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Wang YX, Zou CY, Bai N, Su QF, Song LX, Li XL. Effect of Octene Block Copolymer (OBC) and High-Density Polyethylene (HDPE) on Crystalline Morphology, Structure and Mechanical Properties of Octene Random Copolymer. Polymers (Basel) 2023; 15:3655. [PMID: 37765509 PMCID: PMC10536738 DOI: 10.3390/polym15183655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/25/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Blending octene random copolymer (ORC) with other polymers is a promising approach to improving ORC mechanical properties, such as tensile strength and elongation. In this study, octene block copolymer (OBC) with lower density than ORC and high-density polyethylene (HDPE) were used to blend with ORC. The effect of both OBC and HDPE on ORC was analyzed using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and small-angle X-ray scattering (SAXS). For ORC/OBC blends, a small amount of OBC can improve the crystallization ability of ORC. Meanwhile, for ORC/HDPE blends, the crystallization ability of ORC was significantly suppressed, attributed to good compatibility between ORC and HDPE as indicated by the homogeneous morphology and the disappearance of the α transition peak of ORC in ORC/HDPE blends. Therefore, the tensile strength and elongation of ORC/HDPE blends are significantly higher than those of ORC/OBC blends. For ORC/OBC/HDPE ternary blends, we found that when ORC:OBC:HDPE are at a ratio of 70:15:15, cocrystallization is achieved. Although HDPE improves the compatibility of ORC and OBC, the three-phase structure of the ternary blends can be observed through SAXS when HDPE and OBC exceed 30 wt%. Blending HDPE and OBC (≤30 wt%) could improve the mechanical property of ORC.
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Affiliation(s)
- Yuan-Xia Wang
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang 110142, China
- Advanced Manufacturing Institute of Polymer Industry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Cun-Ying Zou
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang 110142, China
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Nan Bai
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang 110142, China
- Advanced Manufacturing Institute of Polymer Industry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Qun-Feng Su
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang 110142, China
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Li-Xin Song
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang 110142, China
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xian-Liang Li
- Polymer High Functional Film Engineering Research Center of Liaoning Province, Shenyang 110142, China
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
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2
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Bai N, Shi Y, Wang YX, Liu LZ, Song LX, Wang CC, Song LF. Effects of nano-silica on the crystallization, structure, and mechanical properties of crosslinked ethylene-octene copolymer/nano-silica composites. JOURNAL OF POLYMER ENGINEERING 2023. [DOI: 10.1515/polyeng-2022-0199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Abstract
Nano-silica (SiO2) has been widely used to fill rubbers (crosslinked) and usual polyolefin elastomers (POEs). SiO2 filled POE with crystalline structure can also be crosslinked. Crystallization, structure, and mechanical properties of crosslinked POE/SiO2 composites can be affected by SiO2. In this paper, crosslinked POE/SiO2 composites were obtained through two different methods: dynamic crosslinking in molten state and static crosslinking. For the non-crosslinked and static crosslinked composites, SiO2 had a more significant effect on the nucleation in non-crosslinked POE than in static crosslinked POE. For the dynamic crosslinked composite, SiO2 and crosslinking points hindered the mobility of POE chains and suppressed the POE crystallization, resulting in smaller and fewer crystals. Dynamic mechanical analysis showed that the SiO2 and POE were compatible, as evidenced by the lower tan(δ) value in SiO2-filled samples. The latter was more consistent with the higher tensile strength and elongation at break for the non-crosslinked and static crosslinked composites than for the non-filled samples. However, the dynamic crosslinked composite exhibited the worst elongation at break, resulting from the lowest number of crystals and shortened molecular chains due to the shearing that occurred during crosslinking process. The SiO2 had no observable effect on the permanent deformation of samples.
