In this study, calcium oxide (CaO) was used as an additive to form pores in a cellulose acetate (CA) membrane and at the same time improve the thermal stability of the cellulose acetate membrane. When the CA/CaO membrane was exposed to water pressure, the solvent was removed from the CA matrix area plasticized by the CaO particle size and water channels were formed. In addition, the high melting point of CaO and its bonding with the carbonyl group of CA caused a crosslinking effect.We succeeded in membrane synthesis with a high porosity of 73.1% and ux data of 95.25 L/m 2 h at 8 bar, which was enhanced thermally with an increased decomposition temperature of 50°C on thermogravimetric analysis (TGA). The pores generated in the cellulose acetate lm were con rmed using a scanning electron microscope machine (SEM) and mercury porosimeter. Thermal stability and interactions in materials were measured using TGA and Fourier transform infrared (FT-IR).

In this study, a polymer separator with enhanced thermal stability is prepared to solve the problem of thermal durability of lithium-ion battery separators. This separator is manufactured by coating a solution of acetyl cellulose and glycerin on polypropylene. The added glycerin reacts with the acetyl cellulose chains, helping the chains become flexible, and promotes the formation of many pores in the acetyl cellulose. To improve the thermal stability of the separator, a mixed solution of acetyl cellulose and glycerin was coated twice on the PP membrane film. Water pressure is applied using a water treatment equipment to partially connect the pores of a small size in each layer and for the interaction between the PP and acetyl cellulose. SEM is used to observe the shape, size, and quantity of pores. TGA and FT-IR are used to observe the interactions. Average water flux data of the separators is 1.42 LMH and the decomposition temperature increases by about 60 °C compared to the neat acetyl cellulose. It is confirmed that there is an interaction with PP between the functional groups of acetyl cellulose.

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In this study, calcium oxide (CaO) was used as an additive to form pores in a cellulose acetate (CA) membrane and at the same time improve the thermal stability of the cellulose acetate membrane. When the CA/CaO membrane was exposed to water pressure, the solvent was removed from the CA matrix area plasticized by the CaO particle size and water channels were formed. In addition, the high melting point of CaO and its bonding with the carbonyl group of CA caused a crosslinking effect. We succeeded in membrane synthesis with a high porosity of 73.1% and flux data of 95.25 L/m2h at 8 bar, which was enhanced thermally with an increased decomposition temperature of 50°C on thermogravimetric analysis (TGA). The pores generated in the cellulose acetate film were confirmed using a scanning electron microscope machine (SEM) and mercury porosimeter. Thermal stability and interactions in materials were measured using TGA and Fourier transform infrared (FT-IR).