Changes of Lignin Molecular Weight of Triploid of Populous Tomentosa during KP,EMCC Cooking and TCF Bleaching;

Alkaline pulping characteristics of giant reed with AP、KP、AP-AQ & KP-AQ;

4,6 and 10 years old were used in SCMP and KP pulping experiment and chemical analysis in order to clarify the effect of wood age on chemical components and their pulping characteristics.

This paper systematically investigated bleaching properties of AS-AQ pulp of Japanese larch and compared the differences between AS-AQ pulp and KP pulp in order to understand physical properties of Japanese larch pulp.

A comparison between Soda-AQ and KP-AQ cooking characteristics of hybrid giant napier;

Alkaline pulping characteristics of giant reed with AP、KP、AP-AQ & KP-AQ;

As a result,the physical properties of KP unbleached pulp were close to B grade national standard of unbleached softwood KP pulp,those of KP bleached pulp reached A grade national standard of bleached softwood KP pulp.

The results showed that the cooking yield of AS-AQ pulp is higher than KP by 2 percent, and intrinsic viscosity is higher by 20% when the kappa number are alike.