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3
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Doan TTL, Müller MT, Nguyen HM. Effects of different polyolefin copolymers on properties of melt mixed polypropylene blends. J Appl Polym Sci 2022. [DOI: 10.1002/app.52691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thi Thu Loan Doan
- The University of Danang ‐ University of Science and Technology Da Nang Vietnam
| | | | - Hoang M. Nguyen
- The University of Danang ‐ University of Science and Technology Da Nang Vietnam
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4
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Zanchin G, Leone G. Polyolefin thermoplastic elastomers from polymerization catalysis: Advantages, pitfalls and future challenges. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2020.101342] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Leone G, Zanchin G, Di Girolamo R, De Stefano F, Lorber C, De Rosa C, Ricci G, Bertini F. Semibatch Terpolymerization of Ethylene, Propylene, and 5-Ethylidene-2-norbornene: Heterogeneous High-Ethylene EPDM Thermoplastic Elastomers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01123] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Giuseppe Leone
- CNR, Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), via A. Corti 12, I-20133 Milano, Italy
| | - Giorgia Zanchin
- CNR, Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), via A. Corti 12, I-20133 Milano, Italy
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli “Federico II”, Complesso Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Fabio De Stefano
- Dipartimento di Scienze Chimiche, Università di Napoli “Federico II”, Complesso Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Christian Lorber
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP44099, 31077 Toulouse, France
- UPS, INPT, LCC, Université de Toulouse, 31077 Toulouse, France
| | - Claudio De Rosa
- Dipartimento di Scienze Chimiche, Università di Napoli “Federico II”, Complesso Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Giovanni Ricci
- CNR, Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), via A. Corti 12, I-20133 Milano, Italy
| | - Fabio Bertini
- CNR, Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), via A. Corti 12, I-20133 Milano, Italy
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6
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Surface Modification of Fumed Silica by Plasma Polymerization of Acetylene for PP/POE Blends Dielectric Nanocomposites. Polymers (Basel) 2019; 11:polym11121957. [PMID: 31795227 PMCID: PMC6960918 DOI: 10.3390/polym11121957] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/08/2019] [Accepted: 11/26/2019] [Indexed: 11/17/2022] Open
Abstract
Novel nanocomposites for dielectric applications-based polypropylene/poly(ethylene-co-octene) (PP/POE) blends filled with nano silica are developed in the framework of the European ‘GRIDABLE’ project. A tailor-made low-pressure-plasma reactor was applied in this study for an organic surface modification of silica. Acetylene gas was used as the monomer for plasma polymerization in order to deposit a hydrocarbon layer onto the silica surface. The aim of this modification is to increase the compatibility between silica and the PP/POE blends matrix in order to improve the dispersion of the filler in the polymer matrix and to suppress the space charge accumulation by altering the charge trapping properties of these silica/PP/POE blends composites. The conditions for the deposition of the acetylene plasma-polymer onto the silica surface were optimized by analyzing the modification in terms of weight loss by thermogravimetry (TGA). X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray fluorescence spectroscopy (EDX) measurements confirmed the presence of hydrocarbon compounds on the silica surface after plasma modification. The acetylene plasma modified silica with the highest deposition level was selected to be incorporated into the PP/POE blends matrix. X-ray diffraction (XRD) showed that there is no new crystal phase formation in the PP/POE blends nanocomposites after addition of the acetylene plasma modified silica. Differential scanning calorimetry results (DSC) show two melting peaks and two crystallization peaks of the PP/POE blends nanocomposites corresponding to the PP and POE domains. The improved dispersion of the silica after acetylene plasma modification in the PP/POE blends matrix was shown by means of SEM–EDX mapping. Thermally stimulated depolarization current (TSDC) measurements confirm that addition of the acetylene plasma modified silica affects the charge trapping density and decreases the amount of injected charges into PP/POE blends nanocomposites. This work shows that acetylene plasma modification of the silica surface is a promising route to tune charge trapping properties of PP/POE blend-based nanocomposites.
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7
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Fang J, Sui X, Li Y, Chen C. Synthesis of polyolefin elastomers from unsymmetrical α-diimine nickel catalyzed olefin polymerization. Polym Chem 2018. [DOI: 10.1039/c8py00725j] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Due to a unique chain walking process, α-diimine nickel catalysts produce variously branched polyolefins using only ethylene as the feedstock.
