彩色胶印新闻纸酶—超声波协同脱墨的研究

进行了酶与超声波协同作用对彩色胶版印刷新闻纸脱墨的研究.实验结果表明,超声波协同酶预处理对彩色胶印新闻纸的脱墨效率有很大的提高,处理后浆的白度比空白试样提高5%ISO.虽然酶和超声波的处理会在一定程度上降低纤维粗度和纤维长度,但对纸张的强度影响很小.研究发现,超声波的主要作用是提高了酶对纤维表面碳水化合物的水解速度,因而有利于油墨的脱除.

Study on the Deinking of Colored Offset Newsprint with Enzyme-Uitrasonic Synergistic

A new process for deinking of colored offset newsprint with enzyme treatment in cooperation with ultrasonic wave was studied in this paper.It was found that colored offset newsprint could be deinked effectively by cellulase_ultrasonic wave synergistic treatment.The brightness increased by 5%ISO over that of control sample.Though the treatment of enzyme combined with ultrasonic wave reduced the coarseness and fiber length to some extent,there was little effect on the strength of pulp.Ultrasonic treatment could accelerate the hydrolysis of cellulose and hemicellulose of surface fibers,thus facilitating the removal of ink from fibers.