Stepwise modification with 2,3-epoxypropyltrimethylammonium chloride cationization and rosin acid impregnation to improve water repellency and mold-proof property of bamboo

Enhancing Crack and Mold Resistance of Bamboo by In Situ Construction of Shape Memory Epoxy/Poly(furfuryl alcohol) Bioresin

“…14−18 Currently, Chen et al modified bamboo with 2,3epoxypropyl trimethylammonium chloride cationization and rosin acid impregnation, where the water repellency and moldproof properties of bamboo were improved. 19 As reported by Yang et al, the dimensional stability and hydrophobicity of round bamboo were improved by impregnating the epoxymodified rosin. 20 It was found that the epoxy-modified rosin not only occupied the cell lumens but also filled the nanopores of the cell walls and intercellular spaces of bamboo.…”

“…Treatment with low molecular weight monomers or precursors, such as methyl methacrylate (MMA), phenolic resin, urea formaldehyde resin, 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU), and epoxy resin (EP), which can easily polymerize or cure inside or on the surface of bamboo, has been proved as highly efficient and simple ways to enhance the multifaceted properties of bamboo. − Wood or bamboo modified with unsaturated monomers or formaldehyde-based thermosetting resins exhibit enhanced strength, dimensional stability, and resistance against microorganisms compared with untreated ones. , However, the volatilization of unreacted monomer or formaldehyde during use threatens the environment and human health. As one of the most versatile thermosetting resins, the EP possessing typical advantages of easy processing, excellent adhesion, good dimensional, thermal stability, and shape memory performance has already been widely utilized as adhesives, coatings, and matrices in various fields. − Currently, Chen et al modified bamboo with 2,3-epoxypropyl trimethylammonium chloride cationization and rosin acid impregnation, where the water repellency and mold-proof properties of bamboo were improved . As reported by Yang et al, the dimensional stability and hydrophobicity of round bamboo were improved by impregnating the epoxy-modified rosin .…”

VAR Fabric Modification: Inducing Antibacterial Properties, Altering Wettability/Water Repellence, and Understanding Reactivity at the Molecular Level

“…For example, surface functionalization of graphene oxide (GO) using alkylamines of varying chain lengths results in the formation of superhydrophobic surfaces, with the higher chain lengths performing better. , Long-carbon-chain amines are also known to induce antibacterial properties, when used in the form of their quaternary ammonium salts . Likewise, 2,3-epoxypropyltrimethylammonium chloride (EPTAC) is known for its applications in the material science field, e.g., toward achieving “surface cationization”, a chemical treatment that increases the materials’ affinity with anionic dyes, improves their water repellency, and more. Along these lines, we recently published two protocols for the anchoring of 3-allyl-5,5-dimethylhydantoin (ADMH), 3-(acrylamidopropyl)­trimethylammonium chloride (APTAC), and 2,4-dihydroxybenzophenone on different types of fabrics, thus improving their water repellency, antibacterial properties, and UV protection. , …”

Antimildew Effect of Three Phenolic Compounds and the Efficacy of Antimildew Sliced Bamboo Veneer

“…At present, approximately 10% of the total annual bamboo production worldwide is discarded due to mildew, limiting its application scope and causing significant resource waste and economic loss. Although traditional chemical mildew inhibitors are effective [ 7 , 8 , 9 ], their high toxicity and residual levels pose fatal risks to the environment and humans. Therefore, the search for high-efficiency, green, and eco-friendly mildew inhibitors is of utmost importance for the future application of bamboo materials.…”