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Jani F, Sepahi A, Afzali SK, Houshmand Moayed S. Experimental study on the effect of molecular weight and chemical composition distribution on the mechanical response of high‐density polyethylene. POLYM ENG SCI 2022. [DOI: 10.1002/pen.26196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Farzad Jani
- Department of Research and Development Jam Petrochemical Company Asaluyeh Iran
| | - Abdolhannan Sepahi
- Department of Research and Development Jam Petrochemical Company Asaluyeh Iran
| | - Seyyed Kamal Afzali
- Department of Research and Development Jam Petrochemical Company Asaluyeh Iran
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2
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Shundo A, Aoki M, Yamamoto S, Tanaka K. Effect of Cross-Linking Density on Horizontal and Vertical Shift Factors in Linear Viscoelastic Functions of Epoxy Resins. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01293] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Atsuomi Shundo
- Department of Automotive Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Mika Aoki
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Satoru Yamamoto
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department of Automotive Science, Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
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3
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Anwar M, Graham RS. Molecular dynamics simulations of crystal nucleation in entangled polymer melts under start-up shear conditions. J Chem Phys 2019; 150:084905. [DOI: 10.1063/1.5082244] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Muhammad Anwar
- School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Richard S. Graham
- School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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4
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Interference of Biodegradable Plastics in the Polypropylene Recycling Process. MATERIALS 2018; 11:ma11101886. [PMID: 30279367 PMCID: PMC6213196 DOI: 10.3390/ma11101886] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/25/2018] [Accepted: 09/28/2018] [Indexed: 11/18/2022]
Abstract
Recycling polymers is common due to the need to reduce the environmental impact of these materials. Polypropylene (PP) is one of the polymers called ‘commodities polymers’ and it is commonly used in a wide variety of short-term applications such as food packaging and agricultural products. That is why a large amount of PP residues that can be recycled are generated every year. However, the current increasing introduction of biodegradable polymers in the food packaging industry can negatively affect the properties of recycled PP if those kinds of plastics are disposed with traditional plastics. For this reason, the influence that generates small amounts of biodegradable polymers such as polylactic acid (PLA), polyhydroxybutyrate (PHB) and thermoplastic starch (TPS) in the recycled PP were analyzed in this work. Thus, recycled PP was blended with biodegradables polymers by melt extrusion followed by injection moulding process to simulate the industrial conditions. Then, the obtained materials were evaluated by studding the changes on the thermal and mechanical performance. The results revealed that the vicat softening temperature is negatively affected by the presence of biodegradable polymers in recycled PP. Meanwhile, the melt flow index was negatively affected for PLA and PHB added blends. The mechanical properties were affected when more than 5 wt.% of biodegradable polymers were present. Moreover, structural changes were detected when biodegradable polymers were added to the recycled PP by means of FTIR, because of the characteristic bands of the carbonyl group (between the band 1700–1800 cm−1) appeared due to the presence of PLA, PHB or TPS. Thus, low amounts (lower than 5 wt.%) of biodegradable polymers can be introduced in the recycled PP process without affecting the overall performance of the final material intended for several applications, such as food packaging, agricultural films for farming and crop protection.
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5
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Wu Y, Yao K, Nie H, He A. Confirmation on the compatibility between cis-1,4-polyisoprene and trans-1,4-polyisoprene. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Jozaghkar MR, Jahani Y, Arabi H, Ziaee F. Effect of Polyethylene Molecular Architecture on the Dynamic Viscoelastic Behavior of Polyethylene/Polyhexene-1 Blends and Its Correlation with Morphology. POLYM-PLAST TECH MAT 2018. [DOI: 10.1080/03602559.2018.1493125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - Yousef Jahani
- Faculty of Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Hassan Arabi
- Faculty of Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Farshid Ziaee
- Faculty of Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
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7
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Marashdeh WF, Iroh JO. Viscoelastic behavior and construction of master curve for graphene/polyimide nanocomposites. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008316665159] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dynamic mechanical spectroscopy is used to investigate the variation of the glass rubbery transition temperature ( Tg) of graphene/polyimide nanocomposites. The Tg was obtained as the temperature corresponding to the peak of the tan δ versus temperature curve for the alpha transition. Cole–Cole curve was constructed for the matrix and the composites composite at 1 Hz and a hemispherical curve was obtained suggesting that the constituents have similar relaxation behavior. The time–temperature superposition principle was used to model the behavior of the nanocomposites at lower frequencies and longer times. Frequency sweep was performed in the range of 0.05–100 Hz at different temperatures. The storage modulus curves obtained at different temperatures (isothermal), as a function of frequency, were shifted horizontally to construct a continuous master curve. Both the generalized reduced gradient method and the Williams–Landel–Ferry (WLF) equation were used to calculate the activation energy for glass–rubber transition. The universal constants C1 and C2 were determined using the WLF equation. The dependence of relaxation time on temperature was verified.
