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Effect on thermal, mechanical, and biodegradable properties of plasma-treated fish scale powder/linear low-density polyethylene polymer composite films

机译:对等离子体处理的鱼鳞粉/线性低密度聚乙烯聚合物复合膜的热、机械和生物降解性能的影响

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In the present work, we report the effect of low-temperature plasma treatment on thermal, mechanical, and biodegradable properties of polymer composite blown films prepared from carp fish scale powder (CFSP) and linear low-density polyethylene (LLDPE). The CFSP was melt compounded with LLDPE using a filament extruder to prepare 1, 2, and 3 wt. of CFSP in LLDPE polymer composite filaments. These filaments were further pelletized and extruded into blown films. The blown films extruded with 1, 2, and 3 wt. of CFSP in LLDPE were tested for thermal and mechanical properties. It was observed that the tensile strength decreased with the increased loading content of CFSP, and 1 CFSP/LLDPE exhibited the highest tensile strength. To study the effect of low-temperature plasma treatment, 1 CFSP/LLDP polymer composite with high tensile strength was plasma treated with O2 and SF6 gas before blow film extrusion. The 1 CFSP/LLDPE/SF6-extruded blown films showed increased thermal decomposition, crystallinity, tensile strength, and modulus. This may be due to the effect of crosslinking by the plasma treatment. The maximum thermal decomposition rate, crystallinity , tensile strength, and modulus obtained for 1 CFSP/LLDPE/SF6 film were 500.02 degrees C, 35.79, 6.32 MPa, and 0.023 GPa, respectively. Furthermore, the biodegradability study on CFSP/LLDPE films buried in natural soil for 90 days was analyzed using x-ray fluorescence. The study showed an increase in phosphorus and calcium mass percent in the soil. This is due to the decomposition of the hydroxyapatite present in the CFSP/LLDPE biocomposite.Schematic diagram of polymer film fabrication process. image
机译:在本工作中,我们报道了低温等离子体处理对由鲤鱼鱼鳞粉 (CFSP) 和线性低密度聚乙烯 (LLDPE) 制备的聚合物复合吹塑薄膜的热、机械和可生物降解性能的影响。使用长丝挤出机将 CFSP 与 LLDPE 熔融复合,在 LLDPE 聚合物复合长丝中制备 1、2 和 3 wt.% 的 CFSP。这些细丝进一步造粒并挤出成吹塑薄膜。在 LLDPE 中用 1、2 和 3 wt.% 的 CFSP 挤出的吹塑薄膜进行了热和机械性能测试。观察到拉伸强度随着 CFSP 负载量的增加而降低,其中 1% CFSP/LLDPE 表现出最高的拉伸强度。为研究低温等离子体处理的效果,在吹膜挤出前,用 O2 和 SF6 气体对 1% 具有高拉伸强度的 CFSP/LLDP 聚合物复合材料进行等离子体处理。1% CFSP/LLDPE/SF6 挤出吹塑薄膜显示出增加的热分解、结晶度、拉伸强度和模量。这可能是由于等离子体处理的交联效应。1% CFSP/LLDPE/SF6 薄膜获得的最大热分解速率、结晶度、拉伸强度和模量分别为 500.02 °C、35.79、6.32 MPa 和 0.023 GPa。此外,使用 X 射线荧光分析了在天然土壤中埋藏 90 天的 CFSP/LLDPE 薄膜的生物降解性研究。研究表明,土壤中的磷和钙质量百分比有所增加。这是由于 CFSP/LLDPE 生物复合材料中存在的羟基磷灰石分解。聚合物薄膜制造过程示意图。图像

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