开心果壳粉增强/线性低密度聚乙烯/聚烯烃弹性体生物复合材料的机械、流变、热和形态特性

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES Journal of Thermoplastic Composite Materials Pub Date : 2024-05-07 DOI:10.1177/08927057241252142
Manjeet Singh, Amol Thite, Subhendu Ray Chowdhury, Harish Jagat Pant
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引用次数: 0

摘要

在本研究中,先将 20 wt% 的 ENGAGE(一种聚烯烃弹性体)与 80 wt% 的线性低密度聚乙烯(LLDPE)熔融混合,然后用不同成分(40 wt% 至 70 wt%)的开心果壳粉末(PSP)进行复合制备。研究了 PSP 含量的变化对机械性能的影响。由于 ENGAGE 独特的可加工性,复合材料的可加工性得到了改善。因此,由于无定形 ENGAGE 产生的额外空间,LLDPE/ENGAGE(LE82)共混物的填充能力也大大提高。同样,将 20 wt% 的 ENGAGE 与 80 wt% 的 LLDPE 混合,有助于将 LLDPE/ENGAGE/PSP 复合材料的机械性能保持在有效范围内。流变学研究证实,在 LE82 混合体系中加入大量 PSP 后,所有复合材料在整个频率范围内的复合粘度 (η)、存储模量 (G') 和损耗模量 (G") 几乎保持不变。从流变学研究中可以看出,复合材料的热塑性得到了保持。热重分析(TGA)和扫描电子显微镜(SEM)显示了基于 LE82 共混物的复合材料的结构完整性,揭示了有机填料以及复合材料的热稳定性。扫描电子显微镜还显示了 PSP 在 LLDPE/ENGAGE 混合基质中的均匀分散。这种生物复合材料具有 70 wt% 的生物可降解成分和可靠的机械性能,具有广泛的应用前景。
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Mechanical, rheological, thermal and morphological properties of pistachio shell powder reinforced / linear low-density polyethylene/polyolefin elastomer biocomposites
In the present study, 20 wt% ENGAGE (a polyolefin elastomer) is melt blended with 80 wt% linear low-density polyethylene (LLDPE) followed by composite preparation with pistachio shell powder (PSP) in various compositions (40 wt% to 70 wt%). The effect of variation of PSP content on mechanical properties is studied. The processability of composites is improved because of the unique processability of ENGAGE. Consequently, filler-containing capability of the LLDPE/ENGAGE (LE82) blend is also enhanced considerably due to extra space generated by amorphous ENGAGE. Again, blending of 20 wt% ENGAGE with 80 wt% LLDPE is helpful for maintaining mechanical properties of LLDPE/ENGAGE/PSP composite in useful range. The rheological study confirms that complex viscosity (η), storage modulus (G’) and loss modulus (G”) remain almost unchanged with the incorporation of a high quantity of PSP into the LE82 blend system for all the composites in the entire frequency range. From the rheological study, it is seen that the thermoplastic nature of the composites is maintained. Thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) show the structural integrity of LE82 blend-based composites revealing the thermal stability of the organic filler and consequently the composites. SEM also shows uniform dispersion of PSP into the LLDPE/ENGAGE blend matrix. Such biocomposite with 70 wt% biodegradable component and reliable mechanical properties is attractive for wide spread applications.
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来源期刊
Journal of Thermoplastic Composite Materials
Journal of Thermoplastic Composite Materials 工程技术-材料科学:复合
CiteScore
8.00
自引率
18.20%
发文量
104
审稿时长
5.9 months
期刊介绍: The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).
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