With the collaboration of Iran Polymer Society
Simulation & Modeling
Computational fluid dynamics study of polyethylene/ ethylene vinyl acetate blend morphology development in a spinneret by volume of fluid method

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

Volume 12, Issue 2 , June 2025, , Pages 73-84

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

Simulation & Modeling
An advanced approach to predicting optimal material compositions for graphene/carbon black reinforced polypropylene/polyvinyl chloride nanocomposites focusing mechanical and economic performance

Utkarsh A. Patil; Pravin Ramchandra Kubade

Volume 12, Issue 2 , June 2025, , Pages 107-118

https://doi.org/10.22063/poj.2025.35662.1348

Abstract
  The growing need for enhanced materials has led to the development of nanocomposites, which have shown great potential in various industries. However, optimizing the composition of these materials to achieve the best mechanical performance and cos t-effectiveness remains a challenge. This research addresses ...  Read More

Simulation & Modeling
A study of polypropylene and graphene and their nanocomposites using ANSYS

Aamir Mustafa Shaikh; Pravin R. Kubade

Volume 11, Issue 3 , August 2024, , Pages 155-166

https://doi.org/10.22063/poj.2024.3604.1302

Abstract
  Polymers can be natural or synthetic and are largely used in several applications due to their versatile properties. Polymers can vary widely in their properties and applications, and they are a fundamental part of our everyday life. Polypropylene (PP) is a thermoplastic polymer from the polyolefin family. ...  Read More

Simulation & Modeling
Magnesium alkoxide precursor to Ziegler-Natta catalyst - emphasis on morphology studies through computer vision approach

Yogeshwar N Thakare; Ajay V Kothari; Saurabh Shinde; Pooja Kadam; Natarajan Venkateswaran; Virendrakumar Gupta

Volume 11, Issue 2 , May 2024, , Pages 71-82

https://doi.org/10.22063/poj.2023.3514.1283

Abstract
  MgCl2 supported Ti catalyst is used in commercial propylene polymerization process. Morphology is a key performance determination parameter for polymer resins produced by commercial olefin polymerization process. Higher resin flowability and bulk density (greater than 0.38g/cc) are demonstrated by ‘good’ ...  Read More

Simulation & Modeling
Molecular dynamics simulation for polyethylene crystallization: Effect of long chain branches

Jieqi Wang; Li Zhao; Minju Song; Fenge Hu; Xuelian He

Volume 8, Issue 2 , July 2021, , Pages 73-84

https://doi.org/10.22063/poj.2021.2834.1173

Abstract
  The influence of long branches on crystallization behavior has been studied by means of molecular dynamics simulations. Using two systems: polyethylene (PE) with long branches (LCB-PE) and PE without long branches (linear-PE) with the same molecular weight, we have examined the crystallization behavior ...  Read More

Simulation & Modeling
Kinetic study on liquid propylene polymerization using a modified heat flow reaction calorimeter

Mehrsa Emami; Farzin Hormozi; Hossein Abedini

Volume 8, Issue 2 , July 2021, , Pages 123-133

https://doi.org/10.22063/poj.2021.2823.1172

Abstract
  Bulk phase polymerization of propylene with a 4th generation of Ziegler-Natta catalyst was kinetically investigated by means of heat flow calorimetry. The assumptions and modifications on isothermal calorimetric method were demonstrated. Our calibration method showed that heat exchange with the reactor ...  Read More

Polymer processing
Effect of process parameters on tensile strength of welds and modeling of laser welding of PA6/NBR/clay nanocomposite by response surface methodology

Moammadreza Nakhaei; Ali Ahmadi; Ghasem Naderi

Volume 7, Issue 2 , July 2020, , Pages 99-110

https://doi.org/10.22063/poj.2020.2599.1147

Abstract
  Polyamide 6 / nitrile butadiene rubber / nanoclay (PA6/NBR/clay) nanocomposite has gathered wide acceptance in industry. Laser welding, as a fabrication method, is applied to welding of polymer nanocomposites. In this study, the input parameters (clay (Closite 30B) content, laser power, scan velocity ...  Read More

Simulation & Modeling
Simulation and modeling of macro and micro components produced by powder injection molding: A review

Rezvan Yavari; Hamid Khorsand; Mehran Sardarian

Volume 7, Issue 1 , January 2020, , Pages 45-60

https://doi.org/10.22063/poj.2019.2568.1141

Abstract
  During the recent years powder processing technologies have gained much attention due to the less energy consumption and recyclable powders. Manufacturing of complicated parts by the conventional powder metallurgy (PM) method is hard due to the uniaxial pressure, which leads to the low design flexibility. ...  Read More

Simulation & Modeling
Development of a rheological model for polymeric fluids based on FENE model

Hossein Ebrahimi; Ahmad Ramazani S.A.; Seyed Mohammad Davachi

Volume 6, Issue 1 , January 2019, , Pages 95-106

https://doi.org/10.22063/poj.2018.2318.1125

Abstract
  Rheological models for polymer solutions and melts based on the finitely extensible non-linear elastic (FENE) dumbbell theory are reviewed in this study. The FENE-P model that is a well-known Peterlin approximation of the FENE model, indicates noticeable deviation from original FENE predictions and also ...  Read More

Simulation & Modeling
Theoretical screening of zeolites for membrane separation of propylene/propane mixtures

Hafez Maghsoudi

Volume 5, Issue 1 , January 2018, , Pages 23-30

https://doi.org/10.22063/poj.2017.1478

Abstract
  In this paper, the performances of potential zeolite membranes were estimated by the Maxwell-Stefan model and then they were placed in Robeson plot of propylene/propane separation. Additionally, the effects of feed pressure and the mole fraction of propylene in the feed on both the propylene ...  Read More

Simulation & Modeling
Two novel methods for synthesizing poly (propylene fumarate): Technical aspects and role of vacuum and N2 purging effects

Sara Shahbazi; Yaser Jafari; Fathollah Moztarzadeh; Gity Mir Mohamad Sadeghi

Volume 4, Issue 1 , January 2017, , Pages 27-41

https://doi.org/10.22063/poj.2016.1354

Abstract
  Poly (propylene fumarate) (PPF), a linear unsaturated polyester consisting of alternating propylene glycol and fumaric acid units, can be cured in vivo to fill the skeletal defects with minimal surgical intervention. Many different methods have been reported for synthesizing PPF, but none of them gives ...  Read More

Reaction engineering
Modelling the catalyst fragmentation pattern in relation to molecular properties and particle overheating in olefin polymerization

Mohsen Najafi; Mahmoud Parvazinia; Mir Hamid Reza Ghoreishy

Volume 1, Issue 2 , December 2014, , Pages 77-91

https://doi.org/10.22063/poj.2014.1044

Abstract
  A two-dimensional single particle finite element model was used to examine the effects of particle fragmental pattern on the average molecular weights, polymerization rate and particle overheating in heterogeneous Ziegler-Natta olefin polymerization. A two-site catalyst kinetic mechanism was employed ...  Read More