Biocomposites are considered as the next-generation materials as these can be made using natural/green ingredients to offer sustainability, eco-efficiency, and green chemistry. Nowadays, biocomposites are being utilized by numerous sectors, which include automobile, biomedical, energy, toys, sports, and so on. In this review article, an effort has been made to provide a comprehensive assessment of the available green composites and their commonly used processing technologies for the sake of materials’ capabilities to meet up with demands of the present and forthcoming future. Various types of natural fibers have been investigated with polymer matrixes for the production of composite materials that are at par with the synthetic fiber composite. This review article also highlights the requirements of the green composites in various applications with a view point of variability of fibers available and their processing techniques. This review is specially done to strengthen the knowledge bank of the young researchers working in this field.

The United Nations (UN) 2030 agenda on sustainable development goals (SDGs) encourages us to implement sustainable infrastructure and services for confronting challenges such as large energy consumption, solid waste generation, depletion of water resources and emission of greenhouse gases in the construction industry. Therefore, to overcome challenges and establishing sustainable construction, there is a requirement to integrate information technology with innovative manufacturing processes and materials science. Moreover, the wide implementation of three-dimensional printing (3DP) technology in constructing monuments, artistic objects, and residential buildings has gained attention. The integration of the Internet of Things (IoT), cloud manufacturing (CM), and 3DP allows us to digitalize the construction for providing reliable and digitalized features to the users. In this review article, we discuss the opportunities and challenges of implementing the IoT, CM, and 3D printing (3DP) technologies in building constructions for achieving sustainability. The recent convergence research of cloud development and 3D printing (3DP) are being explored in the article by categorizing them into multiple sections including 3D printing resource access technology, 3D printing cloud platform (3D–PCP) service architectures, 3D printing service optimized configuration technology, 3D printing service evaluation technology, and 3D service control and monitoring technology. This paper also examines and analyzes the limitations of existing research and, moreover, the article provides key recommendations such as automation with robotics, predictive analytics in 3DP, eco-friendly 3DP, and 5G technology-based IoT-based CM for future enhancements.

Composite or reinforced materials, especially in the class of polymers, are becoming prominent materials for the diversified range of engineering and scientific utilities because of their physical, chemical, mechanical, and structural excellences. Indeed, the main credit for the widespread acknowledgment of polymer matrix composites (PMCs) goes to the various types of natural and synthetic reinforcements, which resulted in good interfacial chemistries. However, the intrinsic challenges of traditional manufacturing technologies always presented restrictions in the development of application specific PMCs. Reportedly, with an evolution of three-dimensional printing (3DP) technologies, the applications of PMCs have been transformed as these enabled the production of near-net shapes with high degree of control over the design, reinforcements, and processing parametric while maintaining the waste associated at minimal level. However, the industrial benefits of 3DP technologies for still limited owing to the lack of awareness among the young professionals and industrialists. Moreover, the literature available in this regard is either too scattered making it tedious for the professionals to go through or limited to only fundamental concepts. Therefore, the concept of this review paper is to provide brief research-based insights of different 3DP technologies (namely, fused deposition modeling, selective laser sintering, stereolithography, laminated object manufacturing, and inkjet printing), material systems, applications, and the future paradigms of research as a short and precise document.