There is a sizeable amount of sawdust produced from wood industries such as timber and furniture. In the past, sawdust has been utilized as a fuel source and in the manufacturing of furniture. Based on the limited use of sawdust, there is plenty of sawdust accessible from the industries. Sawdust is the material of choice due to its cost effectiveness, environmental friendliness, and biodegradability. However, if sawdust is not appropriately disposed or utilized better, it may have negative impact on the aquatic life and organic products. Hence, this review paper discusses the best possible methods or proper routes for the utilization of sawdust to benefit the environment, society, and the economy at large. Sawdust possesses superior capabilities as a reinforcing filler in various polymer matrices for advanced applications. This paper provides an in-depth discussion on sawdust hybrid composites in comparison to other natural fibres hybrid composites. The applications of various sawdust hybrid polymer composites for specific systems are also mentioned. Furthermore, the morphology and preparation of the sawdust/polymer composites and/or sawdust hybrid polymers composites are also discussed since it is well known that the properties of the natural fibre composites are affected by the preparation method and the resultant morphology. Based on the above, the current paper also plays a critical role in providing more information about waste to value added products.

Owing to their unique and compelling characteristics, PCL and chitosan are emerging as highly promising materials for future medical applications. Herein, the advancements in utilization of PCL/chitosan blend composites and nanocomposite scaffolds prepared through electrospinning and additive manufacturing techniques in medical applications were briefly discussed. Electrospinning and additive manufacturing technologies are receiving enormous attention in developing scaffolds with unique and most desired features including porosity, which is necessary for effective cell attachment and proliferation, nutrient exchange, among others. Electrospun fiber/3D-printed PCL/chitosan hybrid scaffolds are also of particular interest due to their intriguing properties resulting from both fiber mats and 3D-printed structures. In this review, the preparation and property characterization (morphology, mechanical, and biological) are discussed. The influences of various additives such as nanoparticles and bioactive compounds on the resulting properties of the electrospun and 3D-printed PCL/chitosan scaffolds are also discussed.