Debonding Performance of Various Cationic Surfactants on Networks Made of Bleached Kraft Fibers
Debonding Performance of Various Cationic Surfactants on Networks Made of Bleached Kraft Fibers
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DOI：
10.1021/ie101442p
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发表时间：
2010-09
影响因子：
4.2
通讯作者：
P. Fatehi;Kevin C. Outhouse;H. Xiao;Y. Ni
中科院分区：
文献类型：
--
作者：
P. Fatehi;Kevin C. Outhouse;H. Xiao;Y. Ni
脱粘剂在造纸工业中用于各种目的，例如增加薄纸的柔软度。本文研究了三种阳离子脂肪族铵盐表面活性剂和一种烷氧基化胺类表面活性剂对硫酸盐纤维的脱粘性能。结果表明，烷氧基化胺表面活性剂（AAS）在纤维上的吸附量最大，而阳离子表面活性剂十六烷基三甲基溴化铵（CAB）的疏水链较长，是最有效的脱粘剂。当CAB的用量达到20 mg/g时，拉伸指数和爆裂指数分别降低了37%和41%。当AAS的用量为20 mg/g时，网络的拉伸指数和破裂指数分别降低了18.6%和14.2%。应用AAS后，纤维网络的撕裂指数变化不大，但应用CAB后，撕裂指数增加了19%。纤维网络的应变破裂前的应用AAS增加，而它的应用CAB，这意味着表面活性剂具有不同的脱粘机制后，它减少。CAB的脱粘效率与打浆转数和纤维网定量无关。
Debonding agents are applied in the paper industry for various purposes, for example, to increase the softness of tissue paper. In this work, the debonding capacities of three cationic aliphatic ammonium surfactants and one alkoxylated amine surfactant on kraft fibers were determined. The results showed that the adsorption of the alkoxylated amine surfactant (AAS) was higher than that of others on the fibers, but a cationic cetyltrimethyl ammonium surfactant (cetyltrimethyl ammonium bromide, CAB) was the most effective debonding agent, probably because of its relatively long hydrophobic chain. By applying CAB at levels of up to 20 mg/g, the tensile and burst indices were reduced by 37% and 41%, respectively. By applying AAS at levels of up to 20 mg/g, the tensile and burst indices of the networks were reduced by 18.6%, and 14.2%, respectively. The tear index of the fiber networks negligibly changed upon application of AAS, but increased by 19% upon application of CAB. The strain of the fiber networks prior to rupturing increased upon application of AAS, whereas it decreased upon application of CAB, which implies that the surfactants have different debonding mechanisms. The debonding efficiency of CAB was independent of both the refining revolutions and basis weights of the fiber networks.