What does this research mean for the field?

The aspect ratio of cellulose nanofibers serves as a critical geometrical lever in CNF/gelatin aerogels, where medium aspect ratios optimize optical radiative cooling performance and long aspect ratios maximize thermal insulation and mechanical robustness. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate how the aspect ratio of cellulose nanofibers regulates network formation, pore structure, and the balance of optical, thermal, and mechanical properties in bio-based radiative cooling aerogels.

September 6, 2026ACS Sustainable Resource ManagementOpen Access

Study on Radiative Cooling Performance of Cellulose Nanofiber/Gelatin Aerogels Tuned by Fiber Aspect Ratio

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Authors

BWBaoliang Wang YCYuchen Chao FWFeng Wang

Discussion

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Overview

Materials study demonstrates passive sub-ambient cooling up to 4.9 °C using cellulose nanofiber/gelatin aerogels, indicating fiber aspect ratio balances optical, thermal, and structural trade-offs.

Key Points

To evaluate how the aspect ratio of cellulose nanofibers regulates network formation, pore structure, and the balance of optical, thermal, and mechanical properties in bio-based radiative cooling aerogels.
Fabricated additive-free CNF/gelatin composite aerogels via aqueous assembly and freeze-drying using CNFs categorized by short, medium, and long aspect ratios.
Evaluated network connectivity, pore morphology, density, thermal conductivity, and dry compressive mechanics across fiber geometries.
Quantified optical properties via solar reflectance and infrared emissivity, followed by outdoor cooling performance tests under solar exposure.
Medium-CNF/gelatin aerogels demonstrated the strongest optical performance, reaching a solar reflectance of 89% and an infrared emissivity of 88% due to smaller, narrower pore distributions.
Long-CNF aerogels formed more continuous networks, conferring higher porosity, reduced thermal conductivity, and superior dry-state compressive load-bearing capacity.
Outdoor field testing of the composite aerogels achieved passive sub-ambient radiative cooling of up to 4.9 °C.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/6a9d1e4528139818eab210a3 https://doi.org/10.1021/acssusresmgt.6c00358

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September 6, 2026ACS Sustainable Resource ManagementOpen Access

Study on Radiative Cooling Performance of Cellulose Nanofiber/Gelatin Aerogels Tuned by Fiber Aspect Ratio

View Full Paper

Ask AI

Bookmark

Authors

BWBaoliang Wang YCYuchen Chao FWFeng Wang

Discussion

Member takes

Overview

Materials study demonstrates passive sub-ambient cooling up to 4.9 °C using cellulose nanofiber/gelatin aerogels, indicating fiber aspect ratio balances optical, thermal, and structural trade-offs.

Key Points

To evaluate how the aspect ratio of cellulose nanofibers regulates network formation, pore structure, and the balance of optical, thermal, and mechanical properties in bio-based radiative cooling aerogels.
Fabricated additive-free CNF/gelatin composite aerogels via aqueous assembly and freeze-drying using CNFs categorized by short, medium, and long aspect ratios.
Evaluated network connectivity, pore morphology, density, thermal conductivity, and dry compressive mechanics across fiber geometries.
Quantified optical properties via solar reflectance and infrared emissivity, followed by outdoor cooling performance tests under solar exposure.
Medium-CNF/gelatin aerogels demonstrated the strongest optical performance, reaching a solar reflectance of 89% and an infrared emissivity of 88% due to smaller, narrower pore distributions.
Long-CNF aerogels formed more continuous networks, conferring higher porosity, reduced thermal conductivity, and superior dry-state compressive load-bearing capacity.
Outdoor field testing of the composite aerogels achieved passive sub-ambient radiative cooling of up to 4.9 °C.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/6a9d1e4528139818eab210a3 https://doi.org/10.1021/acssusresmgt.6c00358

View Full Paper

Ask AI

Bookmark