With the collaboration of Iran Polymer Society
Structure and property relationship
Effect of multi-walled carbon nanotube on mechanical and rheological properties of silane modified EPDM rubber

Fateme Khademeh Molavi; Sedigheh Soltani; Ghasem Naderi; Rohollah Bagheri

Volume 3, Issue 2 , June 2016, Pages 69-77

https://doi.org/10.22063/poj.2016.1293

Abstract
  A novel mixing approach for achieving a good dispersion of multi-walled carbon nanotubes (MWCNTs) in ethylene- propylene diene monomer (EPDM) matrix has been investigated. In this approach EPDM was modified with vinyltrimethoxysilane (VTMS) during melt mixing. In addition the effect of MWCNT concentration ...  Read More

Catalysis
Morphology control of clay-mineral particles as supports for metallocene catalysts in propylene polymerization

Takao Tayano; Takehiro Sagae; Takashi Atsumi; Hideshi Uchino; Masahide Murata; Tsutomu Sato

Volume 3, Issue 2 , June 2016, Pages 79-92

https://doi.org/10.22063/poj.2016.1291

Abstract
  Spray dry granulation of clay minerals was studied to obtain clay mineral base support material for metallocene supported olefin polymerization catalysts. The morphology of the granules was strongly influenced by the nature of the clay mineral itself. Because of swelling characteristics of montmorillonite, ...  Read More

Polyolefin degradation
Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing

Larissa Stieven Montagna; Ana Paula Testa Pezzin; Maria Madalena Forte; Ruth Marlene Santana

Volume 3, Issue 2 , June 2016, Pages 93-101

https://doi.org/10.22063/poj.1999.1340

Abstract
  In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an organic ...  Read More

Catalysis
Imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalysts for ethylene polymerization and ethylene/1-hexene copolymerization

Ting Fu; Ruihua Cheng; Xuelian He; Zhen Liu; Zhou Tian; Boping Liu

Volume 3, Issue 2 , June 2016, Pages 103-117

https://doi.org/10.22063/poj.2016.1331

Abstract
  A novel imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalyst for ethylene and ethylene/1-hexene polymerization is investigated. The catalyst is prepared by modification of (SiO2/MgO/MgCl2)TiClx Ziegler-Natta catalysts via supporting vanadium species followed by reaction with p-tolyl isocyanate ...  Read More

Characterization
Quantification of identical and unique segments in ethylene-propylene copolymers using two dimensional liquid chromatography with infra-red detection

Sampat Bhati; Tibor Macko; Robert Brüll

Volume 3, Issue 2 , June 2016, Pages 119-133

https://doi.org/10.22063/poj.2016.1323

Abstract
  Hyphenating High Temperature High Performance Liquid Chromatography (HT-HPLC) with High Temperature Size Exclusion Chromatography (HT-SEC) (High Temperature Two Dimensional Liquid Chromatography (HT-HPLC x HT-SEC or HT 2D-LC)) leads to an isocratic elution in the second dimension, which in turn enables ...  Read More

Characterization
Evaluation of continuous and discrete melting endotherms in determination of structural heterogeneities in Ziegler-Natta catalyzed linear low density polyethylene

Mostafa Ahmadi; Seyed Mohammad Mehdi Mortazavi; Saeid Ahmadjo; Majid Zahmati; Khosrow Valieghbal; Davoud Jafarifar; Reza Rashedi

Volume 3, Issue 2 , June 2016, Pages 135-146

https://doi.org/10.22063/poj.2016.1332

Abstract
  Ethylene / 1-butene copolymers at different comonomer levels were synthesized using Ziegler-Natta catalyst to evaluate the applicability of thermal fractionation methods in predicting chemical composition distribution (CCD). The continuous melting endotherms by DSC were converted to continuous CCD, and ...  Read More