RESEARCH ON FIBER MORPHOLOGY AND PULPING PROPERTIES OF THE TRIPLOID OF PLPULUS TOMENTOSA FROM PLANTATION AT DIFFERENT AGES

INTRODUCTIONThe populus tomentosa laboratory of Beijing ForestryUniversity Chinese led by professor Zhu zhiti hassuccessfully cultivated the triploid of populustomentosa which is a fast growing cellulose materialbearing international leading level. The triploid ofpopulus tomentosa has got a popularization in northChina for its excellent features of fast growing,anti-disease and highly active. We have carriedthrough the detailed research on its biology structure, lignin distribution in c…

RESEARCH ON FIBER MORPHOLOGY AND PULPING PROPERTIES OF THE TRIPLOID OF PLPULUS TOMENTOSA FROM PLANTATION AT DIFFERENT AGES

The fiber morphology and pulping properties of triploid of populus tomentosa from plantation at different ages were investigated in the paper,also the main chemical compositions were determined. The results showed that the difference of chemical compositions is not significant, and the extractive contents become bigger in some sort with age, the difference of length weighted mean length of fiber also is not significant, and coarseness of fiber has trend of augment by degree, while the fines content increases obviously with age. That difference of pulping properties between chemical pulping (KP process and Soda-AQ process) and chemimechanical pulping (SCMP process and APMP process) is not significant, which is consistent with the analysis of chemical composition and fiber morphology. Considering comprehensively, the tree age of 5 years is better for paper making industry, also the mixed pulping with different ages of the triploid of populus tomentosa is feasible with steady pulp quality.