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首页> 外文期刊>Journal of nanoscience and nanotechnology >Layer-by-layer nanocoating of lignocellulose fibers for enhanced paper properties
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Layer-by-layer nanocoating of lignocellulose fibers for enhanced paper properties

机译：木质纤维素纤维的逐层纳米涂层可增强纸张性能

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摘要

The systematic modification of the surface charge of lignocellulose fibers was performed with a polyelectrolyte layer-by-layer (LbL) nanocoating process to produce negatively and positively charged fibers. The fibers were coated with 20-50 nm thick polymer surface layers which subsequently increased interaction between the fibers during paper formation. The modified fibers were added to standard fibers at varying proportions to produce paper with corresponding variation in properties such as strength and electrical conductivity. Paper strength was doubled by manipulating the surface charge and coating thickness of the LbL-treated pulp fibers. It is demonstrated that the LbL coating process increased the fiber interactions and that these interactions enhanced the paper properties. This process, when applied to a simulated sample of recycle grade of fibers, produce paper with an increase in tear strength as compared with untreated fiber paper. Nanocoating fibers with polythiophene/polyallylamine multilayers produced marginally conductive pulp and paper. Paper electrical conductivity was proportional to the number of the bilayers deposited.
机译：木质纤维素纤维的表面电荷的系统修饰是通过聚电解质逐层（LbL）纳米涂层工艺进行的，以产生带负电和带正电的纤维。纤维涂有20-50 nm厚的聚合物表面层，随后在造纸过程中增加了纤维之间的相互作用。将改性纤维以不同比例添加到标准纤维中，以生产具有诸如强度和电导率之类的特性的相应变化的纸。通过处理经LbL处理的纸浆纤维的表面电荷和涂层厚度，纸张强度增加了一倍。事实证明，LbL涂层工艺增加了纤维相互作用，并且这些相互作用增强了纸张的性能。与未处理的纤维纸相比，此过程应用于模拟的纤维回收级样品时，其抗撕强度有所提高。具有聚噻吩/聚烯丙胺多层结构的纳米涂层纤维可生产出少量导电的纸浆和纸张。纸的电导率与沉积的双层数成正比。

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