Durable pressure filtration membranes based on polyaniline-polyimide P84 blends

Izzati Izni Yusoff, Rosiah Rohani, Nadiah Khairul Zaman, Mohd Usman Mohd Junaidi, Abdul Wahab Mohammad, Zamardina Zainal

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A pressure filtration membrane from conducting polymer polyaniline (PANI) is known to possess low mechanical strength and thermal stability. Therefore, it is believed that the properties of the membrane can be enhanced by blending PANI with a conventional polymer like polyimide (PI), which possesses high mechanical strength and thermal stability. A thermal analysis revealed that polymer chain of blend membranes started to break beyond the melting temperature of pure PANI membrane indicating that the addition of PI hindered the degradation of PANI and thus slowed down the decomposition process. Mechanical tests further showed that PANI/PI membrane had a tensile strength that was 60% higher than pure PANI membrane. Furthermore, the surface hydrophilicity and negativity of the blend membrane increased as it was doped in acid, thereby reflecting the exploitation of advantages of both polymers. Rejection at various molecular ranges of PEGs showed that PANI/PI membrane was initially in the ultrafiltration (UF) range, but later fell into the nanofiltration (NF) range when an acid dopant was introduced to the membrane. According to the long-term filtration performance, the PANI/PI membrane was able to sustain a rejection of up to 99% in Congo red solution with just a slight reduction in flux.

Original languageEnglish
JournalPolymer Engineering and Science
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Polyaniline
Polyimides
Membranes
Polymers
Strength of materials
Thermodynamic stability
polyaniline
Congo Red
Nanofiltration
Acids
Hydrophilicity
Conducting polymers
Ultrafiltration
Thermoanalysis
Polyethylene glycols
Melting point
Tensile strength
Doping (additives)
Fluxes
Decomposition

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Durable pressure filtration membranes based on polyaniline-polyimide P84 blends. / Yusoff, Izzati Izni; Rohani, Rosiah; Khairul Zaman, Nadiah; Junaidi, Mohd Usman Mohd; Mohammad, Abdul Wahab; Zainal, Zamardina.

In: Polymer Engineering and Science, 01.01.2018.

Research output: Contribution to journalArticle

Yusoff, Izzati Izni ; Rohani, Rosiah ; Khairul Zaman, Nadiah ; Junaidi, Mohd Usman Mohd ; Mohammad, Abdul Wahab ; Zainal, Zamardina. / Durable pressure filtration membranes based on polyaniline-polyimide P84 blends. In: Polymer Engineering and Science. 2018.
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