Cellulosic paper has combined characteristics of renewability, biodegradability, flexibility, and recyclability. Based on disassembly-initiated fiber processing, the conversion of regular paper into a multifunctional wet-strength product was explored. In this concept, disassembly generates cellulosic additives for surface engineering. Encouragingly, the use of the aqueous solvent system containing mixed metal salts allows controllable fiber disassembly and formation of room-temperature-stable cellulosic solutions, leading to wet and dry strengthening of paper following cellulose regeneration. In-situ generation of cellulosic film-forming additives led to the increase of dry and wet strengths by more than 8 and 35 times respectively, in the case of a typical grade of quantitative filter paper. The engineered paper shows flame-retardant, antibacterial, and liquid-barrier features. The combination of functional properties can shed light on diversified applications, e.g., replacement of difficult-to-degrade synthetic plastics.

纤维素纸兼具可再生性、生物降解性、柔韧性和可回收性等特点。基于分解引发的纤维加工，探索将普通纸转化为多功能湿强产品。在这个概念中，分解产生用于表面工程的纤维素添加剂。令人鼓舞的是，使用含有混合金属盐的水性溶剂体系允许可控的纤维分解和室温稳定的纤维素溶液的形成，从而在纤维素再生后实现纸张的干湿强化。在典型等级的定量滤纸的情况下，纤维素成膜添加剂的原位生成导致干强度和湿强度分别提高了 8 倍和 35 倍以上。工程纸具有阻燃性，抗菌和液体阻隔功能。功能特性的结合可以揭示多样化的应用，例如替代难以降解的合成塑料。