Thermoforming of polymer from monomers in wood porous structure and characterisation for wood-polymer composite

Inspired by the porous structure of wood, a novel bio‐based composite, wood–polymer composite, was fabricated by thermoforming polymer from monomers [methyl methacrylate (MMA) and styrene (St)] in situ in the wood’s porous structure through a catalyst thermal treatment. SEM observation indicated that polymer was generated in situ and satisfactorily filled up wood pores without noticeable lacunae. FTIR analysis suggested that MMA and St copolymerised in the wood pores, and the resultant polymer was grafted onto the wood matrix through the reaction of ester group of MMA and hydroxyl group on wood components, achieving a chemical complex, which is in agreement with SEM observations. DMA analysis showed that the graft of copolymer of MMA and St onto wood improved the interface interaction between wood matrix and polymer, which rendered both the glass transition temperature and storage modulus at normal temperature of wood–P(MMA‐co‐St) composite evidently increased. The mechanical properties of wood–P(MMA‐co‐S...