a.Polymer and Biomaterials Research Laboratory, Department of Chemistry, Faculty of Science, Fırat University, Elazig 23119, Türkiye
b.Chemistry Department, College of Science, University of Raparin, Rania, Sulaymaniyah 46012, Iraq
c.Department of Biology, Faculty of Science, Fırat University, Elazig 23119, Türkiye
d.Chemistry Department, Art and Science Faculty, Amasya University, Amasya 05100, Türkiye
e.Department of Physics, College of Science, University of Raparin, Rania, Sulaymaniyah 46012, Iraq
f.Department of Pharmacy, College of Pharmacy, Knowledge University, Erbil 44001, Iraq
g.Department of Biotechnology, Faculty of Science, Bartın University, Bartın 74100, Türkiye, Turkey
h.Technical Sciences Vocational School, Department of Chemistry and Chemical Process Technology, Amasya University, 05186 Amasya, Türkiye
i.Department of Physics, Faculty of Science, Fırat University, Elazig 23119, Türkiye
j.Department of Chemistry, Faculty of Science, Fırat University, Elazig 23119, Türkiye
epekdemir@firat.edu.tr
收稿:2025-12-25,
录用:2026-02-01,
网络首发:2026-05-20,
纸质出版:2026-06-05
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Pekdemir, M. E.; Babakr, K. A.; Pekdemir, S. S.; Taş, N. A.; Çetik, Ş.; Qader, I. N.; Altun, S.; Taş, R.; Kök, M.; Tuncer, H. Interfacial and structure-property relationships in poly(lactic acid)/polyaniline bio-nanocomposites incorporating green-synthesized ZnCoS nanoparticles. Chinese J. Polym. Sci. 2026, 44, 1940–1954
Mustafa Ersin Pekdemir, Karukh Ali Babakr, Sibel Selçuk Pekdemir, et al. Interfacial and Structure-Property Relationships in Poly(lactic acid)/Polyaniline Bio-nanocomposites Incorporating Green-synthesized ZnCoS Nanoparticles[J]. Chinese Journal of Polymer Science, 2026, 44(6): 1940-1954.
Pekdemir, M. E.; Babakr, K. A.; Pekdemir, S. S.; Taş, N. A.; Çetik, Ş.; Qader, I. N.; Altun, S.; Taş, R.; Kök, M.; Tuncer, H. Interfacial and structure-property relationships in poly(lactic acid)/polyaniline bio-nanocomposites incorporating green-synthesized ZnCoS nanoparticles. Chinese J. Polym. Sci. 2026, 44, 1940–1954 DOI: 10.1007/s10118-026-3608-7.
Mustafa Ersin Pekdemir, Karukh Ali Babakr, Sibel Selçuk Pekdemir, et al. Interfacial and Structure-Property Relationships in Poly(lactic acid)/Polyaniline Bio-nanocomposites Incorporating Green-synthesized ZnCoS Nanoparticles[J]. Chinese Journal of Polymer Science, 2026, 44(6): 1940-1954. DOI: 10.1007/s10118-026-3608-7.
Green-synthesized ZnCoS nanoparticles enhance interfacial polarization
thermal stability
and shape-memory recovery in poly(lactic acid)/polyaniline (PLA/PANI) nanocomposites
demonstrating structure-property correlations governed by nanoparticle loading.
Biodegradable polymer nanocomposites containing functional nanoparticles have attracted growing interest because interfacial phenomena can strongly influence macroscopic properties. In this study
ZnCoS nanoparticles were synthesized by a green microwave-assisted route and incorporated into a poly(lactic acid)/polyaniline (PLA/PANI) matrix at 1 wt%
5 wt%
10 wt%
and 20 wt% loadings. Dynamic light scattering indicated an average hydrodynamic diameter of 195.35 nm
suggesting partial aggregation in the dispersion. The ATR-FTIR spectra indicated nanoparticle-polymer interfacial interactions without evidence of chemical alteration of the polymer backbone. X-ray diffraction showed a non-monotonic crystallinity trend
with an initial decrease at low nanoparticle loading followed by an increase at higher loadings
consistent with heterogeneous nucleation. Thermal analysis showed improved thermal stability
with the char yield increasing from 4.30% for the neat PLA/PANI to 10.70% at 20 wt% ZnCoS
while the glass-transition and melting temperatures remained essentially unchanged. Dielectric and AC electrical measurements showed a frequency-independent conductivity plateau at low frequencies
followed by dispersive behavior at higher frequencies
consistent with hopping-type charge transport. At low ZnCoS loadings
interfacial charge trapping reduced the AC conductivity and dielectric loss
whereas higher loadings enhanced interfacial polarization and partially recovered the conductivity. The dielectric spectra showed clear Maxwell-Wagner-Sillars polarization and broad relaxation
indicative of a distribution of relaxation times
underscoring the key role of interfacial effects in the electrical response. Overall
the results clarify the nanoparticle-polymer interfacial contributions in biodegradable nanocomposites and support their relevance in functional and transient material systems.
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