With the collaboration of Iran Polymer Society
Olefin polymerization and copolymerization
A practical criterion for synthesizing ethylen-1-butene copolymer in powder form in slurry polymerization with a Ziegler-Natta catalyst and predicting its incorporated 1-butene

Mohsen Javaheri; Mehdi Nekoomanesh; Yousef Jahani

Volume 10, Issue 4 , November 2023, , Pages 243-251

https://doi.org/10.22063/poj.2023.3485.1281

Abstract
  The concentration of ethylene and 1-butene in n-hexane as polymerization media was calculated at five different pressure levels (4, 6, 8, 10, and 12 bar) and four different 1-butene concentrations (0.13, 0.26, 0.39, and 0.52 mol/L) in n-hexane at T= 80°C using the Peng-Robinson thermodynamic equation ...  Read More

Polyolefins Functionalization
Comparison of grafting of maleic anhydride onto linear low density polyethylene with hexene-1 and butene-1 comonomers and prediction of optimum ingredients by response surface methodology

Mohammad Shahbazi; Yousef Jahani

Volume 8, Issue 1 , January 2021, , Pages 11-19

https://doi.org/10.22063/poj.2020.2745.1163

Abstract
  In this work, the grafting of maleic anhydride onto two types of linear low density polyethylene with hexene-1 comonomer (LLDPE-H1) and butene-1 comonomer (LLDPE-B1), in the presence of styrene monomer (St) and dicumyl peroxide initiator (DCP) has been studied. The combined influences of MAH, St and ...  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

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

Structure and property relationship
The effect of high-energy electron beam on drawn and undrawn high density polyethylene fibers

Jalil Morshedian; Yousef Jahani; Farshad Sharbafian; Foroogh Sadat Zarei

Volume 2, Issue 2 , June 2015, , Pages 109-119

https://doi.org/10.22063/poj.2015.1166

Abstract
  HDPE monofilaments were obtained using different extruders and drawn by post-extruder equipments. After solidification, drawn and undrawn monofilaments (draw ratio 7:1) were irradiated with 10 MeV electron beams in air at room temperature at 25, 50, 75, 100 and 125 kGy dose ranges to induce a network ...  Read More