Polyvinylidene fluoride (PVDF) is a flexible polymer that can be widely used in water treatment processes. However, its hydrophobic nature limits its potential applications in this field. This study aimed to enhance the durability and stability of an electrospun PVDF membrane by incorporating TiO2 nanoparticles and polydopamine (PDA) to improve membrane performance. The self-polymerisation and strong adhesion properties of PDA enhance surface modification of the electrospun PVDF<InlineEquation ID="IEq2"> <EquationSource Format="TEX">$/$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">/</mo> </math></EquationSource> </InlineEquation>TiO2 nanocomposite membrane using a dip coating process. SEM and FTIR analyses confirmed that adding 0.5% nanocomposite and PDA did not alter the structure of the PVDF matrix, ensuring uniform distribution of TiO2 nanoparticles on the surface of the fabricated membrane. TGA analysis showed that the PVDF<InlineEquation ID="IEq3"> <EquationSource Format="TEX">$/$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">/</mo> </math></EquationSource> </InlineEquation>TiO2<InlineEquation ID="IEq4"> <EquationSource Format="TEX">$/$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">/</mo> </math></EquationSource> </InlineEquation>PDA membrane exhibited mass loss at 650 °C, indicating thermal stability, along with high tensile strength (2.7%) and porosity (86.3%), which promote surface modification and improve the membrane's strength and stability. This research successfully expanded the application of the fabricated PVDF<InlineEquation ID="IEq5"> <EquationSource Format="TEX">$/$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">/</mo> </math></EquationSource> </InlineEquation>TiO2<InlineEquation ID="IEq6"> <EquationSource Format="TEX">$/$</EquationSource> <EquationSource Format="MATHML"><math> <mo stretchy="false">/</mo> </math></EquationSource> </InlineEquation>PDA membrane, making it suitable for various water purification and separation techniques.

Fabrication of electrospun polydopamine-modified polyvinylidene fluoride$/$TiO₂ nanocomposite membrane for water purification

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发表日期：

2026年2月3日

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S Iswariya,
E Papanasam,
E Manikandan,
S Muthuswamy

摘要

Polyvinylidene fluoride (PVDF) is a flexible polymer that can be widely used in water treatment processes. However, its hydrophobic nature limits its potential applications in this field. This study aimed to enhance the durability and stability of an electrospun PVDF membrane by incorporating TiO₂ nanoparticles and polydopamine (PDA) to improve membrane performance. The self-polymerisation and strong adhesion properties of PDA enhance surface modification of the electrospun PVDF $/$ $/$ TiO₂ nanocomposite membrane using a dip coating process. SEM and FTIR analyses confirmed that adding 0.5% nanocomposite and PDA did not alter the structure of the PVDF matrix, ensuring uniform distribution of TiO₂ nanoparticles on the surface of the fabricated membrane. TGA analysis showed that the PVDF $/$ $/$ TiO₂ $/$ $/$ PDA membrane exhibited mass loss at 650 °C, indicating thermal stability, along with high tensile strength (2.7%) and porosity (86.3%), which promote surface modification and improve the membrane's strength and stability. This research successfully expanded the application of the fabricated PVDF $/$ $/$ TiO₂ $/$ $/$ PDA membrane, making it suitable for various water purification and separation techniques.

Fabrication of electrospun polydopamine-modified polyvinylidene fluoride\(/\)TiO2 nanocomposite membrane for water purification

摘要

Fabrication of electrospun polydopamine-modified polyvinylidene fluoride\(/\)TiO₂ nanocomposite membrane for water purification