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• W4319296957 abstract "Abstract Polyaniline (PANI) is a conductive polymer that is attracting much attention nowadays especially for the design of flexible supercapacitors and sensors. One of the commonly used methods to synthesize PANI is chemical oxidative polymerization (COP). In the present work, the effects of (i) polymerization time and (ii) type of dopant media used in COP were evaluated and correlated to the morphological and electrical properties of the formed PANI. In terms of morphological properties, it was found that extending the polymerization time of COP in hydrochloric acid (HCl) medium from 1 to 5 h induced the formation of regular flake‐ and globule‐like structures. Despite that, there was not much change in the surface functional groups, as verified from the infrared absorption spectrum. An intermingled structure containing (i) stacking of flake‐like particles and (ii) interconnection of long fibrous‐like particles with fewer branches was seen for PANI produced at 3 h of polymerization time. Such a unique morphological property is suggested to lower the electrical resistance of PANI to 0.56 × 10 3 Ω. On the other hand, by changing the dopant medium from HCl to sulfuric acid (H 2 SO 4 ), acetic acid (CH 3 COOH), water (H 2 O) and ammonium hydroxide (NH 3 ⋅H 2 O), the PANI morphology was altered to globular shape with cauliflower‐like structure, tube‐like structure, plate‐like structure and flake‐like structure, respectively. The resistance of these PANIs was successfully tuned and found to increase following the order of PANI–H 2 SO 4 < PANI–CH 3 COOH < PANI–H 2 O < PANI–NH 3 ⋅H 2 O. © 2023 Society of Industrial Chemistry." @default.
• W4319296957 created "2023-02-07" @default.
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• W4319296957 date "2023-02-17" @default.
• W4319296957 modified "2023-10-18" @default.
• W4319296957 title "Tunable electrical resistance of polyaniline and its correlation to morphological properties and surface functional groups" @default.
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• W4319296957 doi "https://doi.org/10.1002/pi.6505" @default.
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