作　　者： ; ; ; ;

机构地区： 天津科技大学材料科学与化学工程学院

出　　处： 《天津科技大学学报》 2010年第6期33-38,共6页

摘　　要： 采用漆酶处理国产旧瓦楞纸箱(LOCC)原料增加纸浆强度,对漆酶处理国产OCC纸浆最佳工艺条件进行优化.在最优条件下,采用扫描电镜(SEM)分析了漆酶处理前后成纸纤维表面的形态差异,并利用纤维形态分析仪(Fiber-Tester)分析了漆酶处理前后浆料中纤维形态学参数的变化.研究结果表明漆酶处理国产OCC纸浆最佳工艺条件为:酶用量24 U/g(相对于绝干浆),pH 6.0,温度45,℃,浆浓3%,通空气条件下反应2,h.漆酶在最优条件下处理国产OCC纸浆时,干抗张指数提高11.5%,湿抗张指数提高12.2%,干环压指数提高7.5%,湿环压指数提高幅度最大为20.6%;漆酶/白水体系在最优条件下处理国产OCC纸浆时,干抗张指数提高10.0%,湿抗张指数提高27.0%,干环压指数提高10.5%,湿环压指数提高幅度最大为24.9%.经过漆酶处理后的纤维表面呈现凹凸不平的现象,纤维形态学参数无明显变化;而经过漆酶/白水体系处理后的纤维间产生更多的连接膜,纤维的粗度由空白试样的136.7 mg/m提高至140.6 mg/m. The local OCC（LOCC）pulp treated with laccase for increasing pulp strength has been studied,and the conditions of pulp with laccase treated was optimized.SEM and Fiber-Tester was used to analysis the different of fiber’s surface change and morphological parameters between pulp treated with or without laccase.The best optimized condition of laccase treatment is laccase dosage 24,U/g,consistency 3%,pH 6.0,temperature 45 ℃,reactive time 2,h,air condition.Increased intension of LOCC pulp treated with laccase are dry tensile index 11.5%,wet tensile index 12.2%,dry ring crush index 7.5% and wet ring crush index 20.6%.Increased intension of LOCC pulp treated with laccase/white water system are dry tensile index 10.0%,wet tensile index 27.0%,dry ring crush index 10.5% and wet ring crush index 24.9%.After treatment with laccase,the surface of fiber turned to be rough.However,LOCC pulp treated with laccase and white water,not only occurred adhesion phenomenon between fibers,but also coarseness of fibers increased from 136.7 mg/m to 140.6 mg/m,compared with control sample.

关 键 词： 漆酶 漆酶 白水体系 国产 成纸强度

领　　域： [轻工技术与工程]