Effect of Filler Content of Chemically Treated Short Bagasse Fiber-Reinforced Cardanol Polymer Composites

ABSTRACT

In this work, the sugarcane bagasse fiber was used as a filler to make a new type of biodegradable composite, using the cardanol resin, as a fully biodegradable thermosetting polymer matrix. Biocomposite performance was improved by chemically modified bagasse fiber using alkaline treatment. Two sets of composites were prepared with a fiber length of 10 and 20 mm with various weight percentages viz., 0, 5, 10, 15, and 20 of cardanol resin using a compression molding machine. The mechanical properties were studied using some tests and the morphological study in flexural fractured specimens was carried out using SEM. The thermal properties of biodegradable polymer composites were evaluated using TGA. The chemical formation of the new biocomposites was also examined by the FT-IR spectroscopy technique. The result proved that the morphology of the composites has improved the bonding between the fiber and resin, thus leading to enhancement of the mechanical properties. The result had shown the tensile and flexural strength with an increase in the range of bagasse fiber up to 15 wt% in both the sets. The TGA results showed that biocomposites of 15 wt% in both sets had the highest thermal stability. This investigation recommended the possibility of introducing bio-fiber obtained from waste agricultural residues in polymer matrix composites.

摘要

在这项工作中，甘蔗蔗渣纤维作为填料，使一个新的可生物降解的复合型，利用腰果酚树脂，作为完全生物降解热固性聚合物基。碱改性蔗渣纤维改善生物复合材料性能。与纤维长度10毫米和20毫米的不同重量百分比即制备两套复合材料，0, 5, 10，15和20的腰果酚树脂的压缩成型机。通过试验研究了弯曲断裂试样的力学性能，并利用扫描电镜对弯曲断裂试样进行了形态学研究。用TGA对可生物降解聚合物复合材料的热性能进行了评价。用FT-IR光谱技术研究了新型生物复合材料的化学组成。结果表明，复合材料的形态改善了纤维与树脂的结合，从而提高了材料的力学性能。结果表明，蔗渣纤维的拉伸强度和弯曲强度均随蔗渣纤维含量的增加而增加到15。热重分析结果表明，两种组分中15重量%的生物复合材料的热稳定性最高。本研究推荐了利用废弃农业废弃物在聚合物基复合材料中引入生物纤维的可能性。

KEYWORDS:

• Natural fiber/matrix bond
• biocomposites
• cardanol resin
• mechanical properties
• thermal properties

关键词:

• 天然纤维/基体结合
• 生物复合材料
• 腰果酚树脂
• 力学性能
• 热性能。