Pyrolysis Characteristics of Tire Rubber at Low Temperatures.

ABSTRACT: Pyrolysis of used tires is a promising method for recovering valuable chemicals. However, the conventional high-temperature pyrolysis of natural rubber (polyisoprene)-based tires suffers from a low-selective isoprene recovery, heavy carbon black (CB) damage, and coke formation on the CB. In this paper, we report on characteristics of the low-temperature pyrolysis of CB-containing polyisoprene-based tire rubber that is vulcanized with sulfur. The low-temperature pyrolysis of the tire rubber cleaves the main chain and cross-linking bonds, which allows for the recovery of low-molecular-weight tire rubbers, tire rubber dissolution into the solvent, and CB isolation from the rubber matrix. The maximum liquid rubber recovery rate was 76.7% after 1 h of heating at 282 °C. In addition, the molecul

SUBMITTER: Awosu E 

PROVIDER: S-EPMC11886908 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature