Dynamically vulcanized polylactic acid/natural rubber/waste rubber blends: Effect of the crosslinking agent on the morphology and tensile properties. Issue 41 (10th August 2022)

• Record Type: Journal Article
• Authors: Candau, Nicolas; Albiter, Noel León; Coll, Pol Roura; Maspoch, Maria Lluïsa
• Is Part Of: Journal of applied polymer science. Volume 139:Issue 41(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-10
• Subjects: biopolymers and renewable polymers -- elastomers -- mechanical properties -- microscopy -- swelling; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.53001
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: PLA/natural rubber (NR)/wastes tire rubber (GTR) were dynamically vulcanizing using dicumyl peroxide (DCP). Swelling, dissolution, and electron microscopy revealed that the unvulcanized and weekly vulcanized blends (DCP < 3 wt%) show a continuous rubber phase while the highly vulcanized blends (DCP > 3 wt%) show co‐continuous rubber/PLA phase. In the latter blends, the tensile toughness (1.3 MJ m −3 ) and the tensile‐impact strength of the neat PLA (58 kJ m −2 ) were increased of a factor 12.5 and 8.3 respectively. Moreover, the appropriate crosslinking agent content (3–3.75 wt%) in the ternary blends allowed to reach same tensile toughness, impact strength, shape recovery and shape fixity as compared to their equivalent binary PLA/NR blends. Abstract :