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首页> 外文期刊>Journal of Polymers and the Environment >Green Composites of Poly (Lactic Acid) and Sugarcane Bagasse Residues from Bio-refinery Processes
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Green Composites of Poly (Lactic Acid) and Sugarcane Bagasse Residues from Bio-refinery Processes

机译：生物精炼过程中的聚乳酸和甘蔗渣残渣的绿色复合材料

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摘要

Twin-screw extrusion was used to prepare the composites consisting of PLA and three types of sugarcane bagasse residues (up to 30 wt%) derived from different steps of a biorefinery process. Each residue had different composition, particle size and surface reactivity due to chemical and biological (enzyme, microbes) treatments that the biomass was subjected to. The effects of different residue characteristics on properties, crystallization behaviors and morphologies of PLA composites were investigated. Besides, a small amount (2 wt%) of coupling agent, Desmodur~® VKS 20 (DVKS), was used to improve the interfacial bonding between PLA and bagasse residues. The results indicated that in the presence of 2 % DVKS, PLA composite with pretreated residue exhibited the maximum strength properties (98.94 % tensile strength and 93.91 % flexural strength of neat PLA), while PLA composite with fermentation residue exhibited the minimum strength properties (88.98 % tensile strength and 81.91 % flexural strength of neat PLA).
机译：使用双螺杆挤出来制备由PLA和三种类型的甘蔗渣残渣（最多30 wt％）组成的复合材料，这些残渣来自生物精炼工艺的不同步骤。由于对生物质进行化学和生物（酶，微生物）处理，每个残留物具有不同的组成，粒径和表面反应性。研究了不同残渣特性对PLA复合材料性能，结晶行为和形貌的影响。此外，使用少量（2 wt％）偶联剂Desmodur®VKS 20（DVKS）来改善PLA与甘蔗渣残渣之间的界面键合。结果表明，在存在2％DVKS的情况下，带有预处理残渣的PLA复合材料表现出最大的强度性能（纯PLA的抗张强度为98.94％和抗弯强度为93.91％），而带有发酵残渣的PLA复合材料的强度特性却最小（88.98）。纯PLA的抗拉强度（％）和抗弯强度的81.91％。

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  • 来源
    《Journal of Polymers and the Environment》 |2013年第3期|780-788|共9页
  • 作者

    Letian Wang; Zhaohui Tong; Lonnie O. Ingram; Qingzheng Cheng; Siobhan Matthews;

  • 作者单位

    Department of Agriculture and Biological Engineering, IFAS, University of Florida, PO. Box 110570, Gainesville,FL 32611-0570, USA;

    Department of Agriculture and Biological Engineering, IFAS, University of Florida, PO. Box 110570, Gainesville,FL 32611-0570, USA;

    Department of Microbiology and Cell Science, University of Florida, PO. Box 110700, Gainesville, FL 32611, USA;

    Department of Agriculture and Biological Engineering, IFAS, University of Florida, PO. Box 110570, Gainesville,FL 32611-0570, USA;

    SCF Processing Ltd., Unit 65a, Boyne Business Park,Drogheda, County Louth, Ireland;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Sugarcane bagasse; Poly (lactic acid); Composite; Twin-screw extrusion;

    机译：甘蔗渣;聚乳酸综合;双螺杆挤出;

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