Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 13, Pages 5969-5975Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am400171y
Keywords
organic aerogels; cellulose nanofibrils; graphene oxide; nanocomposites; thermal conductivity; hydrophobicity
Funding
- National Science Foundation [CMMI 1032186]
- USDA Forest Products Laboratory (Madison, WI)
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Hybrid organic aerogels consisting of polyvinyl alcohol (PVA), cellulose nanofibrils (CNFs), and graphene oxide nanosheets (GONSs) were prepared using an environmentally friendly freeze-drying process. The material properties of these fabricated aerogels were measured and analyzed using various characterization techniques including, compression testing, scanning electron microscopy, thermogravimetric (TGA) analysis, Bninatier-Emmet-Teller (BET) surface area analysis, and contact angle measurements. These environmentally friendly,. biobased hybrid organic aerogels exhibited a series of desirable properties including a high specific compressive strength and compressive failure strain, ultralow density and thermal conductivity, good thermal stability, and moisture resistance, making them potentially useful for a broad range of applications including thermal insulation.
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