Preparation and Characterization of Carrot Nanocellulose and Ethylene/Vinyl Acetate Copolymer-Based Green Composites

IF 1.3 Q3 ENGINEERING, MULTIDISCIPLINARY
None Yu-Cian Ke, None Ying-Chieh Chao, None Chun-Wei Chang, None Yeng-Fong Shih
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引用次数: 0

Abstract

This study aims to investigate the effect of nanocellulose on the properties and physical foaming of ethylene/vinyl acetate (EVA) copolymer. The nanocellulose is prepared from waste carrot residue using the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidation method (CT) and is further modified through suspension polymerization of methyl methacrylate (MMA) monomer (CM). The obtained nanocellulose samples (CT or CM) are added to EVA to create a series of nanocomposites. Moreover, the EVA and CM/EVA composite were further foamed using supercritical carbon dioxide physical foaming. TEM results show that the average diameters of CT and CM are 24.35 ± 3.15 nm and 30.45 ± 1.86 nm, respectively. The analysis of mechanical properties demonstrated that the tensile strength of pure EVA increased from 10.02 MPa to 13.01 MPa with the addition of only 0.2 wt% of CM. Furthermore, the addition of CM to EVA enhanced the melt strength of the polymer, leading to improvements in the physical foaming properties of the material. The results demonstrate that the pore size of the CM/EVA foam material is smaller than that of pure EVA foam. Additionally, the cell density of the CM/EVA foam material can reach 3.23 × 1011 cells/cm3.
胡萝卜纳米纤维素与乙烯/醋酸乙烯共聚物基绿色复合材料的制备与表征
研究纳米纤维素对乙烯/醋酸乙烯共聚物(EVA)性能和物理发泡性能的影响。以废胡萝卜渣为原料,采用2,2,6,6-四甲基哌啶-1-氧(TEMPO)氧化法(CT)制备纳米纤维素,并通过甲基丙烯酸甲酯(MMA)单体(CM)的悬浮聚合进一步改性。将获得的纳米纤维素样品(CT或CM)添加到EVA中以创建一系列纳米复合材料。采用超临界二氧化碳物理发泡法对EVA和CM/EVA复合材料进行了进一步发泡。TEM结果表明,CT和CM的平均直径分别为24.35±3.15 nm和30.45±1.86 nm。力学性能分析表明,仅添加0.2 wt%的CM,纯EVA的抗拉强度从10.02 MPa提高到13.01 MPa。此外,在EVA中添加CM增强了聚合物的熔体强度,从而改善了材料的物理发泡性能。结果表明:CM/EVA泡沫材料的孔径比纯EVA泡沫材料的孔径小;此外,CM/EVA泡沫材料的孔密度可达3.23 × 1011孔/cm3。
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来源期刊
CiteScore
2.80
自引率
0.00%
发文量
18
审稿时长
12 weeks
期刊介绍: The IJETI journal focus on the field of engineering and technology Innovation. And it publishes original papers including but not limited to the following fields: Automation Engineering Civil Engineering Control Engineering Electric Engineering Electronic Engineering Green Technology Information Engineering Mechanical Engineering Material Engineering Mechatronics and Robotics Engineering Nanotechnology Optic Engineering Sport Science and Technology Innovation Management Other Engineering and Technology Related Topics.
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