Dynamically vulcanized polylactic acid/natural rubber/waste rubber blends: Effect of the crosslinking agent on the morphology and tensile properties

被引：15

作者：

Candau, Nicolas ^{[1
]}

Leon Albiter, Noel ^{[1
]}

Roura Coll, Pol ^{[1
]}

Lluisa Maspoch, Maria ^{[1
]}

机构：

[1] Univ Politecn Cataluna, Ctr Catala Plast, Dept Ciencia & Engn Mat, Barcelonatech, Avda Eduard Maristany 16, Barcelona 08019, Spain

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2022年 / 139卷 / 41期

基金：

欧盟地平线“2020”;

关键词：

biopolymers and renewable polymers; elastomers; mechanical properties; microscopy; swelling; STRAIN-INDUCED CRYSTALLIZATION; NATURAL-RUBBER; THERMOPLASTIC ELASTOMERS; BALANCED STIFFNESS; SUPER-TOUGH; BEHAVIOR; PHASE; KINETICS; DENSITY; NR;

D O I：

10.1002/app.53001

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页数：12

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