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<p>Hybrid nanomaterials attract significant interest from scientists and industry due to their diverse bio-physical properties and their potential for dual applications. New nanocomposites were fabricated by loading polyethyleneimine (PEI) into a hydroxypropyl methyl cellulose (HPMC)- blended polymer. These blended polymers were reinforced with graphene oxide (GO) functionalized with MXene (Ti<sub>3</sub>C<sub>2</sub>) nanosheets to obtain (HPMC-PEI/GO@Ti<sub>3</sub>C) nanocomposites. The developed acoustic-mixing-ultrasonic-casting procedure was applied to improve nanomaterial dispersion in the matrix. Fourier transform infrared spectroscopy showed strong bonding and interfacial interaction between the nanomaterials and the polymers. The main polymer structure does not change upon loading nanomaterials, as demonstrated by the X-ray diffraction spectrum. Optical microscopy and field emission scanning electron microscopy revealed fine homogeneity of the polymer matrix and excellent dispersion of nanosheets in the nanocomposites. Optical absorbance increased from 3.45 to 3.98 at 200&#xa0;nm wavelength, whereas the energy gap significantly decreased from 5.1&#xa0;eV to 2.4&#xa0;eV and from 5.4&#xa0;eV to 3&#xa0;eV for allowed and forbidden transitions, respectively. Interestingly, functional GO@MXene showed notable improvements in the inhibition zone, up to 21&#xa0;mm for <i>Streptococcus mutans</i> and 14.5&#xa0;mm for <i>Acinetobacter baumannii</i>, which is the first time this has been reported against these materials. Whereas the loading of nanomaterials in the polymer matrix presented an enhancement of up to 22&#xa0;mm and 17&#xa0;mm, respectively. Loading functional GO-MXene nanomaterials presented the best results compared to using GO to reinforce the blended polymers. New nanocomposites revealed promising applications in flexible optoelectronic and biological devices.</p>

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Tailored Hybrid Nanomaterials for Tuning Structure–Bandgap Relationship of HPMC-Based Nanocomposite for Dual Optoelectronic and Antibacterial Applications

  • 期刊论文

  • 发表日期：

    2026年6月21日

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  • Hawraa Kadhim,
  • Khalidah H. Al-Mayalee,
  • Ehssan Al-Bermany

摘要

Hybrid nanomaterials attract significant interest from scientists and industry due to their diverse bio-physical properties and their potential for dual applications. New nanocomposites were fabricated by loading polyethyleneimine (PEI) into a hydroxypropyl methyl cellulose (HPMC)- blended polymer. These blended polymers were reinforced with graphene oxide (GO) functionalized with MXene (Ti3C2) nanosheets to obtain (HPMC-PEI/GO@Ti3C) nanocomposites. The developed acoustic-mixing-ultrasonic-casting procedure was applied to improve nanomaterial dispersion in the matrix. Fourier transform infrared spectroscopy showed strong bonding and interfacial interaction between the nanomaterials and the polymers. The main polymer structure does not change upon loading nanomaterials, as demonstrated by the X-ray diffraction spectrum. Optical microscopy and field emission scanning electron microscopy revealed fine homogeneity of the polymer matrix and excellent dispersion of nanosheets in the nanocomposites. Optical absorbance increased from 3.45 to 3.98 at 200 nm wavelength, whereas the energy gap significantly decreased from 5.1 eV to 2.4 eV and from 5.4 eV to 3 eV for allowed and forbidden transitions, respectively. Interestingly, functional GO@MXene showed notable improvements in the inhibition zone, up to 21 mm for Streptococcus mutans and 14.5 mm for Acinetobacter baumannii, which is the first time this has been reported against these materials. Whereas the loading of nanomaterials in the polymer matrix presented an enhancement of up to 22 mm and 17 mm, respectively. Loading functional GO-MXene nanomaterials presented the best results compared to using GO to reinforce the blended polymers. New nanocomposites revealed promising applications in flexible optoelectronic and biological devices.