Foundational principles of microwave chemistry

Das, Aparna; Banik, Bimal K.

doi:10.1016/b978-0-12-822895-1.00005-9

Cited by 1 publication

(3 citation statements)

References 65 publications

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“…Additionally, there is also an ionic polarization force from Zn 2+ that comes from ZnO, giving the PDA more energy and supporting better alignment. As expected, they are more ordered compared to previously, resulting in the formation of nanomaterials with uniform size distribution [23,30,39].…”

Section: Resultssupporting

confidence: 75%

“…Therefore, the synthesis of nanocomposite via microwave increased local molecular ordering. The increase in bilayer d-spacing corresponded to the well-defined structures morphologies and larger particle size [39,43]. Microwave-assisted synthesis significantly decreases synthesis time while also providing low energy consumption with no impact in product yield [44].…”

Section: Resultsmentioning

confidence: 99%

“…Water, alcohols, and other polar compound, mostly oxygen-containing compounds can readily absorb microwaves and convert their energy into heat. [35][36][37][38][39]. In addition, the previous study about PDA/ZnO nanocomposite demonstrated the occurrence of Zn 2+ in nanocomposite leaking from ZnO, producing the intercalated PDA/Zn 2+ structure [23].…”

Section: Introductionmentioning

confidence: 99%

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One-pot microwave-assisted approach of polydiacetylene/zinc oxide nanocomposite for reversible thermochromic

KHANANTONG,

SRINOPKUN,

BOONMAK

et al. 2024

J Met Mater Miner

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This study introduces a new technique to fabricate the reversible poly(PCDA/ZnO) nanocomposites thermochromism. Our preparation process is the solution-mixing method, which is supported by microwave synthesis time instead of ultrasonic bath or stirrer. The presence of ethanol molecules in aqueous media in the solution-mixing method induces dipolar polarization. In addition, the presence of Zn2+ leaking out of the ZnO can produce ionic polarization. These factors affect the shape of poly(PCDA/ZnO) nanocomposites based on their thermochromic properties. The optical properties of poly(PCDA/ZnO) nanocomposite were determined through UV-Vis absorption spectroscopy. The morphology of this nanocomposite was examined by scanning electron microscopy, and its crystallinity was investigated by X-ray diffraction. The inter-intrachain interaction was confirmed by infrared spectroscopy. In addition, the poly(PCDA/ZnO) nanocomposite embedding PVA was prepared. The reversible theromochromic properties of poly(PCDA/ZnO) nanocomposites demonstrated a higher color transition temperature with increasing microwave synthesis time. It is an important observation to understand the effect of microwave synthesis time on the morphology and reversible thermochromism of the poly(PCDA/ZnO) nanocomposite

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Section: Resultssupporting

confidence: 75%

Section: Resultsmentioning

confidence: 99%