Lightweight, Flexible, Thermally-Stable, and Thermally-Insulating Aerogels Derived from Cotton Nanofibrillated Cellulose

Jiale Qi, Yanjun Xie, Haiwei Liang, Yushu Wang, Tingting Ge, Yongming Song, Mengzhu Wang, Qing Li, Haipeng Yu, Zhuangjun Fan, Shouxin Liu, Qingwen Wang, Yixing Liu, Jian Li, Ping Lu, Wenshuai Chen

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Aerogels with multiple advantages have been developed for various requirements, but aerogels tend to be fragile and easy to break when bent or compressed. Herein, high-aspect-ratio cotton-derived nanofibrillated cellulose (NFC) was utilized as building blocks to construct aerogels. The cotton NFC formed strong web-like entangled structures that acted as the skeletal support of aerogels, exhibiting a density lower than that of wood-, bamboo-, and rice straw-derived NFC aerogels. The cotton NFC aerogels (CoNAs) were soft, flexible, and illustrated good resilience performance after compression release. The CoNAs had a high thermal stability arising from the component purity (∼100% cellulose) and high relative crystallinity of cotton NFC, demonstrating their application suitability in high-temperature conditions. Further, the CoNAs exhibited an excellent thermal insulating performance and insulation stability at various temperatures owing to their porous structures and high thermal stability. The CoNAs fabricated herein are thus expected to be a novel member of the nanocellulose aerogel family owing to their intrinsic characteristics attained by integrating multiple structural and performance advantages into the one.

Original languageEnglish (US)
Pages (from-to)9202-9210
Number of pages9
JournalACS Sustainable Chemistry and Engineering
Volume7
Issue number10
DOIs
StatePublished - May 20 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

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