Electrical Properties of Bamboo Fiber Reinforced Polypropylene Composite: Effect of Coupling Agent

ABSTRACT

Electrical properties of blends from Polypropylene (PP) and bamboo fiber have been studied at various amounts of fiber compositions. Blending of bamboo with nonpolar polymer such as PP is expected to improve the dielectric performance of bamboo fiber by reducing the polarity. This paper presents the results of dielectric properties of bamboo fiber-reinforced PP composites. Special attention has been paid to analyze the influence of coupling agent (Maleic Anhydride Polypropylene) on the dielectric properties of the resulting composites. The temperature dependence of dielectric properties on the composites has also been studied. Capacitance (C), dielectric loss or tan δ (D), Impedance (Z) and conductivity (G) with frequency were measured at different temperatures. Polypropylene has a major role on environmental pollution as it is not biodegradable. So, this study aims to use such polymers to be incorporated with bamboo fiber to achieve high dielectric constant with low loss in polymer composites for embedded capacitor applications. Polypropylene is used as a host matrix due to its higher mechanical strength and ease of processing at low temperature.

摘要

研究了聚丙烯（PP）与竹纤维共混物在不同纤维组成下的电学性能. 将竹纤维与非极性聚合物（如PP）共混，可以降低竹纤维的极性，从而提高竹纤维的介电性能. 本文研究了竹纤维增强聚丙烯复合材料的介电性能. 着重分析了偶联剂（马来酸酐-聚丙烯）对复合材料介电性能的影响. 研究了复合材料介电性能与温度的关系. 在不同温度下测量了电容（C）、介电损耗或tanδ（D）、阻抗（Z）和电导（G）随频率的变化. 聚丙烯不可生物降解，对环境污染有很大的影响. 因此，本研究的目的是将这些聚合物与竹纤维复合，以达到高介电常数和低损耗的聚合物复合材料在嵌入式电容器中的应用. 聚丙烯因其较高的机械强度和易于低温加工而被用作基质.

KEYWORDS:

• Polypropylene
• composites
• electrical Properties
• coupling Agent

Acknowledgments

The authors would like to thank the Management and the Principal of Global Academy of technology for constant encouragement and the Director, Institute of Wood Science & Technology, Malleshwaram, 18th cross, Bangalore for the lab facility in carrying out the research work. The authors also thank the Head of the Department of Physics, Ambedkar College of engineering, Bangalore for providing the lab facility in carrying out the electrical characterization of these composites.