Achieving high elasticity of trans-1,4-polyisoprene with a combination of radiation crosslinking and thiol–ene grafting

Abstract

The mechanical properties of semicrystalline polymers are closely related to crystallization. For trans-1,4-polyisoprene (TPI), to explore the possibility of applications as elastomers, crystallization must be suppressed. Previous studies have shown...

Synthesis, Properties and Adsorption Kinetic Study of New Cross-Linked Composite Materials Based on Polyethylene Glycol Polyrotaxane and Polyisoprene/Semi-Rotaxane

“…The diffractogram of the composite material 2 , containing 5 wt% of PI/HPβCD SR in the matrix, exhibits the same amorphous halo with the peaks in the low-angle regions at 2θ = 12.22° and 22.7°, respectively; they also correlated to the disordered packing of HPβCD and short-range order of uncovered PEG segments [ 31 ]. The peaks corresponding to the PI polymer are overlapped with the ones from the PEG matrix [ 17 , 32 , 33 ]. In contrast, the diffraction pattern of the composite material 3 , containing 10 wt% of PI/HPβCD, exhibits more intense peaks at 2θ = 19.32° and 23.53°, respectively.…”

“…Conversely, the composite materials exhibited only two exothermic signals attributed to crystallization processes at −36 • C (C p = 0.41 J g −1 ) and 20 • C (C p = 9.79 J g −1 ) for the composite material 2; in the case of the composite material 3, it was at −32 • C (C p = 1.05 J g −1 ) and 26 • C (C p = 18.52 J g −1 ), which can be attributed to the PEG crystalline domain and also to the presence of PI/HPβCD SR in the cross-linked matrix. It is well known that the PI polymer has good flexibility but in the cross-linked systems at room temperature, it gains plastic properties [33]. PI polymer has good flexibility but in the cross-linked systems at room temperature, it gains plastic properties [33].…”

“…It is well known that the PI polymer has good flexibility but in the cross-linked systems at room temperature, it gains plastic properties [33]. PI polymer has good flexibility but in the cross-linked systems at room temperature, it gains plastic properties [33].…”

An electron beam irradiation-assisted coating method for the regulation of hydrophilicity and hydrophobicity

“…27 An appropriate energy electron beam can initiate the desired radical reactions, leading to molecular cross-linking, grafting, 28,29 and alteration of the material properties. 30 The pioneering thiol-ene reaction, triggered by electron beams, modifies fibers and films, 31,32 enabling surface property alterations across various materials. Simultaneously, the in situ curing of PDMS by electron beams is primer-free and rapid, and exhibits loadable characteristics.…”