Characteristics of polypropylene composites filled with palm oil-modified cellulose powder

IF 2.1 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Polymers & Polymer Composites Pub Date : 2023-11-01 DOI:10.1177/09673911231202186

Feng Tang, Dae Su Kim

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Abstract

Hydrophilic cellulose powder was modified with palm oil for hydrophobicity to strengthen the interfacial bonding between cellulose powder and hydrophobic polypropylene (PP). The palm oil-modified cellulose powders with various palm oil contents were analyzed by compatibility test, FTIR spectroscopy and TGA. The IR absorption peak for the ester bridges between cellulose powder and palm oil increased with the palm oil content attached to the cellulose powder. The PP/cellulose (80/20 by weight) composites with the pristine or one of the modified cellulose powders were prepared by melt blending followed by compression molding. The mechanical properties of the composites were measured by an impact and tensile test. The impact strength, elongation at break and water-resistance increased but tensile modulus decreased with the palm oil content. The composite with 4.87 wt.% of the palm oil showed optimum tensile properties. The SEM images showed that the interfacial bonding between the cellulose powders and the PP matrix was strengthened by the modification of the cellulose powder with the palm oil.

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棕榈油改性纤维素粉填充聚丙烯复合材料的特性研究

采用棕榈油对亲水性纤维素粉进行疏水性改性，以增强纤维素粉与疏水性聚丙烯(PP)之间的界面结合。对不同棕榈油含量的棕榈油改性纤维素粉进行配伍试验、红外光谱和热重分析。纤维素粉与棕榈油之间酯桥的红外吸收峰随着纤维素粉附着棕榈油含量的增加而增加。采用熔融共混后模压成型的方法制备了原始或改性纤维素粉末的PP/纤维素(80/20重量比)复合材料。通过冲击和拉伸试验测定了复合材料的力学性能。随着棕榈油含量的增加，抗冲击强度、断裂伸长率和抗水性能均有所提高，但拉伸模量有所降低。当棕榈油质量分数为4.87 wt.%时，复合材料的拉伸性能最佳。SEM图像表明，棕榈油对纤维素粉进行改性，增强了纤维素粉与PP基体之间的界面结合。

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来源期刊

Polymers & Polymer Composites 工程技术-材料科学：表征与测试

CiteScore

4.30

自引率

9.50%

发文量

审稿时长

5.7 months

期刊介绍： Polymers & Polymer Composites provides a forum for the publication of expertly peer reviewed, international research into the following topics: - Fibre reinforced and particulate filled plastics - Engineering plastics - Nanocomposites - Polymers or polyblends intended for engineering use (including structural, load bearing electronic and electrical applications) - Fibre reinforced and particulate filled plastics - Structural adhesives - Textile & wood fibres - Biomaterials with a load bearing capacity, (including polymer based dental materials)