Recently, naturally derived cellulose nanofibers (CNFs) has absorbed abundant of attention due to its renewable, biodegradable, and remarkable performances with high strength, high surface area, and tunable surface chemistry, which permits its interaction with other polymers and nanomaterials in a controlled manner. Hence, the CNFs were employed as the shell nanomaterials to coat the core energetic crystals via a facile water suspension and ultrasonic technology, including (1,3,5-trinitro-1,3,5-triazinane)RDX@CNFs, (1,3,5,7-tetranitro-1,3,5,7-tetrazocane)HMX@CNFs, and (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane)CL-20@CNFs. The results demonstrated that CNFs were distributed uniformly and coated on the surface of explosives, stabilizing the polymorphs (e.g., β-HMX and ε-CL-20) and influencing the thermal properties of energetics remarkably (e.g., ε-CL-20: 161.5 °C to γ-CL-20: 188.9 °C). Besides, the sensitivity of composites reduced significantly approximately 2 times comparing with pure explosives and mechanical-physical mixed samples, attributing to the buffering function and favorable flexibility of CNFs. Finally, the proposed schematic mechanism for core-shell structure of the composites was also illustrated.

近年来，天然衍生的纤维素纳米纤维（CNFs）因其可再生、可生物降解、高强度、高表面积和可调表面化学等卓越性能而受到广泛关注，使其与其他聚合物和纳米材料以可控的方式相互作用。 . 因此，CNFs 被用作壳纳米材料，通过简便的水悬浮和超声波技术包覆核心含能晶体，包括 (1,3,5-trinitro-1,3,5-triazinane)RDX@CNFs，（1， 3,5,7-tetranitro-1,3,5,7-tetrazocane)HMX@CNFs, 和 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-六氮杂异武兹烷)CL-20@CNFs。结果表明，CNFs 分布均匀并包覆在炸药表面，稳定了多晶型物（例如，例如，ε-CL-20：161.5°C 至 γ-CL-20：188.9°C）。此外，与纯炸药和机械物理混合样品相比，复合材料的敏感性显着降低约2倍，这归因于CNF的缓冲功能和良好的柔韧性。最后，还说明了所提出的复合材料核壳结构的示意图机制。