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本文研究了木素含量为0．23％山杨漂白浆和1．05％速生杨未漂浆稀酸低温多相水解降解反应动力学特性。研究结果表明，该过程与棉浆、桦木和针叶材浆具有类似的特点，即纤维素多相水解过程分为快速降解和缓慢降解两个明显的阶段，而最终降至极限聚合度（山杨漂白浆为180，速生杨未漂浆为206）。根据试验数据计算了反应速度常数，山杨漂白浆为KAB＝2.5×10-4／min，速生杨未漂浆为KPu＝1．6×10－4／min，前者明显高于后者。随着水解时间的延长，水解残渣得率下降，其最终结果为83％～84％。
In this paper, lignin content of 0.23% Poplar bleached pulp and 1.05% fast-growing unbleached dilute acid low-temperature multiphase hydrolysis reaction kinetic characteristics. The results show that the process has the similar characteristics with cotton, birch and softwood pulp, that is, cellulose heterogeneous hydrolysis is divided into two obvious stages: rapid degradation and slow degradation, and finally to the limit of polymerization Yang bleached pulp 180, fast-growing Yang unbleached pulp 206). The reaction rate constants were calculated according to the experimental data. The KAB = 2.5 × 10-4 / min for Poplar bleached pulp and KPu = 1.6 × 10-4 / min for poplar are obviously higher than the latter. With the extension of hydrolysis time, the yield of hydrolyzed residue decreased, and the final result was 83% ~ 84%.