Department of Fibres and Textile Processing Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India; The Bombay Textile Research Association, LBS Marg, Ghatkopar (W), Mumbai 400 086, India.
Department of Fibres and Textile Processing Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India.
Int J Biol Macromol. 2024 Jun;270(Pt 1):132221. doi: 10.1016/j.ijbiomac.2024.132221. Epub 2024 May 8.
Cellulose acetate (CA) is a non-toxic, renewable, and biodegradable polymeric material that can be effectively electrospuned into bacterial filtration efficient nanofiber membrane for face mask application. However, its fragile and non-antibacterial nature influenced its scalability. In this context, natural antibacterial gum rosin (GR) additive can be explored. Therefore, the present study aimed to produce a CA/GR composite nanofibers membrane for the finest bacterial filtration, excellent antibacterial moiety, and improved tensile properties for facemask application. Hence, in this work, we have studied the effect of GR concentrations (0-15 g) on the needleless electrospinning behavior and fibers' morphology through rheology, electrical conductivity, and SEM analysis. These analyses revealed that GR significantly affects the fibers' spinning behavior, morphology, and diameter of the produced fibers. Later, ATR-FTIR spectroscopy mapped the functional changes in the produced nanofibers that affirmed the integration of GR with CA polymer. This modification resulted in a 3-fold rise in tensile strength and an 11-fold decline in elongation% in 15 g CA/GR composite nanofibers membrane than the control sample. Furthermore, it has shown 98.79 ± 0.10% bacterial filtration efficiency and ∼ 93 % reduction in Staphylococcus Aureus and Klebsiella Pneumoniae bacterial growth, elucidating a high-efficiency level for potential facemask application.
醋酸纤维素（CA）是一种无毒、可再生和可生物降解的聚合物材料，可有效地电纺成细菌过滤效率高的纳米纤维膜，用于口罩应用。然而，其脆弱和非抗菌的性质影响了它的可扩展性。在这种情况下，可以探索天然抗菌树胶松香（GR）添加剂。因此，本研究旨在生产 CA/GR 复合纳米纤维膜，以实现最佳的细菌过滤效果、优异的抗菌部分和改善的拉伸性能，用于口罩应用。因此，在这项工作中，我们研究了 GR 浓度（0-15 g）对无针电纺行为和纤维形态的影响，通过流变学、电导率和 SEM 分析进行研究。这些分析表明，GR 显著影响纤维的纺丝行为、形态和所生产纤维的直径。后来，ATR-FTIR 光谱图描绘了所生产的纳米纤维的功能变化，证实了 GR 与 CA 聚合物的结合。与对照样品相比，这种改性使 15 g CA/GR 复合纳米纤维膜的拉伸强度提高了 3 倍，伸长率%降低了 11 倍。此外，它显示出 98.79 ± 0.10%的细菌过滤效率和对金黄色葡萄球菌和肺炎克雷伯菌的生长减少了约 93%，表明具有潜在口罩应用的高效水平。
