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Utilization of Micro Sisal Fibers as Reinforcement Agent and Polypropylene or Polylactic Acid as Polymer Matrices in Biocomposites Manufacture

机译:将微剑束用作增强剂和聚丙烯或聚乳酸作为生物复合材料制造中的聚合物基质

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摘要

Sisal (Agave sisalana) as a perennial tropical plant grows abundantly in Indonesia. Its fibers can be used as the reinforcement agent of biocomposite products. Utilization of sisal as natural fiber has some notable benefits compared to synthetic fibers, such as renewable, light in weight, and low in cost. Manufacture of biocomposite requires the use of matrix such as thermoplastic polymer, e.g. polypropylene (PP) and polylactic acid (PLA) to bond together with the reinforcement agent (e.g. sisal fibers). In relevant, experiment was conducted on biocomposites manufacture that comprised sisal fibers and PP as well as PLA. Sisal fibers were converted into pulp, then refined to micro-size fibrillated fibers such that their diameter reduced to about 10 μm, and dried in an oven. The dry microfibrillated sisal pulp fibers cellulose (MSFC) were thoroughly mixed with either PP or PLA with varying ratios of MSFC/PP as well as MSFC/PLA, and then shaped into the mat (i.e. MSFC-PP and MSFC-PLA biocomposites). Two kinds of shaping was employed, i.e. hot-press molding and injection molding. In the hot-press molding, the ratio of  MSFC/PP as well as MSFC/PLA ranged about 30/70-50/50. Meanwhile in the injection (employed only on assembling the MSFC-PLA biocomposite), the ratio of MSFC/PLA varied about 10/90-30/70. The resulting shaped MSFC-PP and MSFC-PLA biocomposites were then tested of its physical and mechanical properties. With the hot-press molding device, the physical and mechanical (strength) properties of MSFC-PLA biocomposite were higher than those of  MSFC-PP biocomposite. The optimum ratio of  MSFC/PP as well as MSFC/PLA reached concurrently at 40/60. The strengths of MSFC-PP as well as MSFC-PLA biocomposites were greater than those of individual polymer (PP and PLA). With the injection molding device, only the MSFC-PLA  biocomposite  was formed  and its strengths  reached  maximum  at 30/70  ratio.  The particular strengths (MOR and MOE) of MSFC-PLA biocomposite shaped with injection molding were lower than those with hot-press molding, both at 30/70 ratio. The overall MOR of such MSFC- PLA biocomposite was lower than that of pure PLA, while its MOE was still mostly higher.
机译:Sisal(龙舌兰Sisalana)作为一间多年生热带植物在印度尼西亚大量增长。其纤维可用作生物复合产品的增强剂。与天然纤维相比,与天然纤维的利用有一些显着的益处,例如可再生,重量轻,成本低。生物复合材料的制造需要使用基质如热塑性聚合物,例如热塑性聚合物。聚丙烯(PP)和聚乳酸(PLA)与增强剂(例如Sisal纤维)粘合。在相关的中,在生物复合材料制造上进行实验,该制造包括Sisal纤维和PP以及PLA。将Sisal纤维转化为纸浆,然后精制到微尺寸的原纤化纤维,使其直径减少至约10μm,并在烘箱中干燥。干燥的微纤维纤维浆纤维纤维素(MSFC)与PP或PLA充分利用MSFC / PP的不同比率以及MSFC / PLA,然后成形为垫(即MSFC-PP和MSFC-PLA生物复合材料)。采用两种成型,即热压模塑和注塑成型。在热压成型中,MSFC / PP的比率以及MSFC / PLA的比率约为30 / 70-50 / 50。同时在注射中(仅在组装MSFC-PLA生物复合材料上使用,MSFC / PLA的比例在约10 / 90-30 / 70中变化。然后测试所得形状的MSFC-PP和MSFC-PLA生物复合材料的物理和机械性能。通过热压成型装置,MSFC-PLA生物复合材料的物理和机械(强度)性质高于MSFC-PP生物复合材料。 MSFC / PP以及MSFC / PLA的最佳比率在40/60同时达到。 MSFC-PP的强度以及MSFC-PLA生物复合材料大于单个聚合物(PP和PLA)的强度。利用注射成型装置,仅形成MSFC-PLA生物复合材料,其强度以30/70的比率达到最大值。用注射成型的MSFC-PLA生物复合材料的特定强度(MOR和MOE)低于30/70比例的热压成型。这种MSFC- Biocomposite的总体莫均低于纯PLA,而其MOE仍然大部分高。

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