2024/02/14 by Patcharapon Somdee, Natkrita Prasoetsopha, Saksan Detsunhnoen +2
Materials Science · #Advanced Cellulose Research Studies #Natural Fiber Reinforced Composites #Polymer Foaming and Composites
paper · pdf · doi:10.1002/star.202300300
crossref issued 2024/02/14 · crossref published 2024/02/14 · crossref published-online 2024/02/14 · openalex publication_date 2024/02/14 · crossref created 2024/02/15 · crossref published-print 2024/07/01 · crossref deposited 2024/07/04 · openalex created_date 2025/10/10 · crossref indexed 2026/07/31 · openalex updated_date 2026/08/01
Abstract This research aims to enhance natural rubber (NR) properties by incorporating spent coffee grounds (SCGs). Scanning electron microscope (SEM) reveals well‐dispersed SCG particles in the NR matrix without interaction. Shore A hardness notably increases by up to 49.90 (19% higher than unmodified), but tensile and tear strength decline with higher SCG levels. Optimal tear strength occurs at 10 phr of SCG due to uniform dispersion. The 300% modulus remains unchanged. The odor of composites (CO 2 absorption) sees a 69.2% increase at 25 phr, while odor absorption efficiency peaks at 2%. Additionally, unmodified SCG affects scorch time (2.12%–23.40% increase from 1 to 20 phr) and cure time (3.12% to 76.82% improvement from 1 to 20 phr). These findings showcase improved hardness, enhanced CO 2 absorption capacity, and effective odor control. Additionally, this study sheds light on the influence of SCG on processing times, contributing valuable insights for eco‐friendly applications.