高性能木聚糖酶助漂硫酸盐针叶木浆的研究OA
High-Performance Xylanase-Assisted Bleaching of Kraft Coniferous Pulp
研究耐酸 XYS 酶和耐碱及耐高温 VYBRANT 701 酶两种商品木聚糖酶在 O(X1D0)EPD1和 OD0(X2EP)D1漂序中的助漂效果.结果表明,XYS酶助漂二氧化氯漂段、VYBRANT 701酶助漂碱抽提漂段,硫酸盐针叶木浆漂后 ISO白度可达 86.5%,O(X1D0)EPD1 漂后浆所得纸页的抗张指数和耐破指数分别提高了 10.4%、10.9%;扫描电子显微镜和纤维分析仪检测发现,助漂后的纤维表面出现破损、剥皮、细小纤维增多、纤维卷曲度增大等现象,表明纤维表面的木聚糖被降解,使纤维细胞壁的结构更松散、孔隙增大,有助于后续漂液的渗透以及木素的脱除.
The bleaching-assisting effects of acidotolerant resistance xylanases XYS and alkaline resistance and thermo-stable resistant xylanase VYBRANT 701 in the O(X1D0)EPD1 and OD0(X2EP)D1 drift sequences were studied in the current research.The results showed that the whiteness of kraft coniferous pulp after bleaching reached 86.5%ISO in the bleaching stage of XYS enzyme-assisted chlorine dioxide bleaching section and VYBRANT 701 enzyme-assisted bleaching alkali ex-traction bleaching section,and the tensile index and bursting index of the paper sheets obtained from O(X1D0)EPD1 bleached pulp increased by 10.4%and 10.9%,respectively.Scanning electron microscope and fiber analyzer showed that the bleached fiber surface exhibited surface damage and peeling,an increase in fine fibers,and higher degree of fiber curl.These observa-tions indicated that the xylan on the fiber surface was degraded,making the structure of the fiber cell wall looser and the pores larger,which was conducive to the subsequent penetration of the bleaching solution and the removal of lignin.
曲钰;惠岚峰;郭雯雯;刘忠;宋飞飞;王清硕
天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津 300457天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津 300457天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津 300457天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津 300457天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津 300457天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津 300457
轻工纺织
木聚糖酶生物漂白无元素氯漂白硫酸盐浆
xylanasebio-bleachingelemental chlorine free bleachingkraft pulp
《天津科技大学学报》 2026 (2)
48-53,6
国家重点研发计划资助项目(2022YFC2105503)
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