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首页> 外文会议>TAPPI International Conference on Nanotechnology 2006 >Nanotechnology for Paper Recycling
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Nanotechnology for Paper Recycling

机译：纳米纸回收技术

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The extent and success of paper recycling depends on the quality of the recovered fibers from used paper. We modified short broken fibers by PSS/PAH layer-by-layer (LbL) nano-assemblies, first to smoothen out fiber wall damages and second to change fiber surface potentials for selective distribution of virgin and recycled fibers in the paper structure. We substituted positively charged PSS/PAH electrolyte coated broken fibers for untreated broken fibers. At 10 % broken fiber addition to virgin fiber, the PSS/PAH nano-coating increased handsheet tensile properties by 24 %. When both fiber fractions; the virgin fibers were nanocoated to negative surface charge and the broken fibers were nanocoated to positive surface charge, the paper strength increased 45 %. The positively charged fines and broken short fibers readily adhered to the negatively charged virgin fibers. The positive, small fiber segments became an integral part of the paper structure and provided a tighter paper. Such repairs to damaged recovered fibers and surface modifications can restore fiber qualities and improve recycled paper quality.
机译：纸张回收的范围和成功与否取决于从废纸中回收的纤维的质量。我们通过PSS / PAH逐层（LbL）纳米组件对短纤维进行了改性，首先是消除纤维壁损伤，其次是改变纤维表面电势，以便在纸结构中选择性分配原始纤维和再生纤维。我们用带正电的PSS / PAH电解质涂覆的断裂纤维代替了未处理的断裂纤维。在原始纤维中添加10％的断裂纤维后，PSS / PAH纳米涂层将手抄纸的拉伸性能提高了24％。当两种纤维都分开时；原始纤维被纳米包覆至负表面电荷，断裂纤维被纳米包覆至正表面电荷，纸强度提高了45％。带正电的细粉和断裂的短纤维容易粘附到带负电的原始纤维上。正极的小纤维段成为纸结构的组成部分，并提供了更紧密的纸。修复受损的回收纤维和进行表面改性可以恢复纤维质量，并提高再生纸的质量。

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