Towards high performance wood composites through interface customization with cellulose-based adhesive

Int J Biol Macromol. 2024 Apr;265(Pt 2):131053. doi: 10.1016/j.ijbiomac.2024.131053. Epub 2024 Mar 22.

Abstract

How to efficiently produce high performance plywood is of particular interest, while its sensitivity to moisture is overcome. This paper presents a simple and scalable strategy for the preparation of high-performance plywood based on the chemical bonding theory; a wood interfacial functionalized platform (WIFP) based on (3-aminopropyl) triethoxysilane (APTES) was established. Interestingly, the APTES-enhanced dialdehyde cellulose-based adhesive (DAC-APTES) was able to effectively establish chemically active adhesive interfaces; the dry/wet shear strength of WIFP/DAC-APTES adhesive was 3.15/1.31 MPa, which was much higher than 0.7 MPa (GB/T 9846-2015). The prepared plywood showed excellent wood-polymer interface adhesion, which exceeded the force that the wood itself could withstand. In addition, the DAC-APTES adhesive exhibits moisture evaporation-induced curing behavior at room temperature and can easily support the weight of an adult weighing 65.7 Kg. This research provides a novel approach for functionalized interface design of wood products, an effective means to prepare high-performance plywood.

Keywords: Cellulose-based adhesive; Chemical bonding theory; Wood interface functionalization platforms.

MeSH terms

  • Adult
  • Cellulose*
  • Humans
  • Polymers
  • Propylamines
  • Silanes*
  • Wood*

Substances

  • Cellulose
  • Polymers
  • amino-propyl-triethoxysilane
  • Propylamines
  • Silanes