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Affiliation(s)
- Jun Fang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
| | - Xuelin Sui
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
| | - Yougui Li
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- China
| | - Changle Chen
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
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8
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Lian K, Zhu Y, Li W, Dai S, Chen C. Direct Synthesis of Thermoplastic Polyolefin Elastomers from Nickel-Catalyzed Ethylene Polymerization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01087] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kunbo Lian
- Advanced
Catalysis and Green Manufacturing Collaborative Innovation Center,
School of Pertrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Yun Zhu
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation
Center of Chemistry for Energy Materials), Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Weimin Li
- Advanced
Catalysis and Green Manufacturing Collaborative Innovation Center,
School of Pertrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Shengyu Dai
- Advanced
Catalysis and Green Manufacturing Collaborative Innovation Center,
School of Pertrochemical Engineering, Changzhou University, Changzhou 213164, China
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation
Center of Chemistry for Energy Materials), Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Changle Chen
- CAS
Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation
Center of Chemistry for Energy Materials), Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, China
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10
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Ren Q, Zhang Q, Wang L, Yi J, Feng J. Synergistic Toughening Effect of Olefin Block Copolymer and Highly Effective β-Nucleating Agent on the Low-Temperature Toughness of Polypropylene Random Copolymer. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00140] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qilin Ren
- State
Key Laboratory of Molecular Engineering of Polymers, Department of
Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Qinglong Zhang
- State
Key Laboratory of Molecular Engineering of Polymers, Department of
Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Li Wang
- Institution
of Petrochemical Technology, China National Petroleum Corporation (CNPC), Beijing 100083, P.R. China
| | - Jianjun Yi
- Institution
of Petrochemical Technology, China National Petroleum Corporation (CNPC), Beijing 100083, P.R. China
| | - Jiachun Feng
- State
Key Laboratory of Molecular Engineering of Polymers, Department of
Macromolecular Science, Fudan University, Shanghai 200433, China
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11
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Nie Z, Yu W. Strain accelerated mesophase separation during nonlinear stress relaxation of olefin multiblock copolymer. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.03.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Zhai Y, Zhang R, Yang W, Yang M. Effects of interphase on the dispersion of MWCNTs in ethylene-α-octene copolymers revealed by solid-state NMR spectroscopy. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.02.076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Leone G, Mauri M, Pierro I, Ricci G, Canetti M, Bertini F. Polyolefin thermoplastic elastomers from 1-octene chain-walking polymerization. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Regulation of crystalline morphologies and mechanical properties of olefin multiblock copolymers by blending polymer with similar architecture of constituent blocks. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.07.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Leone G, Mauri M, Bertini F, Canetti M, Piovani D, Ricci G. Ni(II) α-Diimine-Catalyzed α-Olefins Polymerization: Thermoplastic Elastomers of Block Copolymers. Macromolecules 2015. [DOI: 10.1021/ma502427u] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Giuseppe Leone
- Istituto
per lo Studio delle
Macromolecole, CNR-ISMAC, via E. Bassini 15, I-20133 Milano, Italy
| | - Massimiliano Mauri
- Istituto
per lo Studio delle
Macromolecole, CNR-ISMAC, via E. Bassini 15, I-20133 Milano, Italy
| | - Fabio Bertini
- Istituto
per lo Studio delle
Macromolecole, CNR-ISMAC, via E. Bassini 15, I-20133 Milano, Italy
| | - Maurizio Canetti
- Istituto
per lo Studio delle
Macromolecole, CNR-ISMAC, via E. Bassini 15, I-20133 Milano, Italy
| | - Daniele Piovani
- Istituto
per lo Studio delle
Macromolecole, CNR-ISMAC, via E. Bassini 15, I-20133 Milano, Italy
| | - Giovanni Ricci
- Istituto
per lo Studio delle
Macromolecole, CNR-ISMAC, via E. Bassini 15, I-20133 Milano, Italy
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16
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Li T, Pu JH, Ma LF, Bao RY, Qi GQ, Yang W, Xie BH, Yang MB. An extremely uniform dispersion of MWCNTs in olefin block copolymers significantly enhances electrical and mechanical performances. Polym Chem 2015. [DOI: 10.1039/c5py01236h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new guidance for the development of conductive elastomers with improved comprehensive performance by considering chain architecture is provided.
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Affiliation(s)
- Ting Li
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Jun-Hong Pu
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Li-Feng Ma
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Rui-Ying Bao
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Guo-Qiang Qi
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Wei Yang
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Bang-Hu Xie
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
| | - Ming-Bo Yang
- College of Polymer Science and Engineering
- Sichuan University
- State Key Laboratory of Polymer Materials Engineering
- Chengdu
- China
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17
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Structure analysis of ethylene/1-octene copolymers synthesized from living coordination polymerization. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.03.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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