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

Polyolefin blends
Correlation of morphology, rheology, and impact strength in compatibilized polypropylene/ polybutadiene rubber thermoplastic vulcanizates

Somayeh Rafiei; Davood Soudbar; Minoo Sadri; Fatemeh Shafiei

Volume 11, Issue 3 , August 2024, , Pages 137-148

https://doi.org/10.22063/poj.2024.3606.1304

Abstract
  Thermoplastic vulcanizates (TPVs) were prepared based on polypropylene (PP) and polybutadiene rubber (PBR) at different PP/PBR compositions (70/30 and 60/40). PP-grafted-maleic anhydride (PP-g-MA) was introduced into the TPVs at different concentrations (10 and 20%). The compatibilizing effect of PP-g-MA ...  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

Characterization
LDPE and poly(1-butene) blends: Morphology, crystallinity and rheological properties

Reza Poorghasemi; Yousef Jahani

Volume 8, Issue 1 , January 2021, , Pages 21-30

https://doi.org/10.22063/poj.2020.2759.1164

Abstract
  In this work, the compatibility and crystallinity of low density polyethylene (LDPE) and polybutene-1 (PB-1) blends were studied. Various blends of LDPE/PB-1 containing 5, 10 and 20 wt.% PB-1 were prepared in a corotating twin-screw extruder and characterized by scanning electron microscopy (SEM), shear ...  Read More

Polymeric foams
Hydophilic polypropylene microporous membrane for using in a membrane bioreactor system and optimization of preparation conditions by response surface methodology

Hossein Hazrati; Nader Jahanbakhshi; Mohammad Rostamizadeh

Volume 5, Issue 2 , June 2018, , Pages 97-109

https://doi.org/10.22063/poj.2017.1945.1104

Abstract
  In this study, the response surface methodology (RSM) based on the central composite design (CCD) was used to optimize the preparation condition of polypropylene-grafted maleic anhydride (PP-g-MA) microporous membrane by thermally-induced phase separation (TIPS) method. A mixture of dibutyl phthalate ...  Read More

Polymer processing
Inhibition effect of polyvinyl butyral on crystallization of polypropylene

Jun Huang; Guanghua Tian; Huayi Li; Lei Li; Qian Li; He Huang; Shuirong Zheng; Youliang Hu

Volume 5, Issue 2 , June 2018, , Pages 141-151

https://doi.org/10.22063/poj.2018.1979.1106

Abstract
  In this work, a series of polypropylene/polyvinyl butyral (PP/PVB) blends were prepared by melt-blending process, at PVB loadings 3 wt%, 10 wt%, and 30 wt%. The effects of PVB on crystallization behavior of PP were investigated by differential scanning calorimetry (DSC), and polarized optical ...  Read More

Structure and property relationship
Role of covalent bond formation in morphology and properties of PP/PP-g-PS binary blends

Qian Li; Yongjie Zhang; Huayi Li; Zhongchuan Peng; Yu Zhang; Youliang Hu

Volume 5, Issue 1 , January 2018, , Pages 85-95

https://doi.org/10.22063/poj.2017.1879.1100

Abstract
  PP-g-PS copolymer is a typical compatilizer used in polypropylene and polystyrene immiscible blends. PP-g-PS copolymers with different side chain lengths were synthesized, and their thermal and mechanical properties were characterized by differential scanning calorimetry (DSC), polarizing optical microscopy ...  Read More

Catalysis
Probing into morphology evolution of magnesium ethoxide particles as precursor of Ziegler-Natta catalysts

Goond Hongmanee; Patchanee Chammingkwan; Toshiaki Taniike; Minoru Terano

Volume 3, Issue 1 , January 2016, , Pages 47-57

https://doi.org/10.22063/poj.2016.1266

Abstract
  Mg(OEt)2 with spherical morphology is one of the most important precursors for the preparation of industrial Ziegler-Natta catalysts. In the present article, morphology evolution of Mg(OEt)2 particles is studied in the course of the synthesis. The morphology of Mg(OEt)2 particles is observed throughout ...  Read More

Characterization
An investigation on non-isothermal crystallization behavior and morphology of polyamide 6/ poly(ethylene-co-1-butene)-graft-maleic anhydride/organoclay nanocomposites

Sepideh Gomari; Ismaeil Ghasemi; Mohammad Karrabi; Hamed Azizi

Volume 2, Issue 2 , June 2015, , Pages 99-108

https://doi.org/10.22063/poj.2015.1164

Abstract
  Nanocomposites based on polyamide 6 (PA6) and poly(ethylene-co-1-butene)-graft-maleic anhydride (EB-g- MAH) blends have been prepared via melt mixing. The effect of blend ratio and organoclay concentration on the crystallization and melting behavior of specimens were studied. Three types of commercial ...  Read More