UTILIZATION OF KRAFT LIGNIN AS REPLACEMENT FOR RESIN, CARBON BLACK, AND FILLER ADDITIVE IN TREAD VULCANIZATE OF PCR TIRE

• Main Author: Aditya Putra, Daniel
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/21562
• Institution: Institut Teknologi Bandung

Lignin is the second most abundant polymer in the world, which can be found in plants. Currently, lignin is widely used for various applications, one of which is as an additive material in tire. Lignin can be incorporated as filler in tread component to reduce the rolling resistance of tire. Tread is a tire component that has direct contact with the road, which requires good rolling resistance properties. In addition to rolling resistance, several important properties of tread are mechanical properties (hardness, modulus, tensile, elongation), abrasion resistance, friction, and heat build up. Not only as filler, lignin also has the potential to be used as resin to improve processability as well as tire mechanical properties. <br /> In this research, replacement of filler (carbon black and filler additive) and resin with lignin was conducted in tread component of standard PCR tire from PT Multistrada Arah Sarana, Tbk. The lignin used in this research was kraft softwood and hardwood lignin. Lignin was initially characterized by dynamic light scattering (DLS) to determine the size of lignin particles, since particle size can affect the strengthening effect of the filler. Tire compounds were made using Banbury mixer and the processing properties of compounds (viscosity, scorch time, cure time) were tested using Rheometer. Compounds were then vulcanized and tested to determine the mechanical properties (hardness, modulus, tensile, elongation), Payne effect, and dynamic properties (abrasion resistance, friction, heat build up, rolling resistance) of vulcanizates. Replacement of filler with lignin result in lower mechanical properties, abrasion resistance, and friction compared to vulcanizate with carbon black and filler additive, while the rolling resistance and heat build up properties showed improvement. Replacement of resin with lignin result in lower processability, tensile strength, elongation, abrasion resistance, and friction; while the modulus 300, rolling resistance, and heat build up properties improved. <br />