For a better understanding of the properties of bamboo lignin and of its delignification mechanism in pulping processes, milled bamboo lignin (MBL) from sinocalamus affinis was isolated and characterized by using 1H-NMR-, UV- and IR-spectroscopy, nitrobenzene oxidation and elemental analysis. It is shown that the bamboo (Sinocalamus affinis) lignin is a GSH-type lignin. Arabinose, fucose and xylose were found in bamboo lignin and a very close assciation between lignin and polysaccharides is suggested.

As the result of the studies on akaline hydrogen peroxide (PA) pulping of wheat straw, the appropriate cooking conditions have been acquired. The comparison of PA, KP and SAQ cooking shows that PA cooking is quite good for chemical pulping of wheat straw. Furthermore, The PA cooking on defiberation point, mechanism of reaction as well as the variation of main components of wheat straw has been researched. In addition, bleaching of PA pulp and the properties of bleached pulp have been studied.

利用制浆造纸工程国家重点实验室的Andritz sprout-Bauer的CTMP中试装置，以新的工艺路线，用压力磨浆机进行红麻全秆碱性过氧化氢加压热磨化机浆的中试，获得质量优良的化机浆。通过漂前助剂处理，解决了红麻全秆碱性过氧化氢化机浆漂白难的问题，一段过氧化氢漂白将红麻全秆化机浆漂白至76%（SED）白度，浆张裂断长5.6km，不透明度80%。

分别利用酸性过氧化氢、亚硝酸钠、氯气、活化剂AO以及卡诺酸在马尾松KP浆氧脱木素前进行活化预处理，以期改善氧脱木素的选择性。结果表明，在所采用的活化预处理试剂中，以氯气和活化剂AO的处理效果最为显著。

对麦草碱木素进行了纯化，并采用膜分离技术对纯化木素进行分级分离。以化学法和光谱法研究其特性，提出了功能基随级分木素分子量变化的关系。