Effects of SiO2 nanoparticles on structure and property of form-stable phase change materials made of cellulose acetate phase inversion membrane absorbed with capric-myristic-stearic acid ternary eutectic mixture

•Form-stable PCMs were made of CMS eutectics and CA phase inversion membrane.•Addition of SiO2 increased surface roughness and specific surface area of membrane.•The CA-SiO2 membrane had high CMS incorporation capacity with ∼80.3wt.%.•Fabricated form-stable PCMs had good thermal energy storage/retrieval property.•The resulting form-stable PCMs demonstrated great temperature regulation ability.