Ultra-strong and Environmentally Friendly Waste Polyvinyl Chloride/paper Biocomposites

Developing new biocomposites from waste paper and plastics could help meet global sustainability goals while addressing environmental issues. In this paper, the polyvinyl chloride (PVC) powder and paper floc were mixed in different proportions and subjected to dry hot molding (180 ℃, 73.8 MPa, 1 h) to prepare waste PVC/paper biocomposites with excellent performance. From the scanning electron microscope (SEM) images of the PVC/paper biocomposite, it can be seen that the PVC powder filled the gaps between multiple paper floc. The combination between PVC powder and paper floc is the tightest in PVC/paper (NaOH) 3:7. Therefore, the comprehensive mechanical properties of PVC/paper (NaOH) 3:7 are the best (The tensile strength is as high as 183.98 MPa, and the flexural strength has also reached a satisfactory 66.60 MPa). In addition, the water absorption of PVC/paper biocomposites generally showed a decreasing trend as the proportion of PVC powder in the composite increased. When the ratio of PVC powder and 3