With the collaboration of Iran Polymer Society
CFD study of PE/EVA blend morphology development in a spinneret by Volume of Fluid method

Parisa Mohammadzadeh Pakdel; Reza Yegani; Mahdi Salami Hosseini; Elham Shokri

Articles in Press, Accepted Manuscript, Available Online from 06 March 2025

https://doi.org/10.22063/poj.2025.35626.1344

Abstract
  In the current study, the flow field and morphology development of a polyethylene (PE) and ethylene vinyl acetate (EVA) blend were investigated numerically during extrusion through a spinneret using Fluent 6.3.26 software. The interface of the two phases was tracked using the volume of fluid (VOF) method. ...  Read More

Membrane
Effects of the nozzle arrangement and aerator configuration in slug bubble production to enhance the foulant removal from a flat sheet membrane bioreactor

Nazila Sutudehnezhad; Amir Heydarinasab; Reza Yegani; Farshid Pajoum Shariati

Volume 10, Issue 2 , May 2023, , Pages 117-126

https://doi.org/10.22063/poj.2023.3364.1260

Abstract
  Membrane bioreactors (MBRs) are high-tech systems for water recycling and reusing of unconventional water resources such as municipal wastewater. However, the fouling of polymeric membranes is the main impediment to the market development of MBR. The polyolefin-based membranes are subjected to more severe ...  Read More

Membrane
CO2 absorption through PP/fSiO2 nanocomposite hollow fiber membrane contactor

Saba Raveshiyan; Parya Amirabedi; Reza Yegani; Behzad Pourabbas; Akram Tavakoli

Volume 9, Issue 1 , January 2022, , Pages 61-71

https://doi.org/10.22063/poj.2021.3015.1202

Abstract
  Wetting of polymeric hollow fiber membranes by chemical absorbents is one of the main challenges of gasliquid membrane contactors. This study explored an appropriate method to fabricate a superhydrophobic polypropylene (PP) hollow fiber membrane by incorporating fluorinated silica nanoparticles (fSiO2 ...  Read More

Characterization
Fouling mechanisms during protein microfiltration: The effects of protein structure and filtration pressure on polypropylene microporous membrane performance

Mina Ahsani; Meisam Dabiri Havigh; Reza Yegani

Volume 4, Issue 2 , June 2017, , Pages 175-189

https://doi.org/10.22063/poj.2016.1402

Abstract
  A polypropylene microporous membrane (PPMM) was fabricated by thermally induced phase separation (TIPS) method. The effects of protein size and structure as well as filtration pressure on the membrane performance and fouling mechanisms were investigated using two different proteins, bovine serum albumin ...  Read More

Preparation and characterization of polyethylene/ glass fiber composite membrane prepared via thermally induced phase separation method

Ali Behboudi; Yoones Jafarzadeh; Reza Yegani; Ali Akbari

Volume 4, Issue 2 , June 2017, , Pages 201-212

https://doi.org/10.22063/poj.2016.1418

Abstract
  Grinded glass fiber (GGF) embedded high density polyethylene (HDPE) membranes were prepared via thermally induced phase separation method. FESEM images showed that all the membranes had leafy structure, indicating a solid-liquid mechanism during phase separation. The results of EDX and TGA analyses confirmed ...  Read More

Characterization
Study on the fouling behavior of HDPE/PE-g-MA/EVA blend membrane fabricated via thermally induced phase separation method

Setareh Heidari; Yoones Jafarzadeh; Mahdi Seyfollahi Samarin; Reza Yegani

Volume 4, Issue 2 , June 2017, , Pages 235-251

https://doi.org/10.22063/poj.2017.1466

Abstract
  In this study, neat HDPE and HDPE/PE-g-MA/EVA blend membranes were fabricated via thermally induced phase separation (TIPS) method and their fouling behaviors were examined using filtration of BSA protein. Membranes were characterized using FESEM, AFM, ATR-FTIR analyses and porosity measurement. Fouling ...  Read More

Polyolefin degradation
Anti-fouling behaviors of surface functionalized high density polyethylene membrane in microfiltration of bovine serum albumin protein

Milad Fonouni; Reza Yegani; Sattar Anarjani; Akram Tavakoli

Volume 4, Issue 1 , January 2017, , Pages 13-26

https://doi.org/10.22063/poj.2016.1343

Abstract
  An essential characteristic for high performance inherently hydrophobic membranes such as microporous high density polyethylene (HDPE) membranes is to have a hydrophilic surface. In this project, wet chemical functionalization as a facile and effective method was developed to give a hydrophilic property ...  Read More