Kapok fiber is a natural hollow fiber that has superior biocompatibility and biodegradability and is naturally antibacterial. Because of its unique properties, it has great potential in the application of postoperative repair dressings. The wettability and micro-equilibrium of kapok fibers play a critical role in dressing applications. In this study, the critical adhesion volume and adhesion energy of essence liquid to alkali-treated kapok fiber (AKF) were quantitatively calculated to explore the wettability and micro-equilibrium through the equilibrium wetting theory. Meanwhile, the three-phase contact line (TCL) structure was described. The results showed that the critical adhesion volumes of the three types of essence liquid for AKF were 3.45, 3.81, and 4.12 μL, respectively. Moreover, the critical volumes and low error rates derived from the equilibrium wetting theory were 3.41 μL and 1.16%, 3.99 μL and 4.51%, and 4.60 μL and 10.43%, respectively. Therefore, the critical volume of adhesion could be well calculated by the theoretical model. The average adhesive energies of essence liquid to the AKF were 0.38, 0.45, and 0.56 J, respectively, caused by the difference in liquids properties. The TCL showed a mechanical lock and bonding points at both ends because of the curvature difference and higher surface energy. These results are proposed to inspire the design of a liquid carrier of kapok fibers based on the fiber network structure.

木棉纤维是一种天然中空纤维，具有优越的生物相容性和生物降解性，天然抗菌。由于其独特的性能，它在术后修复敷料的应用中具有很大的潜力。木棉纤维的润湿性和微平衡在敷料应用中起着至关重要的作用。本研究通过平衡润湿理论，定量计算了香精液对碱处理木棉纤维（AKF）的临界粘附体积和粘附能，以探索其润湿性和微平衡。同时，描述了三相接触线（TCL）结构。结果表明，三种精华液对AKF的临界粘附体积分别为3.45、3.81和4.12 μL。而且，平衡润湿理论得出的临界体积和低错误率分别为 3.41 μL 和 1.16%、3.99 μL 和 4.51% 以及 4.60 μL 和 10.43%。因此，通过理论模型可以很好地计算粘附的临界体积。由于液体性质的不同，香精液对AKF的平均粘附能分别为0.38、0.45和0.56 J。由于曲率差异和更高的表面能，TCL 在两端显示出机械锁定和键合点。这些结果旨在启发基于纤维网络结构的木棉纤维液体载体的设计。由于液体性质的不同，香精液对AKF的平均粘附能分别为0.38、0.45和0.56 J。由于曲率差异和更高的表面能，TCL 在两端显示出机械锁定和键合点。这些结果旨在启发基于纤维网络结构的木棉纤维液体载体的设计。由于液体性质的不同，香精液对AKF的平均粘附能分别为0.38、0.45和0.56 J。由于曲率差异和更高的表面能，TCL 在两端显示出机械锁定和键合点。这些结果旨在启发基于纤维网络结构的木棉纤维液体载体的设计。