Peng Rui, Du Chungui, Hu Ailian, Li Qi, Zhang Jingjing, Zhang Weigang, Sun Fangli
College of Chemistry and Materials Engineering, Zhejiang A & F University Hangzhou 311300 Zhejiang China
RSC Adv. 2021 Nov 17;11(58):36884-36894. doi: 10.1039/d1ra06352a. eCollection 2021 Nov 10.
Bamboo is a widely used renewable and degradable biomass material; however, its sustainable utilisation is hindered by its susceptibility to mold. The current bamboo anti-mold technology is mainly based on organic chemical agents; these agents can easily induce mold resistance in bamboo with long-term use, and can even adversely affect human health. In the present study, the poly(-isopropyl acrylamide) (PNIPAm)/citral nanohydrogel was prepared by encapsulating the natural antibiotic citral in PNIPAm for the anti-mold treatment of bamboo. The results revealed that this nanohydrogel exhibited a core-shell system with citral as the 'core' and PNIPAm as the 'shell', an average hydrodynamic diameter of 88.1 nm, and a low critical solution temperature (LCST) of 35.4 °C. After the high-pressure impregnation with the nanohydrogel, the bamboo strips showed excellent control effects toward common bamboo molds. Therefore, the nanohydrogel demonstrated high efficiency and it may become an ideal alternative to organic chemical anti-mold agents, thus showcasing its significant potential in the field of mold prevention for bamboo.
竹子是一种广泛使用的可再生且可降解的生物质材料；然而，其易受霉菌影响阻碍了它的可持续利用。当前的竹子防霉技术主要基于有机化学试剂；长期使用这些试剂容易使竹子产生抗药性，甚至会对人体健康产生不利影响。在本研究中，通过将天然抗生素柠檬醛包裹在聚（N-异丙基丙烯酰胺）（PNIPAm）中制备了PNIPAm/柠檬醛纳米水凝胶，用于竹子的防霉处理。结果表明，这种纳米水凝胶呈现出以柠檬醛为“核”、PNIPAm为“壳”的核壳体系，平均流体动力学直径为88.1 nm，低临界溶液温度（LCST）为35.4℃。用纳米水凝胶进行高压浸渍后，竹条对常见的竹子霉菌显示出优异的防治效果。因此，该纳米水凝胶显示出高效性，它可能成为有机化学防霉剂的理想替代品，从而在竹子防霉领域展现出巨大潜力。
