Filled Elastomers: Characteristics and Properties of Interfaces and Interphases, and Their Role in Reinforcement Processes

Vidal, A.; Haidar, B.

doi:10.1080/15394450701554650

Cited by 16 publications

(13 citation statements)

References 14 publications

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“…Silica has been used in polymeric compounds as an effective reinforcing agent. 23,24 Much effort has been made to fabricate polymer/silica nanocomposites by in situ synthesis. 25,26 However, the fabrication of silica particles in soy protein matrix has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Processing and properties of soy protein/silica nanocomposites fabricated in situ synthesis

Tian

2011

Journal of Composite Materials

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Nanocomposite materials were prepared via glycerol plasticized soy protein as the matrix and in situ fabricated silica as thereinforcing phase. The silica nanoparticles were synthesized in the protein environment by sodium silicate as a precursor. The resulting composites were characterized by Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), tensile tests, and thermogravimetric analysis (TGA). The results revealed that silica particles were homogeneously dispersed in soy protein matrix at a nanometer scale with low silica addition (lower than 15%). Silica particles exhibited a high adhesion with protein matrix through hydrogen bonding and confined the motions of soy protein segments. The incorporation of silica as a reinforcing agent significantly improved the mechanical properties and thermal stability of soy protein plastics.

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Section: Introductionmentioning

confidence: 99%

Processing and properties of soy protein/silica nanocomposites fabricated in situ synthesis

Tian

2011

Journal of Composite Materials

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“…Prior research indicated that the differential heat capacity (Δ c p ) is directly proportional to the amount of the polymer that undergoes this transition [32]. Thus, the filled vulcanizates demonstrate a lower Δ c p value, as compared to the unfilled sample.…”

Section: Resultsmentioning

confidence: 99%

Effect of Zinc Oxide Modified Silica Particles on the Molecular Dynamics of Carboxylated Acrylonitrile-Butadiene Rubber Composites

et al. 2017

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This work examines the molecular dynamics of carboxylated acrylonitrile-butadiene rubber crosslinked with zinc oxide modified silica particles. ZnO/SiO 2 with the wide range of ZnO concentrations were used as both a crosslinking agent and filler. A series of thermal measurements were applied to the characterization of the samples: differential scanning calorimetry, dynamical mechanical thermal analysis, and dielectric relaxation spectroscopy. A complementary experimental technique, which is equilibrium swelling in solvents, confirms the presence of ionic crosslinks, which are created between zinc ions and the functional carboxyl groups of the rubber, within the structure of the vulcanizates. These interactions influenced not only the affinity of the vulcanizates to solvents, but also their dynamic mechanical and dielectric properties. In these investigations, the influence of concentration of ZnO on the surface of the ZnO/SiO 2 on the properties of the vulcanizates are described.

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“…Higher amount of immobilized rubber with restricted mobility was formed on the filler surface even before the ionic curing of rubber. Prior research [39] indicated that the differential heat capacity (Δc p ) is directly proportional to the amount of the polymer that undergoes this transition. The results reported in Table 2 indicated that the values of the heat capacity Δc p of the investigated samples containing MG fillers decreased slightly with the increase in magnesium amount in filler structure.…”

Section: The Influence Of Mg Filler Characteristic On Curing At Variomentioning

confidence: 99%

Curing kinetics and ionic interactions in layered double hydroxides–nitrile rubber Mg–Al-LDHs–XNBR composites

2020

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The carboxylated butadiene-acrylonitrile XNBR composites containing layered double hydroxides (Mg-Al-LDHs) were prepared with the aim to investigate the effect of various Mg:Al ratio in the filler composition on the rheological behavior, kinetic of curing and viscoelastic properties of final material. Due to the presence of metal cations, LDHs can form ionic cross-links with carboxylic functional groups of XNBR nitrile rubber. The DSC analysis indicated lower ranges of curing temperatures as the Mg:Al ratio raised (90-184 °C for Pural MG63, 88-187 °C for Pural MG70). The apparent energy of activation E a decreased with increasing Mg:Al ratio reaching the value of 111.46 kJˑmole −1 for XNBR composite containing Pural MG70. The rheological analysis revealed the presence of specific polymer-nanofillers and fillers-fillers interactions. The XNBR-LDHs rubbers exhibited two transitions corresponding to the glass temperature of elastomer T g (in range of −13.08 to −13.60 °C) and the ionic transition temperature T α′ (in range of 32.95-37.90 °C). The ionic transition temperature T α′ was not observed for the nitrile rubber composite containing Pural MG5 with the lowest Mg:Al ratio. The formed ordered ionic phase significantly affected the viscoelastic behavior of XNBR composites at room and sub-zero temperatures leading to the increase in the storage modulus G ′. Therefore, among the various possible applications of LDHs, their use in rubber technology offers the potential for production of environmentally friendly rubber products cured without any additional curatives.

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Filled Elastomers: Characteristics and Properties of Interfaces and Interphases, and Their Role in Reinforcement Processes

Cited by 16 publications

References 14 publications

Processing and properties of soy protein/silica nanocomposites fabricated in situ synthesis

Processing and properties of soy protein/silica nanocomposites fabricated in situ synthesis

Effect of Zinc Oxide Modified Silica Particles on the Molecular Dynamics of Carboxylated Acrylonitrile-Butadiene Rubber Composites

Curing kinetics and ionic interactions in layered double hydroxides–nitrile rubber Mg–Al-LDHs–XNBR composites

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