Fabrication of High Performance Magnetic Rubber from NBR and Fe₃O₄via in Situ Compatibilization with Zinc Dimethacrylate

Abstract

Fe 3 O 4 -based magnetic rubbers are desirable because they take advantage of high elasticity, large elongations, and high magnetic saturation intensity of each component. However, direct compounding of rubbers and Fe 3 O 4 usually resulted in low mechanical properties which made the magnetic rubbers unable to satisfy practical applications. In this paper, we prepared nitrile butadiene rubber (NBR)/Fe 3 O 4 -based magnetic rubbers with good mechanical properties by means of in situ compatibilization using zinc dimethacrylate (ZDMA). Our strategy was based on the polymerization of ZDMA during a peroxide-induced vulcanization, in which the polymerized ZDMA (PZDMA) brought massive Zn 2+ ion pairs into NBR. Zn 2+ ion pairs not only increased the polarity of NBR but also strongly interacted with Fe 3 O 4 nanoparticles. Because of the graf t-PZDMA, the Zn 2+ ion pairs finally strengthened interactions between Fe 3 O 4 nanoparticles and NBR molecules. We hope this report laid an applied foundation for design of high performance magnetic rubbers to satisfy the various potential applications.

In situ latex synthesis of magnetic polymer nanocomposites for application in magnetorheological materials

“…The enhanced elastic modulus mainly came from the interactions between Fe 3 O 4 nanoparticles and NR chains . The increase in the content of Fe 3 O 4 nanoparticles improved interfacial interactions between Fe 3 O 4 nanoparticles and NR, which restricted the motion of rubber chains . These results further indicated formation of magnetic polymer nanocomposites with good dispersion, resulting in the improvement of good mechanical properties.…”

Shape memory properties of dynamically vulcanized poly(lactic acid)/nitrile butadiene rubber (PLA/NBR) thermoplastic vulcanizates: The effect of ACN content in NBR

“…The absorption peaks at 1760 cm −1 were attributed to the stretching vibration of carbonyl groups (C═O) in the PLA . The absorption peak at 2238 cm −1 was attributed to the stretching vibration of cyano groups (C ≡ N) of unsaturated NBR . The spectra of the residues of the PLA/NBR TPVs was quite similar to that of NBR, which revealed that the free PLA and uncross‐linked NBR had already been eliminated completely after DCM extraction for 72 hours.…”

Effects of the degree of crosslinking and test rate on the tensile properties of a crosslinked polyacrylic pressure‐sensitive adhesive and vulcanized rubber

“…However, in actuality, the plotted line will exhibit a small positive gradient and the data points will deviate from a straight line at both large and small values of 1/ λ . Recently, the Mooney–Rivlin plot technique has been widely applied to substances ranging from hydrogels to inorganic particle‐filled rubber composites . The degree of orientation of polymer chains and the Payne effect during tensile processes can both be evaluated by assessing the deviation from the straight line in the large and small 1/ λ regions, respectively.…”

“…Recently, the Mooney–Rivlin plot technique has been widely applied to substances ranging from hydrogels to inorganic particle‐filled rubber composites . The degree of orientation of polymer chains and the Payne effect during tensile processes can both be evaluated by assessing the deviation from the straight line in the large and small 1/ λ regions, respectively. In the present work, Mooney–Rivlin plots were generated for both the vulcanized IR and crosslinked PSA.…”