关键词: 棕榈叶, 生物酶, 改性, 草酸铵, 柔软度

Abstract: In order to improve the softness and refinement of palm fiber, ammonium oxalate and complex enzyme combined treatment process was studied. This paper discussed the single factor impact of ammonium oxalate mass concentration, temperature, and time. Then, L₁₆(4⁵)orthogonal test was performed on laccase mass concentration, acidic xylan mass concentration, time, temperature, and pH value, and the performance was compared. The results indicated that the optimal process could be obtained under the following condition: mass concentration of ammonium oxalate was 5.5 g/L, the treatment temperature was 100 ℃, the treatment time was 70 m, the mass concentration of laccase was 3.0 g/L, the acid xylanase was 5.5 g/L, the treatment time was 70 m, the treatment temperature was 50 ℃, pH 5.0; the breaking strength of palm fiber reached 7.7 cN/dtex, the linear density was 0.6 tex, and the softness was 296 twist/20 cm. Compared with unprocessed palm fiber, the breaking strength was reduced by 45.8%, the linear density was reduced by 57.7%, and the softness was increased by 48.7%. The process improved the properties of palm fiber, and provided a reference for subsequent product development.

Key words: palm fiber, enzyme, modified, ammonium oxalate, softness