Recent advancements and perspectives on processable natural biopolymers:Cellulose,chitosan,eggshell membrane,and silkfibroin

可加工天然生物质聚合物研究进展与展望:纤维素、壳聚糖、蛋壳膜和丝素蛋白

With the rapid development of the global economy and the continuous consumption of fossil resources,sustainable and biodegradable natural biomass has garnered extensive attention as a promising substitute for synthetic polymers.Due to their hierarchical and nanoscale structures,natural biopolymers exhibit remarkable mechanical properties,along with excellent innate biocompatibility and biodegradability,demonstrating significant potential in various application scenarios.Among these biopolymers,proteins and polysaccharides are the most commonly studied due to their low cost,abundance,and ease of use.However,the direct processing/conversion of proteins and polysaccharides into theirfinal products has been a long-standing challenge due to their natural morphology and compositions.In this review,we emphasize the importance of processing natural biopolymers into high-value-added products through sustainable and cost-effective methods.We begin with the extraction of four types of natural biopolymers:cellulose,chitosan,eggshell membrane,and silkfibroin.The processing and postfunctionalization strategies for these natural biopolymers are then highlighted.Alongside their unique structures,the versatile potential applications of these processable natural biopolymers in biomedical engineering,biosensors,environmental engineering,and energy applications are illustrated.Finally,we provide a summary and future outlook on processable natural biopolymers,underscoring the significance of converting natural biopolymers into valuable biomaterial platforms.