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Valorization of oat hull fiber from agri-food industrial waste as filler for poly(3-hydroxybutyrate- co -3-hydroxyhexanoate)
Journal of Material Cycles and Waste Management ( IF 3.1 ) Pub Date : 2020-09-12 , DOI: 10.1007/s10163-020-01104-4
Alberto Giubilini , Corrado Sciancalepore , Massimo Messori , Federica Bondioli

Oat hull fibers are an agri-food industrial waste used in this research as a filler for a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) matrix, to obtain a fully bio-based polymer-matrix composite material. The compounding process was carried out with a twin-screw extruder, avoiding chemical solvents and employing a technology commonly used by the industrial field. Silanization procedure was run to improve the affinity between the matrix and the filler. Compounds were structurally, microstructurally, mechanically and thermally characterized. Results denote that also at 8 v/v%, oat hull fibers work not only as inert filler, but also they have a slightly improving effect on mechanical properties of neat biopolymer, increasing of almost 12% the Young’s modulus, without a loss in tensile elongation at break. Therefore, this research study is a noteworthy approach which reduces the material costs and PHBH volumes, while valorizing waste biomasses.



中文翻译:

从农业食品工业废料中提取燕麦壳纤维作为聚(3-羟基丁酸酯-co-3-羟基己酸酯)的填充料

燕麦壳纤维在此研究用作聚(3-羟基丁酸酯的填料的农产食品工业废弃物-3-羟基己酸酯)基质,以获得完全基于生物的聚合物-基质复合材料。配混过程使用双螺杆挤出机进行,避免使用化学溶剂,并采用工业领域常用的技术。进行硅烷化程序以改善基质与填料之间的亲和力。对化合物进行了结构,微观结构,机械和热学表征。结果表明,在8 v / v%的条件下,燕麦壳纤维不仅可以用作惰性填料,而且还对纯净生物聚合物的机械性能有轻微改善的作用,杨氏模量提高了近12%,而拉伸强度没有损失断裂伸长率。因此,这项研究是一种值得注意的方法,它可以降低材料成本和降低PHBH的体积,同时使废弃的生物质保持价值。

更新日期:2020-09-12
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