{
  "abstract": "Aqueous dispersions of hydrophobic carbon black (CB) particles can be stabilized by carboxymethylcellulose (CMC), forming CB-CMC hydrogels whose microstructure is controlled by the relative CB-to-polymer content. At low CMC content, CB particles form a percolated, electrically conductive network, whereas at higher polymer content, CB particles act as isolated physical crosslinkers within an electrically insulating polymer matrix [see Legrand \\textit{et al.}, Macromolecules 56, 2298-2308 (2023)]. Combining rheology and electrical impedance spectroscopy, we show that these two regimes exhibit markedly different aging dynamics. Conductive hydrogels exhibit logarithmic elastic recovery associated with a percolated CB network, whereas insulating hydrogels exhibit a combination of logarithmic and power-law stiffening, accompanied by dielectric polarization associated with confined ionic motion. The insulating hydrogels further exhibit a time-aging superposition principle, as their viscoelastic spectra measured in a time-resolved fashion can collapse onto a single master curve. Under steady shear, the viscoelastic response measured perpendicular to the flow also obeys a time--shear-rate superposition principle. Remarkably, the scaling between the shift factors under shear is reminiscent of critical-gel behavior, unlike that observed during aging at rest. Finally, time-resolved rheo-USAXS measurements performed during shear-rate cycles reveal structural rearrangements of CB particles and clusters that correlate with rheological hysteresis. These results provide a microstructural basis for understanding the nonlinear rheology of insulating CB-CMC hydrogels and establish generalized superposition principles as a unifying framework for their aging and flow behavior.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.33682",
  "author_total": 6,
  "authors": [
    {
      "name": "Gauthier Legrand"
    },
    {
      "name": "Guilhem P. Baeza"
    },
    {
      "name": "Jarno L. Waeterloos"
    },
    {
      "name": "Christian Clasen"
    },
    {
      "name": "Sébastien Manneville"
    },
    {
      "name": "Thibaut Divoux"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/exjz00d4q5mea.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.33682",
  "fulltext_url": null,
  "id": "exjz00d4q5mea",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.33682",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.soft"
    ],
    [
      "arxiv",
      "physics.app-ph"
    ],
    [
      "openalex",
      "1507|Rheology and Fluid Dynamics Studies"
    ]
  ],
  "openalex": "W7223958510",
  "pdf_url": "https://arxiv.org/pdf/2610.33682",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/exjz00d4q5mea.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.33682",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.33682"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.app-ph",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Aging dynamics and generalized superposition principles in carbon black-carboxymethylcellulose hydrogels",
  "title_text": "Aging dynamics and generalized superposition principles in carbon black-carboxymethylcellulose hydrogels",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/exjz00d4q5mea",
  "venue": "arXiv",
  "versions": []
}