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首页> 外文期刊>Advanced Functional Materials >All-Natural, Degradable, Rolled-Up Straws Based on Cellulose Micro- and Nano-Hybrid Fibers
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All-Natural, Degradable, Rolled-Up Straws Based on Cellulose Micro- and Nano-Hybrid Fibers

机译：基于纤维素微型和纳米杂交纤维的全天然，可降解，卷起吸管

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摘要

Among all the plastic pollution, straws have brought particularly intricate problems since they are single use, consumed in a large volume, cannot be recycled in most places, and can never be fully degraded. To solve this problem, replacements for plastic straws are being developed following with the global trend of plastic straw bans. Nevertheless, none of the available degradable alternatives are satisfactory due to drawbacks including poor natural degradability, high cost, low mechanical performance, and poor water stability. Here, all-natural degradable straws are designed by hybridizing cellulose nanofibers and microfibers in a binder-free manner. Straws are fabricated by rolling up the wet hybrid film and sealed by the internal hydrogen bonding formed among the cellulose fibers after drying. The cellulose hybrid straws show exceptional behaviors including 1) excellent mechanical performance (high tensile strength of approximate to 70 MPa and high ductility with a fracture strain of 12.7%), 2) sufficient hydrostability (10x wet mechanical strength compared to commercial paper straw), 3) low cost, and 4) high natural degradability. Given the low-cost raw materials, the binder-free hybrid design based on cellulose structure can potentially be a suitable solution to solve the environmental challenges brought by the enormous usage of plastics straws.
机译：在所有的塑料污染中，吸管带来了特别复杂的问题，因为它们是单一使用的，在大量的卷中消耗，在大多数地方都不能被回收，并且永远不会完全退化。为了解决这个问题，塑料吸管的替代品正在开发出塑料秸秆禁止的全球趋势。然而，由于缺点，包括缺点，包括缺乏天然降解性，高成本，低机械性能和差的水稳定性，没有任何可降解的替代方案令人满意。这里，通过以无粘合剂方式杂交纤维素纳米纤维和微纤维来设计全天然可降解的吸管。通过卷起湿式混合膜来制造秸秆，并在干燥后通过在纤维素纤维中形成的内部氢键密封。纤维素杂交秸秆显示出优异的行为，包括1）优异的机械性能（高抗拉强度近似为70MPa，高延展性12.7％的裂缝株，2）与商品造纸相比，10倍湿机械强度）， 3）低成本，4）天然降解性高。鉴于低成本的原料，基于纤维素结构的无合成粘合剂混合设计可能是解决塑料吸管巨大用途所带来的环境挑战的合适解决方案。

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  • 来源
    《Advanced Functional Materials》 |2020年第22期|1910417.1-1910417.9|共9页
  • 作者

    Wang Xizheng; Pang Zhenqian; Chen Chaoji; Xia Qinqin; Zhou Yubing; Jing Shuangshuang; Wang Ruiliu; Ray Upamanyu; Gan Wentao; Li Claire; Chen Gegu; Foster Bob; Li Teng; Hu Liangbing;

  • 作者单位

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA|Univ Maryland Dept Mech Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mech Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA|Univ Maryland Dept Mech Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mech Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

    Trinity Ind Inc Dallas TX 75207 USA;

    Univ Maryland Dept Mech Engn College Pk MD 20742 USA;

    Univ Maryland Dept Mat Sci & Engn College Pk MD 20742 USA;

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  • 正文语种 eng
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  • 关键词

    cellulose; coarse-grained modeling; sustainable materials;

    机译：纤维素;粗粒造粒;可持续材料;

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