Preparation and application of cationized pulp fiber as a papermaking wet-end additive

阳离子纸浆纤维的制备及其用作造纸湿部添加剂的研究(英文)

Cationized pulp fibers （CPF） were prepared by the adsorption of a novel biodegradable cationic ester quaternary ammonium salt （31441） on bleached softwood kraft pulp fibers. The optimized conditions for the CPF preparation were： 4% of 31441 （based on oven-dry pulp）, 80℃ and 30 rain. The CPF was characterized by FT-IR, SEM and XPS. Experimental results showed that the CPF improved the retention of precipitated calcium carbonate （PCC） filler significantly. With 0.9% CPF （based on oven-dry pulp）, the retention of PCC increased from 57.53% to 72.21%. The physical properties of paper were also slightly improved. The tensile strength and burst strength of the paper with CPF were higher than those with CPAM. CPF addition had no effect on the stock drainage.

本研究在水溶液中将一种新型可降解阳离子酯基季铵盐(31441)吸附于加拿大漂白针叶木浆纤维上,制得阳离子纸浆纤维(CPF)。CPF最佳合成条件为:反应温度80℃、31441用量4%(对绝干纸浆)、反应时间30min。采用FT-IR、SEM和XPS等手段对CPF进行了表征。结果表明,用作麦草浆湿部添加剂的制得的阳离子纸浆纤维能显著提高沉淀碳酸钙(PCC)填料的留着率,添加0.9%的CPF(对绝干纸浆)即可使PCC的留着率从57.53%提高到72.21%,同时能够对纸张的物理性能有所改善,添加CPF的麦草浆成纸的抗张强度和耐破强度要明显高于添加CPAM的,而不低于添加未改性加拿大漂白针叶木浆纤维的。CPF不影响浆料的滤水性能。