Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 5, Issue 8, Pages 7012-7019Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b01247
Keywords
Biomaterials; Aerogel; Mechanical properties; Thermal insulation; Flame retardancy
Categories
Funding
- National Science Foundation of China [51503191, 51403192]
Ask authors/readers for more resources
Biomass-based thermally insulating and flame-retardant polymer aerogels were fabricated from renewable pectin (PC) and aniline via polymerization-coagulation and a supercritical drying process. A special physical cross-linking action existed between PC and polyaniline (PA). The resultant aerogels showed three-dimensional networks with hierarchical pores and high surface areas (103-205 m(2) g(-1)). With benefits from the cross-linking structure, the pectin-based aerogels exhibited good compressive strengths (4.7-9.2 MPa) and water resistance. The results from thermal conductivity measurements and thermogravimetric analysis revealed that these aerogels also had low thermal conductivity (0.033-0.038 W m(-1) K-1) and considerable thermal stability. The limiting oxygen index, vertical burning tests, microscale combustion, and cone calorimetry tests further confirmed that the inherently low flammability of the aerogels could be achieved by the flame retardancy of PA and the cross-linking action between PA and PC. These aerogels with good mechanical properties, water resistance, and low thermal conductivity and flammability show promising prospects in the field of thermal insulation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available