An advanced elastomer with an unprecedented combination of excellent mechanical properties and high self-healing capability

Abstract

An advanced elastomer was developed by incorporating a dual-dynamic network into cis-polyisoprene, which combines excellent mechanical properties with high self-healing capability.

Shape memory and self‐healing behavior of styrene–butadiene–styrene/ethylene‐methacrylic acid copolymer (SBS/EMAA) elastomers containing ionic interactions

“…When some nitrogen‐containing compounds, such as alkylimidazoles, 4‐ethyl‐4‐methyl morpholinium methylcarbonate, and 2‐(dimethyl amino)‐ethyl methacrylate were introduced into poly(isobutylene‐co‐isoprene) rubber or acrylate rubber, excellent mechanical and self‐healing performance were obtained, for example, a healed tensile strength of 10.7 MPa (healing efficiency of 74%) and a elongation at break of 1040% (healing efficiency of 98%) . In addition to forming an ionic crosslinking network, metal ions can also be utilized to form supramolecular networks through metal–ligand interactions in rubber matrix.…”

Towards a Supertough Thermoplastic Polyisoprene Elastomer Based on a Biomimic Strategy

“…Typical thermoplastic rubber such as SBS does not possess the self‐reinforcement properties. Rubber with a dual‐dynamic network design was made by Guo and his co‐workers to achieve high mechanical performance with self‐healing capability, but the SIC peaks were weak even at high strain. A recently developed vitrimer with dynamic covalent networks is still in its infant stage, with much lower mechanical performance than vulcanized natural rubber .…”

Towards a Supertough Thermoplastic Polyisoprene Elastomer Based on a Biomimic Strategy

“…[1][2][3] Although synthetic polyisoprene possesses similar main chain structure with natural rubber,i ts performance such as raw rubber strength, anti-fatigue and SIC properties of vulcanized form still lag behind of natural rubber. To solve this problem, malleable materials such as thermoplastic rubbers or thermosets with covalent dynamic networks [7] could be alternative options.T ypical thermoplastic rubber such as SBS does not possess the self-reinforcement properties.R ubber with ad ual-dynamic network design was made by Guo and his co-workers to achieve high mechanical performance with self-healing capability, [8] but the SIC peaks were weak even at high strain. [5] Ty pically,the w-terminal of natural rubber consists of non-covalently connected proteins and a-terminal consists of phospholipids.Each polar terminal contributed to mechanical performance with specific way.…”

“…To solve this problem, malleable materials such as thermoplastic rubbers or thermosets with covalent dynamic networks [7] could be alternative options.T ypical thermoplastic rubber such as SBS does not possess the self-reinforcement properties.R ubber with ad ual-dynamic network design was made by Guo and his co-workers to achieve high mechanical performance with self-healing capability, [8] but the SIC peaks were weak even at high strain. To solve this problem, malleable materials such as thermoplastic rubbers or thermosets with covalent dynamic networks [7] could be alternative options.T ypical thermoplastic rubber such as SBS does not possess the self-reinforcement properties.R ubber with ad ual-dynamic network design was made by Guo and his co-workers to achieve high mechanical performance with self-healing capability, [8] but the SIC peaks were weak even at high strain.…”

“…However, this approach is rarely adopted mainly due to lack of suitable synthetic methods.A nd successful mimic of terminal struc-ture and functionality of natural rubber will deepen our understanding on high performance diene rubbers.In the meantime,r ecyclability is also very important for rubber usage.Ahuge amount of vulcanized rubbers are buried or incinerated because of inefficient recycling techniques,not only resulting in waste but also pollution. To solve this problem, malleable materials such as thermoplastic rubbers or thermosets with covalent dynamic networks [7] could be alternative options.T ypical thermoplastic rubber such as SBS does not possess the self-reinforcement properties.R ubber with ad ual-dynamic network design was made by Guo and his co-workers to achieve high mechanical performance with self-healing capability, [8] but the SIC peaks were weak even at high strain. Arecently developed vitrimer with dynamic covalent networks is still in its infant stage,with much lower mechanical performance than vulcanized natural rubber.…”