethane films exhibit good mechanical properties.
基于异佛尔酮二异氰酸酯的新型物理交联聚氨酯（PUII）采用传统两步法制备。通过傅里叶变换红外光谱（FTIR）、质子核磁共振（H NMR）、凝胶渗透色谱（GPC）、扫描电子显微镜（SEM）和差示扫描量热法（DSC）对PUII的化学结构进行了表征。将PUII水凝胶在四氢呋喃+水中进行溶剂诱导自组装，以构建多种形态。通过扫描电子显微镜（SEM）观察PUII的自组装形态。对含有不同量（0.2%、0.4%、0.6%、0.8%、1.0%）的1,3,5-三（2-羟乙基）六氢-1,3,5-三嗪（TNO）的PUII薄膜进行了、、和的测试。结果表明，当添加少量抗菌剂时，薄膜对灰霉病菌的抗菌效果更明显。力学评估表明，抗菌聚氨酯薄膜具有良好的力学性能。
