Peer-reviewedCC BY 4.0ACS Omega8 Oct 2026

Cellulose-Based Nanosponges with PEDOT:PSS as Pressure Sensors with Tunable Elasticity: A Study on Modulation of Mechanical Properties and Pressure Response

V. Vit¹
L. Riva²
V. Sinisi¹
A. Fiorati²
A. Alam^1,3
A. B. Alabi¹
C. Punta²
N. Coppedè¹

¹National Research Council (CNR) , , Parco Area Delle Scienze 37/A , ,
²Department of Chemistry, Materials, and Chemical Engineering “G. Natta” Politecnico di Milano and INSTM Local Unit , Piazza Leonardo Da Vinci 32 , ,
³University of Parma, Italy , , Parco Area Delle Scienze, 17/A , ,

Abstract

This study investigates the suitability of sustainable, highly porous nanosponges, composed of TEMPO-oxidized cellulose nanofibers (TOCNF) and branched polyethylenimine (bPEI, cross-linker), as scaffolds for PEDOT:PSS poly(3,4-ethylenedioxythiophene):polystyrenesulfonate dip coating to design piezoresistive pressure sensors. The mechanical properties of the nanosponges were tuned by introducing citric acid (CA) as a co-cross-linker, varying its content from 0% to 18% relative to the moles of primary amines of bPEI. The resulting devices functioned effectively as pressure sensors, with the best performance achieved at 3% CA. This configuration operated reliably up to 200 kPa and reached a sensitivity of 1.96 × 10–3 mA·kPa–1. These findings confirm the promising performance of cellulose-based nanosponges and pave the way for their integration into lightweight and environmentally friendly pressure sensors.

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BibTeX RIS

BibTeX

@article{vit2026cellulosebased,
  title = {{Cellulose-Based Nanosponges with PEDOT:PSS as Pressure Sensors with Tunable Elasticity: A Study on Modulation of Mechanical Properties and Pressure Response}},
  author = {V. Vit and L. Riva and V. Sinisi and A. Fiorati and A. Alam and A. B. Alabi and C. Punta and N. Coppedè},
  journal = {ACS Omega},
  year = {2026},
  month = oct,
  doi = {10.1021/acsomega.6c03688},
  url = {https://pubs.acs.org/acsodf/article/11/41/62623/5446740/Cellulose-Based-Nanosponges-with-PEDOT-PSS-as},
  note = {CC BY 4.0},
}

RIS

TY  - JOUR
TI  - Cellulose-Based Nanosponges with PEDOT:PSS as Pressure Sensors with Tunable Elasticity: A Study on Modulation of Mechanical Properties and Pressure Response
AU  - V. Vit
AU  - L. Riva
AU  - V. Sinisi
AU  - A. Fiorati
AU  - A. Alam
AU  - A. B. Alabi
AU  - C. Punta
AU  - N. Coppedè
PY  - 2026
DA  - 2026/10/08
JO  - ACS Omega
DO  - 10.1021/acsomega.6c03688
UR  - https://pubs.acs.org/acsodf/article/11/41/62623/5446740/Cellulose-Based-Nanosponges-with-PEDOT-PSS-as
AB  - This study investigates the suitability of sustainable, highly porous nanosponges, composed of TEMPO-oxidized cellulose nanofibers (TOCNF) and branched polyethylenimine (bPEI, cross-linker), as scaffolds for PEDOT:PSS poly(3,4-ethylenedioxythiophene):polystyrenesulfonate dip coating to design piezoresistive pressure sensors. The mechanical properties of the nanosponges were tuned by introducing citric acid (CA) as a co-cross-linker, varying its content from 0% to 18% relative to the moles of primary amines of bPEI. The resulting devices functioned effectively as pressure sensors, with the best performance achieved at 3% CA. This configuration operated reliably up to 200 kPa and reached a sensitivity of 1.96 × 10–3 mA·kPa–1. These findings confirm the promising performance of cellulose-based nanosponges and pave the way for their integration into lightweight and environmentally friendly pressure sensors.
SN  - 2470-1343
ER  -

Abstract

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