论文部分内容阅读
为探索等离子接枝聚合对纤维表面化学组成和纸页强度的影响,本文采用二段法对未漂云杉化机浆进行等离子接枝丙烯酰胺,使用扫描电镜分析纤维表面形貌,利用XPS分析纤维表面化学元素的变化。结果表明,未漂云杉CTMP浆等离子接枝丙烯酰胺的最佳条件为时间60min,温度45℃,单体浓度30。等离子接枝聚合后,纤维表面的C1和C2含量减少,C3、O、N含量增加。与未处理CTMP相比,纸页的抗张指数和湿强指数分别增加了62.5和59.2。纤维表面接枝的聚丙烯酰胺在纤维表面呈补丁状分布。
In order to explore the effect of plasma graft polymerization on the chemical composition and paper strength of fiber surface, two-step method was used to graft acrylamide into un-spruce pulp, and the surface morphology of fiber was analyzed by scanning electron microscopy. XPS analysis Changes in chemical elements on the fiber surface. The results showed that the optimum conditions for grafting acrylamide onto unmodified spruce CTMP pulp were 60 min, 45 ℃ and monomer concentration of 30. After plasma graft polymerization, the content of C1 and C2 on the fiber surface decreased, and the content of C3, O, N increased. Compared with untreated CTMP, the sheet tensile index and wet strength index increased by 62.5 and 59.2. Polyacrylamide grafted on the fiber surface is patchy on the fiber surface.