The effect of two types of nanocellulose on the mechanical properties of chitosan (CH) film was examined in terms of elongation, tensile strength, and dynamic-mechanical properties such as tan δ and storage modulus. Chitosan films were reinforced by cellulose nanocrystal (CNC) and cellulose nanofiber (CNF) with different ratios. CH/CNC and CH/CNF nanocomposite films containing 0–7 wt.% nanofibers were produced by solution casting. A comparison between CNC and CNF was made based on their nanostructures and interfacial bonding with the CH matrix. For both CNC and CNF, reinforcing effects in nanocomposite polymer films were presented. The results demonstrated that nanocomposite films can increase mechanical properties; 7 wt.% CNF and CNC had the most increasing effect on the mechanical properties, raising the tensile strength of the chitosan film by 104% and 52%, respectively. Moreover, the values of CH/CNC and CH/CNF films showed higher storage modulus compared to the pure chitosan film. CNF shows higher modulus and strength compared with CNC at the same amount of fiber because of CNFs’ percolation networks and their larger aspect ratio. Morphological studies revealed the dispersion of CNC and CNF is in the contiguous matrix of chitosan with a homogeneous distribution without agglomeration. The results also illustrated that CNC and CNF can improve the water resistance of chitosan films. The mechanical properties of composite films were acceptable to use as artificial skin and wound dressings.

（CH）膜的伸长率方面，拉伸强度，和诸如动态黄褐色-机械性能检测两种类型的脱乙酰壳多糖上的机械性质的纳米纤维素的效果δ和储能模量。壳聚糖膜由不同比例的纤维素纳米晶体（CNC）和纤维素纳米纤维（CNF）增强。通过溶液流延制得的CH / CNC和CH / CNF纳米复合膜包含0–7 wt。％的纳米纤维。基于CNC和CNF的纳米结构以及与CH基体的界面键合，进行了比较。对于CNC和CNF，都提出了在纳米复合聚合物薄膜中的增强作用。结果表明，纳米复合膜可以提高机械性能。7重量％的CNF和CNC对机械性能的影响最大，使壳聚糖膜的抗张强度分别提高了104％和52％。此外，与纯壳聚糖膜相比，CH / CNC和CH / CNF膜的值显示出更高的储能模量。与CNF相比，在相同数量的纤维下，CNF显示出更高的模量和强度，这是因为CNF的渗透网络和更大的长宽比。形态学研究表明，CNC和CNF分散在壳聚糖的连续基质中，具有均匀的分布而没有团聚。结果还表明，CNC和CNF可以改善壳聚糖膜的耐水性。复合膜的机械性能可以用作人造皮肤和伤口敷料。结果还表明，CNC和CNF可以改善壳聚糖膜的耐水性。复合膜的机械性能可以用作人造皮肤和伤口敷料。结果还表明，CNC和CNF可以改善壳聚糖膜的耐水性。复合膜的机械性能可以用作人造皮肤和伤口敷料。