**5. Sisal fibre-based polymer composites and their applications**

#### **5.1 Electrical application of sisal fibre**

In request to use sisal fibre for electrical applications, a few analysts have considered distinctive electrical properties of sisal fibre at various temperatures and frequencies. Expanding the plant age moves the dissemination factor (tan d) top to higher temperature. Further, the wonders were clarified based on primary

*Sisal Fibre Based Polymeric Composites DOI: http://dx.doi.org/10.5772/intechopen.101107*

charges. Water consumed by sisal fibres has OH anions that go about as dipoles. Other than OH anions, there are a few pollutants and particles on the fibres. At high frequencies, the commitment of polarization of assimilated water particles and space charge diminishes and electronic and nuclear polarization becomes employable. Expansion in temperature influences the portability of particles and subsequently changes the ionic commitments [13, 14]. The electrical properties of sisal fibre built-up LDPE have been concentrated as for the impacts of recurrence, fibre content and fibre length. The dielectric constant increases consistently with expanding fibre concentration for all frequencies in reaching 1–107 Hz. Similarly it is noted that dielectric consistent declines on an increment in fibre length and recurrence. Greatest dielectric consistent qualities are obtained at low frequencies. Sisal/LDPE composites of 1 mm fibre length and 30% fibre concentration contain the most noteworthy upsides of dielectric constants at all frequencies. The upsides of volume receptiveness decline on an increment of recurrence and fibre concentration; that is, the electric conductivity of composites is more prominent than slick LDPE. When contrasted with glass/LDPE composites, similar pattern in electrical properties is noticed; however, the charges of dielectric constants of the last composites on recurrence and fibre concentration are more modest because of their lower interfacial polarization [2–4, 22].
