Table 1.

Properties/characteristics of the final produced aerogels and hydrogels.

Category	Property	Characteristics
Cellulose-based gels	Chemical	Radiation resistance, sunlight and UV resistance, weather (temperature, humidity, atmospheric pressure) resistance, recyclability
	Physical	Surface topology, texture, specific heat, density/porosity, thermal expansion, surface roughness, electrical conductivity, dielectric constant, thermal stability, color and esthetic
	Biological	Toxicity, biodegradability, biostability
	Mechanical/structural	Mechanical strength, Shear modulus, elastic modulus, fatigue strength, impact strength, creep resistance, yield strength, elongation to break,
	Technical	Fabrication costs, packaging, reproducibility, product quality, safety, life-cycle analysis