He, Y.; Xu, R.; Zhang, R.; Wang, C. C.; Li, S. Q.; Cao, J.; Tang, M. Z.; Xu, Y. X. Promoted comprehensive properties of polyisoprene rubber with extremely high fatigue resistance enabled by oligopeptide aggregates. Chinese J. Polym. Sci. 2023, 41, 1250–1260
Yu He, Ran Xu, Rong Zhang, et al. Promoted Comprehensive Properties of Polyisoprene Rubber with Extremely High Fatigue Resistance Enabled by Oligopeptide Aggregates[J]. Chinese Journal of Polymer Science, 2023, 41(8): 1250-1260.
He, Y.; Xu, R.; Zhang, R.; Wang, C. C.; Li, S. Q.; Cao, J.; Tang, M. Z.; Xu, Y. X. Promoted comprehensive properties of polyisoprene rubber with extremely high fatigue resistance enabled by oligopeptide aggregates. Chinese J. Polym. Sci. 2023, 41, 1250–1260DOI: 10.1007/s10118-023-2933-3.
Yu He, Ran Xu, Rong Zhang, et al. Promoted Comprehensive Properties of Polyisoprene Rubber with Extremely High Fatigue Resistance Enabled by Oligopeptide Aggregates[J]. Chinese Journal of Polymer Science, 2023, 41(8): 1250-1260.DOI: 10.1007/s10118-023-2933-3.
Promoted Comprehensive Properties of Polyisoprene Rubber with Extremely High Fatigue Resistance Enabled by Oligopeptide Aggregates
the preparation of polyisoprene rubber that can match the comprehensive properties of natural rubber (NR) has been pursued. While sacrificial bonds have been used to promote the strength and toughness of rubbers
little is known about their effects on fatigue resistance
which is important in dynamic environments. Herein
terminal block and randomly functionalized polyisoprene rubbers tethered with di-alanine
tri-alanine and tetra-alanine were prepared. The results showed that the flow activation energy
aggregates ordering and energy dissipation of the hydrogen-bonded aggregates increase with the elongation of oligopeptide length (
X
A
X
=2
3
4)
therefore resulting in enhanced mechanical strength and toughness of corresponding samples. Comparably
the tear strengths are barely affected by oligopeptide lengths in block samples
but promoted from dipeptide to tetrapeptide in random samples
probably due to the well dispersed oligopeptide aggregates. Most importantly
it is found that the tight binding aggregates of oligopeptides are critical for the excellent fatigue resistance
which is absent in polyisoprene and natural rubber. The loose aggregates dissociate and recombine repeatedly under cyclic loading and the tight aggregates keep the network integrated and robust. Interestingly
the largest hysteresis of PIP-4A-V with the longest oligopeptide length give the lowest heat generation
which is contrary to the traditional sacrificial bonds. Overall
the oligopeptide aggregates have repeatable energy dissipation properties and cycle life comparable to or even surpassing those of the linked proteins in NR
resulting in similar tensile strength
fracture toughness
and better fatigue resistance relative to NR. This deep insight on the role of oligopeptide aggregates is very useful for the engineering rubbers served in dynamic environments.
Liu,J.;Liu,J.;Wang,S.;Huang,J.;Wu,S.;Tang,Z.;Guo,B.;Zhang,L.Anadvancedelastomerwithanunprecedentedcombinationofexcellentmechanicalpropertiesandhighself-healingcapability. J. Mater. Chem. A 2017 , 5 ,25660−25671..
Bevilacqua,E.Structureofnaturalrubber. J. Polym. Sci. Polym. Lett. Ed. 1967 , 5 ,601−601..
Eng,A.H.;Tanaka,Y. Structure of Natural Rubber .NIPPONGOMUKYOKAISHI, 1993 ..
Squaramide-directed Cooperative One-dimensional Assembly in Telechelic Polydimethylsiloxane for Hierarchical Network Formation
Regulation of Microphase Separation in Bio-based Thermoplastic Polyurethanes Driven by Hard Segment Content
Hydrogen Bonding in Gel Polymer Electrolyte Enables High Performance High-mass-loading Silicon Anode
Anti-biofouling Hydrogels: Surface Hydration, Classification, and Biomedical Applications
Polarity-regulated Nano-silica Steering Carbon Black Network Evolution and Reconfiguration in Conductive Silicone Elastomers: Experimental and Molecular Simulations
Related Author
Yu-Hong Zhang
Jian-Fei Ma
Hao-Bo Wei
Jie Wang
Feng Wang
De-Xian Yin
Yu-Qiong Hu
Ya-Nan Cheng
Related Institution
School of Chemistry and Pharmaceutical Engineering, Jilin University of Chemical Technology
Department of Polymer Science and Engineering, University of Science and Technology of China
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
School of Materials Science and Engineering, State Key Laboratory of Advanced Materials for Intelligent Sensing, Tianjin University
School of Energy (National Industry-Education Platform for Energy Storage), Tianjin University