Plasticizer-Free High-Strain PVC Film using TiO<SUB>2</SUB> Nanoparticle
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초록
내용
Poly(vinyl chloride) (PVC) is one of the most important commercial polymer with low costs, good durability, and resistance toward chemical corrosion. PVC is usually blended with large amount of plasticizers to achieve the desired flexibility and durability. However, currently PVC is commonly blended with large amounts of plasticizers such as as dioctyl phthalate (DOP) or bis(2-ethylhexyl) phthalate (DEHP), which are potentially harmful to infants and pregnant women. Herein, we fabricate a plasticizer-free PVC films process by investigating a model system at ambient conditions. Plasticizer-free PVC/TiO2 composite film were prepared by TiO2 dispersed PVC solution. The low strain and toughness of PVC film were mitigated by introducing 25-nm TiO2 nanoparticles at loading below 0.8 wt%. The thus obtained PVC/TiO2 composite showed superb elongation at break (383%) and toughness (64.7 J m-3) due to modified molecular interactions between nanoparticles and PVC chains.