Development of an eco-friendly hybrid lacquer based on kurome lacquer sap

Effects of polysaccharides on the properties of Chinese lacquer sap

“…to the formation of urushiol quinones, aromatic ethers and the coupling of phenyl rings. The peak at 983.2 cm −1 was due to nonconjugated dienes, and the 993 cm −1 peak was due to conjugated trienes [28,29]. The former gradually decreased and the latter gradually increased, indicating some reactions had occurred in the side chain in the natural drying process.…”

“…However, although the polysaccharide is an important component in the lacquer sap, the role of polysaccharide in the drying process of lacquer sap is yet unclear. In addition, some chemical substances such as organic silicone, urethane and thitsiol have been added into the lacquer sap, and their effects on the properties of lacquer sap have been studied [15][16][17][18][19][20]. However, so far, no study has been reported on polysaccharide-modified lacquer sap.…”

Effects of lacquer polysaccharides, glycoproteins and isoenzymes on the activity of free and immobilised laccase from Rhus vernicifera

“…1). All of these components have been separated and purified [1,5] and some of the components have been studied individually, such as the structural analysis of urushiols and laccols [6][7][8][9][10][11]; lacquer polysaccharides [4,[12][13][14]; fast drying lacquer [15][16][17][18][19], and the morphology and components of lacquer film [20][21][22][23], however, their interactions have been scarcely investigated due to their complexity [24]. Some interesting phenomena have been observed, for example lacquer polysaccharides in the surface of the lacquer film act as a barrier layer against oxygen diffusion [25].…”

Catechol‐Based Biomimetic Functional Materials and their Applications

“…Typically, the sap is applied to the surface as a varnish, under controlled temperature and relative humidity conditions; once dry, the lacquer layer is carefully polished prior to application of the next coating layerup to 30-40 layers are required for a quality lacquer coating [90]. Miyakoshi et al reported that the addition of amino-terminated silanes to urushiol yielded a fast curing urushiol-silane hybrid [93]. Miyakoshi et al reported that the addition of amino-terminated silanes to urushiol yielded a fast curing urushiol-silane hybrid [93].…”