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Affiliation(s)
- Wajeeh F Marashdeh
- Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH, USA
| | - Jude O Iroh
- Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH, USA
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8
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Kim YH, Kwon SH, Choi HJ, Choi K, Kao N, Bhattacharya SN, Gupta RK. Thermal, Mechanical, and Rheological Characterization of Polylactic Acid/Halloysite Nanotube Nanocomposites. J MACROMOL SCI B 2016. [DOI: 10.1080/00222348.2016.1187054] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Rinawa K, Maiti SN, Sonnier R, Lopez Cuesta JM. Dynamic rheological studies and applicability of time–temperature superposition principle for PA12/SEBS-g-MA blends. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1467-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Jahani Y, Farahani M, Arabi H, Ahmadjo S. The Influence of Copolymerization Condition on Rheology, Morphology and Thermal Behavior of Polypropylene Heterophasic Copolymers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1039325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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He P, Chen B, Yu W, Zhou C. Liquid–solid transition in mesophase separated olefin multiblock copolymers during crystallization. RSC Adv 2015. [DOI: 10.1039/c5ra05030h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A delayed liquid–solid transition has been found in strongly segregated olefin multiblock copolymers, compared to that in weakly segregated systems.
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Affiliation(s)
- Peng He
- Advanced Rheology Institute
- Department of Polymer Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Bin Chen
- Advanced Rheology Institute
- Department of Polymer Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Wei Yu
- Advanced Rheology Institute
- Department of Polymer Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Chixing Zhou
- Advanced Rheology Institute
- Department of Polymer Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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12
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Chevallier C, Becquart F, Benoit C, Majeste JC, Taha M. In the melt, grafting of polycarbonate onto polystyrene- block
-poly(ethylene-butylene)- block
-polystyrene- grafted
-maleic anhydride: Reactive extrusion. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Celine Chevallier
- Université de Lyon; F-42023 Saint-Etienne France
- CNRS; UMR 5223, Ingénierie des Matériaux Polymères, F-42023 Saint-Etienne France
- Université de Saint-Etienne; Jean Monnet F-42023 Saint-Etienne France
| | - Frederic Becquart
- Université de Lyon; F-42023 Saint-Etienne France
- CNRS; UMR 5223, Ingénierie des Matériaux Polymères, F-42023 Saint-Etienne France
- Université de Saint-Etienne; Jean Monnet F-42023 Saint-Etienne France
| | - Cyril Benoit
- Université de Lyon; F-42023 Saint-Etienne France
- CNRS; UMR 5223, Ingénierie des Matériaux Polymères, F-42023 Saint-Etienne France
- Université de Saint-Etienne; Jean Monnet F-42023 Saint-Etienne France
| | - Jean-Charles Majeste
- Université de Lyon; F-42023 Saint-Etienne France
- CNRS; UMR 5223, Ingénierie des Matériaux Polymères, F-42023 Saint-Etienne France
- Université de Saint-Etienne; Jean Monnet F-42023 Saint-Etienne France
| | - Mohamed Taha
- Université de Lyon; F-42023 Saint-Etienne France
- CNRS; UMR 5223, Ingénierie des Matériaux Polymères, F-42023 Saint-Etienne France
- Université de Saint-Etienne; Jean Monnet F-42023 Saint-Etienne France
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13
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Ardakani F, Jahani Y, Morshedian J. Effect of electron beam irradiation dose on the rheology, morphology, and thermal properties of branched polypropylene/polybutene-1 blend. POLYM ENG SCI 2013. [DOI: 10.1002/pen.23716] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Farzaneh Ardakani
- Faculty of Processing; Iran Polymer and Petrochemical Institute; Tehran Iran
