Preparation of Blocked Polyurethane/PAE Composite and Its Application in Paper Strengthening
Preparation of Blocked Polyurethane/PAE Composite and Its Application in Paper Strengthening
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DOI：
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发表时间：
2009
影响因子：
5.8
通讯作者：
Lai Xiao-juan
中科院分区：
文献类型：
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作者：
Lai Xiao-juan
【摘要】：以咪唑嵌段聚氨酯(BPU)N-甲基吡咯烷酮溶液为原料,通过聚酰胺与环氧氯丙烷反应制备了咪唑嵌段聚氨酯/PAE复合纸力剂。研究了纸力增强剂的组份和用量对处理后纸张物理性能的影响。同时采用FT-IR和TEM对BPU的结构和所得胶乳的颗粒形貌进行了表征。结果表明,湿拉伸指数可以从4.93 N·m/g提高到7.08 N·m/g,适当添加BPU后提高了43.61%。BPU分子结构中发现了咪唑环和聚氨酯结构。颗粒形貌为不规则球形,其尺寸与BPU含量密切相关。
Imidazole blocked polyurethane/PAE composite paper strengthening agents were prepared through the reaction of polyaminamide and epichlorohydrin in imidazole blocked polyurethane(BPU) N-methyl pyrrolidone solution.Effects of the components and dosage of the paper strengthening agent on the physical properties of the treated paper were studied.At the same time,the structure of BPU and the particle morphology of the resultant latex were characterized by FT-IR and TEM.The results showed that the wet tensile index can increase from 4.93 N·m/g to 7.08 N·m/g,and has an increase of 43.61% with a proper addition of BPU.Structures of imidazole ring and polyurethane are found in the BPU molecular structure.The morphology of the particle is anomalous sphericity and its size is close related to the content of BPU.