With the collaboration of Iran Polymer Society
Polymer processing
The influence of branching efficiency on the rheology and morphology of melt state long chain branched polypropylene/polybutene-1 blends

Ali Foroozan; Tahereh Behboodi; Yousef Jahani

Volume 6, Issue 1 , January 2019, Pages 1-11

https://doi.org/10.22063/poj.2018.2181.1112

Abstract
  In this study, the compatibility of the blends of polypropylene (PP) and polybutene-1(PB-1) homopolymer before and after long chain branching process were studied. The blends were prepared and long-chain branched directly via reactive extrusion process in presence of free radical initiator and trimethylolpropane ...  Read More

Thermal-insulation performance of low density polyethylene (LDPE) foams: Comparison between two radiation thermal conductivity models

Rezgar Hasanzadeh; Taher Azdast; Ali Doniavi; Richard Eungkee Lee

Volume 6, Issue 1 , January 2019, Pages 13-21

https://doi.org/10.22063/poj.2018.2185.1113

Abstract
  The loss of energy especially in industrial and residential buildings is one of the main reasons of increased energy consumption. Improving the thermal insulation properties of materials is a fundamental method for reducing the energy losses. Polymeric foams are introduced as materials with excellent ...  Read More

Compression, supramolecular organization and free radical polymerization of ethylene gas

Dragoslav Stoiljkovic; Slobodan Jovanović

Volume 6, Issue 1 , January 2019, Pages 23-41

https://doi.org/10.22063/poj.2018.2252.1117

Abstract
  At low pressure, ethylene gas consists of single translating and rotating molecules and behaves as an ideal gas. With decrease of free volume by compression, various rotating supramolecular particles are formed, which require less space for the movement: molecular pairs, bimolecules and oligomolecules. ...  Read More

Polyolefin degradation
Effect of temperature, heating rate and zeolite-based catalysts on the pyrolysis of high impact polystyrene (HIPS) waste to produce fuel-like products

Zaher Tamri; Ali Vaziri Yazdi; Mehdi Nekoomanesh Haghighi; Mehrdad Seifali Abbas-Abadi; Amir Heidarinasab

Volume 6, Issue 1 , January 2019, Pages 43-52

https://doi.org/10.22063/poj.2018.2189.1114

Abstract
  Pyrolysis of high impact polystyrene (HIPS) waste has been investigated under different process parameters, such as temperature, heating rate and types of zeolitic catalysts to produce valuable liquid products. Liquid, gas and coke as products of pyrolysis and aromatic, naphthene, olefin and paraffin ...  Read More

Polymer processing
Electron beam irradiation method to change polypropylene application: Rheology and thermomechanical properties

Fatemeh Hassan; Mehdi Entezam

Volume 6, Issue 1 , January 2019, Pages 53-61

https://doi.org/10.22063/poj.2018.2257.1118

Abstract
  Irradiation of polymers is one of the most effective and economical methods for modifying their properties and for changing their applications. In this study, an extrusion grade polypropylene (PP) was treated by electron beam irradiation to produce a PP suitable for injection molding. Irradiation was ...  Read More

Polymer processing
Embedding neat and carboxylated nanodiamonds into polypropylene membranes to enhance antifouling properties

Shahab Hoseinpour; Yoones Jafarzadeh; Reza Yegani; Sepideh Masoumi

Volume 6, Issue 1 , January 2019, Pages 63-74

https://doi.org/10.22063/poj.2018.2264.1120

Abstract
  The aim of the present work is to enhance the antifouling properties of polypropylene (PP) membrane based on hydrophilicity improvement. Different contents of neat and modified nanodiamond (0.25, 0.50, 0.75 and 1.00 wt.%) were embedded into PP membranes. Nanodiamond nanoparticles were carboxylated by ...  Read More

Structure and property relationship
Compatibilization of polycarbonate/poly (ethylene terephthalate) blends by addition of their transesterification product

Majid Habibollahi; Morteza Ehsani; Jalil Morshedian

Volume 6, Issue 1 , January 2019, Pages 75-83

https://doi.org/10.22063/poj.2018.2271.1121

Abstract
  In this study, poly carbonate (PC) and poly (ethylene terephthalate) (PET) were reactive melt-blended under two different conditions to produce PC/PET copolymers. For each condition, samples were taken at specified mixing times representative a specific structure of copolymers and each one employed to ...  Read More

Olefin polymerization and copolymerization
Synthesis and identification of polystyrene via conventional and controlled radical polymerization methods: Effect of temperature, initiator and transfer agent on molecular weight and reaction rate

Mojtaba Farrokhi; Mahdi Abdollahi

Volume 6, Issue 1 , January 2019, Pages 85-94

https://doi.org/10.22063/poj.2018.2288.1122

Abstract
  Polystyrene (PSt) has been known as one of the important polymers with a wide range of applications. Ability to synthesize PSt with different but predictable molecular weights for various applications is very important in the laboratories and industries. In this study, using various simple and inexpensive ...  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