Controlling the relationship between the structure and the properties of multiphase polymeric materials has been one of the most important achievements in polymer science so far. In micro- and nanostructures of multiphase polymeric material research, some methods enable ordering and phase arrangement, which guarantees keeping the interesting functional properties of the material.

These methods help control the interface phenomena by lowering the interfacial tension. By doing this, it improves the dispersion of minority components into the renewable polymer matrix. It also increases the compatibility between components and so the achieving of the desired functional properties. These methods create entangled surfaces, the interpenetration of the interfaces, the formation of physical and / or chemical links between phases and renewable polymeric matrices, the controlling of the rheological properties of the compound melts, etc. However, there can be some morphological defects, generally found in spaces with air and between the filler and the matrix (e.g., micro-gaps, gaps, etc.). It is dangerous because under stress, it accelerates the mechanical destruction by cracking and breaking.

The aim of this Special Issue is to bring together original research and review articles discussing the significance of the nanomorphological order to create new polymeric material based on renewable polymers. This Special Issue will include the original results related to nanometric ordering methods of minority components of the renewable polymeric matrix. Submissions can consider melt processing techniques such as three-dimensional (3D) printing for morphological uniformity, anisotropy of properties, and surface appearance.

Potential topics include but are not limited to the following:

• Controlling the interface phenomena by lowering the interfacial tension in multiphase polymeric materials based on renewable polymers
• The lowering of interfacial tension by creating entangled surfaces and interpenetration of the interfaces
• Formation of physical and chemical links between phases and renewable polymeric matrices
• Controlling the melt rheological properties (i.e., nano-structuring under stress)
• The dependence between the structuring level and the morphological quality of new items based on new nanostructure of multiphase materials with renewable polymers