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Effect of partial replacement of chitosan with halloysite nanotubes on the properties of polylactic acid hybrid biocomposites
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-02-04 , DOI: 10.1002/vnl.21816 Nor Helya Iman Kamaludin 1, 2 , Hanafi Ismail 1 , Arjulizan Rusli 1 , Sung Ting Sam 2, 3
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-02-04 , DOI: 10.1002/vnl.21816 Nor Helya Iman Kamaludin 1, 2 , Hanafi Ismail 1 , Arjulizan Rusli 1 , Sung Ting Sam 2, 3
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In this study, hybrid chitosan/halloysite nanotubes (Cs/HNTs) reinforced polylactic acid (PLA) were prepared via melt compounding and compression molding techniques. In the fabrication of PLA/Cs/HNTs hybrid biocomposites, the partial replacement of Cs with HNTs was performed at filler loading of 2.5 parts per hundred parts of polymer (php), proceeding from the highest tensile strength of PLA/Cs obtained in our previous study. Cs was partially replaced with different HNTs loadings (0.5, 1, 1.5, 2, and 2.5) php and its effects on the functional group, thermal, tensile, morphological, and water absorption properties were investigated systematically. The results revealed that the combined loading of 1 php Cs and 1.5 php HNTs hybrid fillers into PLA showed the best performance in all properties. Fourier transform infrared spectroscopy (FTIR) analysis indicated that the siloxane (SiO) group of HNTs had chemically interacted with the amine group of Cs. The thermal analysis demonstrated that partial replacement of Cs with 1.5 php HNTs improved the thermal stability of PLA/2.5Cs/0HNTs biocomposite by ~12%. Yet, the percentage of crystallinity (χc) reduced with HNTs addition due to the phase adhesion improvement. Moreover, PLA/1Cs/1.5HNTs hybrid biocomposites showed the highest tensile strength and elongation at break of 59 MPa and 2.72%, respectively. This correlated with the uniform dispersion and better interfacial adhesion between Cs/HNTs fillers in the PLA matrix, as confirmed by the field emission scanning electron microscopy (FESEM). In addition, partial replacement of Cs with HNTs exhibited a lower water absorption percentage, which suggested the advantage of hybrid fillers to reduce water uptake, and is beneficial in a wide range of applications.
中文翻译：
埃洛石纳米管部分取代壳聚糖对聚乳酸杂化生物复合材料性能的影响。
在这项研究中，通过熔融复合和压缩成型技术制备了壳聚糖/硅藻土杂化纳米管（Cs / HNTs）增强的聚乳酸（PLA）。在PLA / Cs / HNTs杂化生物复合材料的制造中，填料的填充量为每100份聚合物（php）2.5份，使用HNTs部分置换Cs，这是从我们之前获得的最高PLA / Cs拉伸强度出发学习。用不同的HNT负载量（0.5、1、1.5、2和2.5）php部分取代了Cs，并系统地研究了其对官能团，热，拉伸，形态和吸水性能的影响。结果表明，将1 php Cs和1.5 php HNTs杂化填料组合加载到PLA中，在所有性能上均表现出最佳性能。NT O）组的HNT与Cs的胺基发生化学反应。热分析表明，用1.5 php HNTs部分取代Cs可将PLA / 2.5Cs / 0HNTs生物复合材料的热稳定性提高约12％。然而，结晶度的百分比（χ ç由于相粘附性的提高，HNTs的添加减少了）。此外，PLA / 1Cs / 1.5HNTs杂化生物复合材料的最高拉伸强度和断裂伸长率分别为59 MPa和2.72％。场发射扫描电子显微镜（FESEM）证实，这与PLA基质中Cs / HNTs填料之间的均匀分散和更好的界面附着力相关。此外，用HNTs部分取代Cs表现出较低的吸水率，这表明杂化填料具有降低吸水率的优势，并且在广泛的应用中有益。
更新日期：2021-02-04
中文翻译：
埃洛石纳米管部分取代壳聚糖对聚乳酸杂化生物复合材料性能的影响。
在这项研究中，通过熔融复合和压缩成型技术制备了壳聚糖/硅藻土杂化纳米管（Cs / HNTs）增强的聚乳酸（PLA）。在PLA / Cs / HNTs杂化生物复合材料的制造中，填料的填充量为每100份聚合物（php）2.5份，使用HNTs部分置换Cs，这是从我们之前获得的最高PLA / Cs拉伸强度出发学习。用不同的HNT负载量（0.5、1、1.5、2和2.5）php部分取代了Cs，并系统地研究了其对官能团，热，拉伸，形态和吸水性能的影响。结果表明，将1 php Cs和1.5 php HNTs杂化填料组合加载到PLA中，在所有性能上均表现出最佳性能。NT O）组的HNT与Cs的胺基发生化学反应。热分析表明，用1.5 php HNTs部分取代Cs可将PLA / 2.5Cs / 0HNTs生物复合材料的热稳定性提高约12％。然而，结晶度的百分比（χ ç由于相粘附性的提高，HNTs的添加减少了）。此外，PLA / 1Cs / 1.5HNTs杂化生物复合材料的最高拉伸强度和断裂伸长率分别为59 MPa和2.72％。场发射扫描电子显微镜（FESEM）证实，这与PLA基质中Cs / HNTs填料之间的均匀分散和更好的界面附着力相关。此外，用HNTs部分取代Cs表现出较低的吸水率，这表明杂化填料具有降低吸水率的优势，并且在广泛的应用中有益。
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