4.7 Article

Viable Properties of Natural Rubber/Halloysite Nanotubes Composites Affected by Various Silanes

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POLYMERS
卷 15, 期 1, 页码 -

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MDPI
DOI: 10.3390/polym15010029

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natural rubber; halloysite nanotubes; silane; wide-angle X-Ray scattering

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Natural rubber (NR) is incompatible with hydrophilic additives, but the addition of silane coupling agents greatly improves the properties of NR/HNT composites, including modulus, tensile strength, and tear strength. Among the four different silanes tested, AEAPTMS is found to be the most viable choice. The strain-induced crystallization (SIC) of the composites is substantially aided by the corresponding silanes.
Natural rubber (NR) is incompatible with hydrophilic additives like halloysite nanotubes (HNT) due to their different polarity. The silane coupling agent is the ideal component to include in such a compound to solve this problem. Many types of silane are available for polymer composites depending on their functionalities. This work aimed to tune it to the composite based on NR and HNT. Four different silanes, namely Bis[3- (Triethoxysilyl)Propyl]Tetrasulfide (TESPT), 3-Aminopropyl triethoxysilane (APTES), N-[3-(Trimethoxysilyl)Propyl] Ethylenediamine (AEAPTMS), and Vinyltrimethoxysilane (VTMS) were used. Here, the mechanical properties were used to assess the properties, paying close attention to how their reinforcement influenced their crystallization behavior after stretching. It was revealed that adding silane coupling agents greatly improved the composites' modulus, tensile strength, and tear strength. From the overall findings, AEAPTMS was viable for NR/HNT composites. This was in direct agreement with the interactions between NR and HNT that silanes had encouraged. The findings from stress-strain curves describing the crystallization of the composites are in good agreement with the findings from synchrotron wide-angle X-ray scattering (WAXS). The corresponding silanes have substantially aided the strain-induced crystallization (SIC) of composites.

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