With the collaboration of Iran Polymer Society
Structure and property relationship
Influence of mold temperature and annealing on the microstructure and mechanical properties of ESO-plasticized PP/CL composites

Buncha Suksut; Pathamanat Poonkasem; Sirirat Prasittinawa; Patcharapon Somdee

Volume 11, Issue 4 , December 2024, , Pages 265-275

https://doi.org/10.22063/poj.2024.35569.1330

Abstract
  Composites of polypropylene (PP) and calcium lactate (CL) with a constant weight percentage of 60% and 40%, respectively, were compounded with 3, 5 and 7 phr of epoxidized soybean oil (ESO) plasticizer using an internal mixer. The testing samples were prepared using an injection molding technique. The ...  Read More

Structure and property relationship
Finely-tuned strength-toughness balance of PPR/ UHMWPE blends via shear-enhanced crystal orientation and cocrystal-locked UHMPE particles

Zhijie Zhao; Ping Hai; Minjuan Zhang; Yongbiao Zheng; Yuerong Chen; Cunling Long; Hongtao Zhang; Xinyi Zhang

Volume 11, Issue 3 , August 2024, , Pages 187-198

https://doi.org/10.22063/poj.2024.3605.1303

Abstract
  The presence of ultrahigh molecular weight species in polymer melt facilitates the formation of highly-oriented crystalline structures and favors the improvement of mechanical properties. However, due to the random copolymer chain architecture, it is difficult to obtain high orientation of crystals for ...  Read More

Structure and property relationship
Effect of quenching temperature and filler rate on the mechanical thermal and physical properties of composites: Polypropylene/calcium carbonate

Leila Latreche; Samira Maou; Lokmane-Taha Abdi; Tahir Habila; Yazid Meftah

Volume 11, Issue 1 , February 2024, , Pages 11-19

https://doi.org/10.22063/poj.2023.3412.1268

Abstract
  Polypropylene (PP) is a strong, tough, crystalline thermoplastic material with high performance. Because of its diverse thermo-physical and mechanical properties, it is utilized in a wide variety of disciplines. In this study, the impact of free quenching on the thermo-physical characteristics of PP/calcium ...  Read More

Structure and property relationship
The relationship among changes in microstructure, active sites behavior and properties in the propylene polymerization with a 4th generation Ziegler-Natta catalyst

Shokoufeh Hakim; Mehdi Nekoomanesh; Ali Shahrokhinia

Volume 6, Issue 2 , June 2019, , Pages 139-150

https://doi.org/10.22063/poj.2019.2337.1127

Abstract
  Three polypropylene samples (1-3) were synthesized with a 4th generation Ziegler-Natta catalyst in the presence of cyclohexyldimethoxymethylsilane (donor c), dicyclopenthyldimethoxysilane (donor d) and diisopropyldimethoxysilane (donor p), respectively, as external electron donors. The physical properties ...  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

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

Structure and property relationship
Evaluation of hydrophilic properties of acrylonitrile/acrylic acid copolymer films dendrigrafted with citric acid

Somaye Akbari; Niloofar Eslahi; Mohammad Haghighat Kish

Volume 4, Issue 2 , June 2017, , Pages 213-220

https://doi.org/10.22063/poj.2017.1436

Abstract
  The present study investigates the hydrophilic properties of acrylonitrile/acrylic acid P(AN/AA) copolymer films with various acrylic acid (AA) contents dendrigrafted with citric acid from zero to fourth generation numbers. It was found that the hydrophilicity of the dendrigrafted films was a complicated ...  Read More

Structure and property relationship
Electrical properties of UHMWPE/graphite nanoplates composites obtained by in-situ polymerization method

Igor Chmutin; Ludmila Novokshonova; Petr Brevnov; Guzel Yukhayeva; Natalia Ryvkina

Volume 4, Issue 1 , January 2017, , Pages 1-12

https://doi.org/10.22063/poj.2016.1384

Abstract
  There are described nanocomposites based on ultra high molecular weight polyethylene and graphite nanoplates prepared by in-situ polymerization method. It is carried out a comprehensive study of electric properties of these composites, including direct current (dc) and alternating current (ac) properties. ...  Read More

Structure and property relationship
Electrical and electromagnetic properties of isolated carbon nanotubes and carbon nanotube-based composites

Alireza Nikfarjam; Roham Rafiee; Mostafa Taheri

Volume 4, Issue 1 , January 2017, , Pages 43-68

https://doi.org/10.22063/poj.2016.1371

Abstract
  Isolated carbon nanotubes (CNTs), CNT films and CNT-polymer nanocomposites are a new generation of materials with outstanding mechanical, thermal, electrical and electromagnetic properties. The main objective of this article is to provide a comprehensive review on the investigations performed in the ...  Read More

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

Structure and property relationship
Influence of annealing on anisotropic crystalline structure of HDPE cast films

Ali Yadegari; Jalil Morshedian; Hossein-Ali Khonakdar; Udo Wagenknecht

Volume 3, Issue 1 , January 2016, , Pages 1-9

https://doi.org/10.22063/poj.2016.1269

Abstract
  High density polyethylene (HDPE) films were produced using cast film extrusion process with different draw ratios, ranging from 16.9 to 148.8. Morphology, crystallinty and orientation state of crystalline and amorphous phases of the cast films were investigated using scanning electron microscopy (SEM), ...  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

Polyolefin degradation
The role of 1-hexene comonomer content in thermal behavior of medium density polyethylene (MDPE) synthesized using Phillips catalyst

Abbas Kebritchi; Mehdi Nekoomanesh; Fereidoon Mohammadi; Hossein Ali Khonakdar

Volume 1, Issue 2 , December 2014, , Pages 117-129

https://doi.org/10.22063/poj.2014.1099

Abstract
  In this work, the role of comonomer content of 1-hexene-medium density polyethylene (MDPE) copolymer, synthesized using Phillips catalyst, on thermal behavior parameters such as: crystallization, melting temperature and thermal degradation was investigated in detail. The copolymer was fractionated to ...  Read More

Catalysis
Propene-cycloolefin polymerization

Laura Boggioni; Incoronata Tritto

Volume 1, Issue 1 , January 2014, , Pages 61-75

https://doi.org/10.22063/poj.2014.891

Abstract
  Highly active metallocenes and other single site catalysts have opened up the possibility of polymerizing cycloolefins such as norbornene (N) or of copolymerizing them with ethene (E) or propene (P). The polymers obtained show exciting structures and properties. E-N copolymers are industrially produced ...  Read More