纸浆比表面积与保水值的相关性

Study on the Relativity between Specific Area and WRV of the Stock

漂白桉木KP浆的保水值(WRV)与比表面积可建立数学模型y=127．15 lnx+12．574．相关性系数R^2为0．9032。pH值影响纸浆纤维上羧基的电离程度,改变纸浆的WRV。不同pH值下,漂白桉木KP浆的WRV与比表面积可建立数学模型y=[0．867(pH)~2-11．705(pH)+136．4]lnx+[- 1．4266(pH)~2+18．246(pH)-22．001]。电导率对纸浆的WRV也有影响。在不同电导率影响下,漂白桉木KP浆WRV与比表面积可建立数学模型y=( 1271．5ρ~2-456．1ρ+138．59)lnx-1261．1ρ~2+481．63ρ-14．912)。对3个数学模型验证表明,实测纸浆WRV与通过数学模型公式计算的WRV数据基本相符。

By regressive analyzing the relation between specific area and water retention value （WRV） of the bleached eucalyptus KP can be expressed with a logarithm regressive equation as follows： y=127.15lnx＋12.574, the full pertinent R^2=0.9032. PHvalue has an obvious effect on the carboxyl ionization degree of the stock and influences its WRV, and conductivity also affects the WRV of the stock. Similarity the dependences of the relation between specific area and WRV on the pH value and conductivity can be expressed as the following logarithm regressive equation respectively： y=[0.867（pH）^2 11.705（pH）＋136.4]lnx＋[- 1.4266（pH）2＋18.246（pH）-22.001], and y=[1271.5ρ^2-456.1ρ＋138.59]lnx＋[-1261.1ρ＋481.63ρ-14.912]. By comparing the WRV tested and calculated by the regressive equations, the result shows that the calculated values accord with the measured value very well.