| | - Yousef Jahani
- Faculty of Processing; Iran Polymer and Petrochemical Institute; Tehran Iran
| | - Jalil Morshedian
- Faculty of Processing; Iran Polymer and Petrochemical Institute; Tehran Iran
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14
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Souza AMCD, Calvão PS, Demarquette NR. Linear viscoelastic behavior of compatibilized PMMA/PP blends. J Appl Polym Sci 2012. [DOI: 10.1002/app.38809] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Ardakani F, Jahani Y, Morshedian J. Dynamic viscoelastic behavior of polypropylene/polybutene-1 blends and its correlation with morphology. J Appl Polym Sci 2011. [DOI: 10.1002/app.36324] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Hardikar NA, Bobba S, Jha R. Applicability of time temperature superposition principle to an immiscible blend of polyphenyleneoxide and polyamide. JOURNAL OF POLYMER ENGINEERING 2011. [DOI: 10.1515/polyeng.2011.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The immiscible blend of polyphenyleneoxide (PPO) and polyamide (PA) is used in several applications exposed to high temperature. The complexity of numerical modeling of such materials is dependent on their thermorheological behavior with significant simplification possibilities, if the material is found to follow the time temperature superposition (TTS) principle and show thermorheological simplicity (TRS). Hence as a precursor to selecting accurate constitutive modeling approach, the paper investigates the applicability of the TTS principle and the nature of thermorheological behavior to the blend. Dynamic mechanical analysis (DMA)frequency scans were performed in the range of 0.1–100 rad/s from 0°C to 210°C at 10°C intervals. Temperature dependency was observed on the Cole-Cole plot pointing to the thermorheological complexity and the need for vertical shift factors. 2-D minimization algorithm was used to shift the isotherms horizontally and vertically to obtain master curves. Except, in the vicinity of glass transition temperature T
g
, the isotherms overlap to form a master curve, but further analysis considering various conditions indicate that in a strict sense TTS is not applicable to the blend when both storage G′ and loss modulus G″ are considered. However, a continuous master curve of storage modulus spanning 31 decades of time is obtained using horizontal shifting alone when loss modulus is neglected. Further testing is required to ascertain if relaxation modulus can be approximated with storage modulus alone before taking recourse to characterization methods developed for thermorheologically complex (TRC) materials.
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Tabatabaei SH, Carreau PJ, Ajji A. Rheological and thermal properties of blends of a long-chain branched polypropylene and different linear polypropylenes. Chem Eng Sci 2009. [DOI: 10.1016/j.ces.2009.04.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Teertstra SJ, Gauthier M. Viscoelastic Properties of Arborescent Polystyrene-graft-polyisoprene Copolymers. Macromolecules 2007. [DOI: 10.1021/ma0606713] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Steven J. Teertstra
- Department of Chemistry, Institute for Polymer Research, University of Waterloo, Ontario, Canada N2L 3G1
| | - Mario Gauthier
- Department of Chemistry, Institute for Polymer Research, University of Waterloo, Ontario, Canada N2L 3G1
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19
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Li G, Matsuda T, Nishioka A, Liang K, Masubuchi Y, Koyama K, Pittman CU. Rheological properties of poly(methyl methacrylate)/rigid ladderlike polyphenylsilsesquioxane blends. J Appl Polym Sci 2007. [DOI: 10.1002/app.24492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Phase Behavior and its Viscoelastic Responses of Poly(methyl methacrylate) and Poly(styrene-co-maleic anhydride) Blend Systems. Polym Bull (Berl) 2006. [DOI: 10.1007/s00289-005-0499-6] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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