在多电解质植入的纸纤维上PAE吸附
Abdollah Karami1, Xiao Wu1, Jose Moran-Mirabal2
1Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada.
概括
在纸纤维上将水解聚乙烯-高胺无水化物 (PEMAc) 植入纸纤维上,可显著增加聚胺氨酸化水素 (PAE) 湿强树脂的吸附率. 这种修改通过增加纤维表面的树脂吸收来提高纸张强度.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纸和纸张科学 纸和纸张科学
背景情况:
- 纸张湿强树脂对于产品的耐用性至关重要.
- 优化树脂对纸纤维的吸附是提高纸张性能的关键.
- 了解表面修饰对吸附的影响对于材料开发至关重要.
研究的目的:
- 研究将水解聚乙烯-高胺无水化物 (PEMAc) 接种到漂白过的 kraft 纸纤维的影响.
- 为了增强化聚胺胺胺 (PAE) 湿强树脂的吸附.
- 分析吸附等热体,并引入一种新的等热体理想度度 (IX).
主要方法:
- 在漂白过的 kraft 纸纤维上移植 PEMAc.
- 使用PAE和聚二甲基化物 (PDADMAC) 的吸附性研究.
- 吸附异热体的分析以确定外部吸附的PAE (Γex) 和异热体的理想性 (IX).
- 未经修改,PEMAc移植和TEMPO氧化纸的比较.
主要成果:
- 将PEMAc移植到纸纤维上显著增加了PAE吸附.
- 4,1 mg/g纤维的PEMAc含量使PAE在外表面上被吸附的量增加了三倍.
- 每个PAE的阴离子电荷需要大约两个PEMAc阳离子碳酸基.
- 用悬挂链对PEMAc的修改对PAE吸附有很小的影响.
- 在类似的电荷含量下,TEMPO氧化并没有增强PAE吸附.
结论:
- 使用PEMAc进行表面移植是一种有效的策略,可以增强PAE湿强树脂对纸纤维的吸附.
- 这项研究引入并利用等温理想度指数 (IX) 来描述吸附行为.
- 通过优化树脂-纤维相互作用,PEMAc接种为提高纸张湿强度提供了一个有前途的途径.
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