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The present study deals with the extraction and characterization of untreated and silane-treated natural fibers from stems of  Psidium guajava  (Guava plants) for automobile brake pad applications. The extraction of fibers was done from the  Psidium guajava  plant stems by the retting process followed by silane treatment. The untreated and silane-treated  Psidium guajava  fibers were analyzed for chemical, physical, and crystalline properties. These fibers were used in the brake pad composite developed using conventional industrial processes and analyzed for various performance characteristics as per industrial standards. The tribological performance of the developed brake pads was measured using the Chase test following IS 2742 Part-4 of 1994 or SAE J661:2012. It was found that silane-treated  Psidium guajava  fibers had acrystalline index of 42%, while it was 27% for untreated  Psidium guajava  fibers. The brake pads developed using silane-treated  Psidium guajava  fibers showed ahigher hardness of 99, while it was 90 for untreated  Psidium guajava  fibers proving better results upon the usage of silane-treated  Psidium guajava  fibers in brake pads. Scanning Electron Microscope studies of Chase tested brake pads that elucidated the plateau formations and back transfers.

Sustainable Characterization of Silane Treated and Untreated Psidium Guajava Stem Natural Fibers Based Automobile Brake Pads