It’s hard to bleach the pulp from cotton stalk due to the high content of pectin in its husk.

针对棉秆皮部果胶质含量高,全棉秆浆可漂性差的特点,分别考察了NaOH和Na2C2O4对棉秆原料的脱果胶效果,并将BCTMP工艺的原料预处理方法由汽蒸或热水浸泡改为添加脱果胶试剂的预处理过程,有效减轻了皮部果胶组分对成浆可漂性的不良影响,在温度90℃、草酸钠用量1。