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Use of Industrial Hemp Fibers to Reinforce Wheat Gluten Plastics

机译：使用工业麻纤维增强小麦面筋塑料

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摘要

The next generation of manufactured products must be sustainable and industrially eco-efficient, making materials derived from plants an alternative of particular interest. Wheat gluten (WG) is an interesting plant material to be used for production of plastic similar materials due to its film-forming properties. For usage of plastics in a wider range of applications, composite materials with improved mechanical properties are demanded. The present study investigates the possibilities of reinforcing WG plastics with hemp fibers. Samples were manufactured using compression molding (130 ℃, 1600 bar, 5 min). Variation in fiber length, content (5, 10, 15 and 20 wt%) and quality (poor, standard, good) were evaluated. Mechanical properties and structure of materials were examined using tensile testing, light and scanning electron microscopy. Hemp fiber reinforcement of gluten plastics significantly influenced the mechanical properties of the material. Short hemp fibers processed in a high speed grinder were morernhomogenously spread in the material than long unprocessed fibers. Fiber content in the material showed a significant positive correlation with tensile strength and Young's modulus, and a negative correlation with fracture strain and strain at maximum stress. Quality of the hemp fibers did not play any significant role for tensile strength and strain, but the Young's modulus was significantly and positively correlated with hemp fiber quality. Despite the use of short hemp fibers, the reinforced gluten material still showed uneven mechanical properties within the material, a result from clustering of the fibers and too poor bonding between fibers and gluten material. Both these problems have to be resolved before reinforcement of gluten plastics by industrial hemp fibers is applicable on an industrial scale.
机译：下一代制成品必须具有可持续性并且在工业上具有生态效益，这使得来自植物的材料成为人们特别关注的替代方案。小麦面筋（WG）是一种有趣的植物材料，由于其具有成膜特性，可用于生产类似塑料的材料。为了在更广泛的应用中使用塑料，需要具有改善的机械性能的复合材料。本研究调查了用大麻纤维增强WG塑料的可能性。使用压缩成型（130℃，1600 bar，5分钟）制造样品。评估纤维长度，含量（5、10、15和20 wt％）和质量（差，标准，好）的变化。使用拉伸试验，光和扫描电子显微镜检查材料的机械性能和结构。面筋塑料的大麻纤维增强极大地影响了材料的机械性能。在高速研磨机中加工的短麻纤维比未加工的长麻纤维更均匀地分布在材料中。材料中的纤维含量与拉伸强度和杨氏模量呈显着正相关，与断裂应变和最大应力下的应变呈负相关。大麻纤维的质量对拉伸强度和应变没有任何显著作用，但杨氏模量与大麻纤维质量显着正相关。尽管使用了短麻纤维，但是增强的面筋材料在材料内仍显示出不均匀的机械性能，这是由于纤维的聚集以及纤维与面筋材料之间的粘合性太差所致。在通过工业用大麻纤维增强面筋塑料之前，必须解决这两个问题。

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  • 来源
    《Journal of Polymers and the Environment》 |2009年第4期|259-266|共8页
  • 作者

    C. Wretfors; S.-W. Cho; M. S. Hedenqvist; S. Marttila; S. Nimmermark; E. Johansson;

  • 作者单位

    Faculty of Landscape Planning, Horticulture and Agricultural Sciences, Swedish University of Agricultural Sciences, P.O. Box 104, 230 53 Alnarp, Sweden;

    Fibre and Polymer Technology, Royal Institute of Technology, 100 44 Stockholm, Sweden;

    Fibre and Polymer Technology, Royal Institute of Technology, 100 44 Stockholm, Sweden;

    Faculty of Landscape Planning, Horticulture and Agricultural Sciences, Swedish University of Agricultural Sciences, P.O. Box 102, 230 53 Alnarp, Sweden;

    Faculty of Landscape Planning, Horticulture and Agricultural Sciences, Swedish University of Agricultural Sciences, P.O. Box 105, 230 53 Alnarp, Sweden;

    Faculty of Landscape Planning, Horticulture and Agricultural Sciences, Swedish University of Agricultural Sciences, P.O. Box 104, 230 53 Alnarp, Sweden;

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  • 正文语种 eng
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  • 关键词

    composite materials; hemp; plastics; renewable raw materials; wheat gluten;

    机译：复合材料;麻;塑料;可再生原料;小麦面筋;

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