Polymers from renewable resources are receiving tremendous attention due to the increasing concerns about the depletion of fossil oils and the destruction of the environment. On one side, natural polymers including cellulose, hemicellulose, lignin, chitosan, starch, protein, and natural rubber have been widely used to manufacture novel polymeric materials. On the other, monomers from renewable biomass, including vegetable oils, fatty acids, rosin acids, furfural, turpentine, and lactic acid, are molecularly engineered into green polymers. There is a growth of interest into fundamental and applied research on applying renewable polymer materials as a constituent or constituents, either as a reinforcement or a matrix component or both, in order to develop novel composites and nanocomposites with advanced performance and smart functionalities. This special issue presents a focused collection of leading original research and reviews in polymer science related to the design, processing, modification, functionalization, and application of renewable polymer materials, especially those for use in engineering applications.

Potential topics include but are not limited to the following:

• Polymer synthesis, structural design and novel processing of renewable polymer materials for use in engineering applications
• Biopolymer materials and biobased materials with improved properties and superior performance
• Renewable polymer modification for enhanced interfacial, flame retardant, degradation, and plasticizing properties, especially for engineering and construction applications
• Novel concepts in renewable polymer composites and nanocomposites with advanced, multi-, and smart functionalities, in particular those for use in smart home applications
• Processing and application of renewable polymer nanocomposites
• Polymer science in 3D printing and novel assembly of renewable polymer materials
• Biomimetic renewable polymer materials processing and applications, especially those for use in construction