Conducting polyaniline based rubber nanocomposites – Synthesis and characterization studies

Mahitha, P.M.; Sneha, K.; Advaith, P.S.; Sultan, K. Rashid; Sajith, Malavika; Jose, Burney; Sambhudevan, Sreedha; Shankar, Balakrishnan

doi:10.1016/j.matpr.2020.07.705

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Synthesis at a low temperature (0 • C) is the most common approach, as used in a few studies in the literature. Numerous other sources apply synthesis at ambient temperature or 25 • C [36,37]. Effective temperature control was achieved using minimal exposure to the open area and an insulated container at 0 • C, while the temperature of the water bath was set at 25 • C. The effect on particle size was studied and will be discussed later in this paper.…”

Section: Synthesis Temperaturementioning

confidence: 99%

Synthesis and Characterization of a Novel Nanosized Polyaniline

Banjar,

Joynal Abedin,

Fizal

et al. 2023

Polymers

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Polyaniline (PANI) is a conductive polymer easily converted into a conducting state. However, its limited mechanical properties have generated interest in fabricating PANI composites with other polymeric materials. In this study, a PANI–prevulcanized latex composite film was synthesized and fabricated in two phases following chronological steps. The first phase determined the following optimum parameters for synthesizing nanosized PANI, which were as follows: an initial molar ratio of 1, a stirring speed of 600 rpm, a synthesis temperature of 25 °C, purification via filtration, and washing using dopant acid, acetone, and distilled water. The use of a nonionic surfactant, Triton X-100, at 0.1% concentration favored PANI formation in a smaller particle size of approximately 600 nm and good dispersibility over seven days of observation compared to the use of anionic sodium dodecyl sulfate. Ultraviolet–visible spectroscopy (UV-Vis) showed that the PANI synthesized using a surfactant was in the emeraldine base form, as the washing process tends to decrease the doping level in the PANI backbone. Our scanning electron microscopy analysis showed that the optimized synthesis parameters produced colloidal PANI with an average particle size of 695 nm. This higher aspect ratio explained the higher conductivity of nanosized PANI compared to micron-sized PANI. Following the chronological steps to determine the optimal parameters produced a nanosized PANI powder. The nanosized PANI had higher conductivity than the micron-sized PANI because of its higher aspect ratio. When PANI is synthesized in smaller particle sizes, it has higher conductivity. Atomic force microscopy analysis showed that the current flow is higher across a 5 µm2 scanned area of nanosized PANI because it has a larger surface area. Thus, more sites for the current to flow through were present on the nanosized PANI particles.

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Section: Synthesis Temperaturementioning

confidence: 99%

Synthesis and Characterization of a Novel Nanosized Polyaniline

Banjar,

Joynal Abedin,

Fizal

et al. 2023

Polymers

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“…Synthesis at low temperature (0 o C) is the most common approach in a few papers. Numerous other sources apply synthesis at ambient temperature condition or 25 o C [37,38]. Effective control of temperature was made by using minimal exposure to open area and insulated container for 0 o C condition while usage of water bath set at 25 o C. The effect in particle size will be discussed and studied in this work.…”

Section: Synthesis Temperaturementioning

confidence: 99%

Synthesis and Characterization of Novel Nanosized Polyaniline

Banjar¹,

Abedin²,

Fizal³

et al. 2023

Preprint

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Polyaniline or PANI is a conductive polymer (CPs) with flexibility in turning into conducting properties. The drawback is mainly in terms of limited mechanical properties improvement which attracted the interest in fabrication of PANI with other polymeric materials. PANI-PVL composites film was synthesized and fabricated in this work with chronological steps according to the objectives aligned in two different phases. The first phase determines the optimum parameters to synthesize nanosized PANI. The ideal initial molar ratio, r was 1, stirring speed of 600 rpm, purified by filtration, synthesis temperature of 25 oC, washed by dopant acid, acetone and distilled water. The usage of non-ionic surfactant, Triton X-100 (TX100) with 0.1 % concentration favours the formation of smaller particle size of PANI and good dispersibility compared to the usage of anionic sodium dodecyl sulphate (SDS). The synthesis of PANI in nanosized dimension has the potential to be applied for antimicrobial applications such as gloves and antimicrobial coating of frequent contact points in the near future.

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