麦草浆臭氧漂白中戊聚糖含量的变化

Pentosan Content Change Rule of Wheat Straw Pulp during Ozone Bleaching

本文为了探索未漂麦草浆在臭氧漂白过程中戊聚糖的变化规律,研究了不同臭氧用量、pH值、温度等的变化对浆料中戊聚糖含量的影响。结果表明:在臭氧含量低于3%及相对较低的温度下时戊聚糖溶出比较多,纤维素的降解较少;在臭氧漂白过程中,戊聚糖含量较高及戊聚糖溶出,对纤维素能起到一定的保护作用。

During ozone bleaching,hemicellulose content change rule of wheat s tr aw pulp has been studied in this paper.The result indicated that when ozone char ge lower then 3%and the temperature lower then 20℃,the hemicellulose were diss olved from unbleached wheat straw pulp. Easy dissolved hemicellulose was propiti ous to protect cellulose of unbleached wheat straw pulp.