Effect of lanthanum on thermal and mechanical properties of modified polyvinyl chloride film

Abstract Polyvinyl chloride (PVC) hybrid film containing cerium, tin and folic acid modified nano titanium dioxide is a new functional material with good compatibility, light resistance heat resistance. In this work, the PVC was prepared by replacing cerium lanthanum. The characterized thermogravimetric infrared spectroscopy, dynamic mechanical analysis, atomic force microscopy, x-ray photoelectron scanning electron tensile strength thermal aging. results show that initial stability of lanthanum slightly higher than control sample (conversion α < 1.9%). For same gaseous component plasticizer, peak intensity ester based characteristic group lanthanum, indicating intermolecular between plasticizer greater cerium. range 350 °C–575 °C wave number 2850–3100 cm −1 , height significantly sample, which may be due to difference outer layer electrons. O C atoms on surface lower relative concentration atoms. roughness RMS organic film, result attraction TiO 2 carbon chlorine bond in PVC. It has function potential ultrafiltration membrane. addition, 1phr shows energy storage modulus low temperature characteristics multi-functional material.