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Sui Y, Cui Y, Wei P, Cong C, Meng X, Ye HM, Zhou Q. Nanoscale effects of TiO 2 nanoparticles on the rheological behaviors of ultra-high molecular weight polyethylene (UHMWPE). SOFT MATTER 2023. [PMID: 37432653 DOI: 10.1039/d3sm00168g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Considering the molar mass between entanglements to be an intrinsic property of ultra-high molecular weight polyethylene (UHMWPE), the number of entanglements per chain increases with increasing molar mass, correspondingly making the UHMWPE intractable. Herein, we dispersed TiO2 nanoparticles with different characteristics into UHMWPE solutions to disentangle the molecular chains. Compared with the UHMWPE pure solution, the viscosity of the mixture solution declines by 91.22%, and the critical overlap concentration increases from 1 wt% to 1.4 wt%. A rapid precipitation method was utilized to obtain UHMWPE and UHMWPE/TiO2 composites from the solutions. The melting index of UHMWPE/TiO2 is 68.85 mg, which is in sharp contrast to that of UHMWPE which is 0 mg. We characterized the microstructures of UHMWPE/TiO2 nanocomposites using TEM, SAXS, DMA, and DSC. Accordingly, this significant improvement in processability contributed to the reduction of entanglements and a schematic model was proposed to explain the mechanism by which nanoparticles disentangle molecular chains. Simultaneously, the composite demonstrated better mechanical properties than UHMWPE. In summary, we provide a strategy to promote the processability of UHMWPE without sacrificing its outstanding mechanical properties.
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Affiliation(s)
- Yang Sui
- Department of Materials Science and Engineering, New Energy and Material college, China University of Petroleum-Beijing, Beijing 102249, P. R. China.
- Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, P. R. China
| | - Yi Cui
- Department of Materials Science and Engineering, New Energy and Material college, China University of Petroleum-Beijing, Beijing 102249, P. R. China.
- Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, P. R. China
| | - Peng Wei
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Chuanbo Cong
- Department of Materials Science and Engineering, New Energy and Material college, China University of Petroleum-Beijing, Beijing 102249, P. R. China.
- Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, P. R. China
| | - Xiaoyu Meng
- Department of Materials Science and Engineering, New Energy and Material college, China University of Petroleum-Beijing, Beijing 102249, P. R. China.
- Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, P. R. China
| | - Hai-Mu Ye
- Department of Materials Science and Engineering, New Energy and Material college, China University of Petroleum-Beijing, Beijing 102249, P. R. China.
- Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, P. R. China
| | - Qiong Zhou
- Department of Materials Science and Engineering, New Energy and Material college, China University of Petroleum-Beijing, Beijing 102249, P. R. China.
- Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, P. R. China
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Shukla DK, Dey A, Singh A, Tripathi SN, Bonda S, Saha S, Iyer PK, Srivastava VK, Jasra RV. Disentangled ultrahigh molecular weight polyethylene thin film as a transparent substrate for flexible flat panel display. J Appl Polym Sci 2022. [DOI: 10.1002/app.52932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Devesh K. Shukla
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara Gujarat India
| | - Anamika Dey
- Centre for Nanotechnology Indian Institute of Technology Guwahati Guwahati Assam India
| | - Ashish Singh
- Centre for Nanotechnology Indian Institute of Technology Guwahati Guwahati Assam India
- Department of Electronics and Communication Engineering Anurag University Hyderabad Telangana India
| | - Sandeep N. Tripathi
- Reliance Research and Development Centre, Reliance Corporate Park (RCP) Reliance Industries Ltd. Navi Mumbai Maharashtra India
| | - Sateesh Bonda
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara Gujarat India
| | - Sukdeb Saha
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara Gujarat India
| | - Parameswar Krishnan Iyer
- Centre for Nanotechnology Indian Institute of Technology Guwahati Guwahati Assam India
- Department of Chemistry and Center for Nanotechnology Indian Institute of Technology Guwahati Guwahati Assam India
| | - Vivek K. Srivastava
- Reliance Research and Development Centre, Reliance Corporate Park (RCP) Reliance Industries Ltd. Navi Mumbai Maharashtra India
| | - Raksh Vir Jasra
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara Gujarat India
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Han X, Chen T, Zhao Y, Gao J, Sang Y, Xiong H, Chen Z. Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2990. [PMID: 34835754 PMCID: PMC8619168 DOI: 10.3390/nano11112990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/22/2021] [Accepted: 11/03/2021] [Indexed: 11/29/2022]
Abstract
The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites. In this work, the effects of graphene on the microstructure, mechanical, electrical, and thermal properties of the obtained graphene/polyethylene (PE) composites were investigated. In order to reveal the structure-performance relationship of graphene/PE composites, especially for the effects of the relative free volume fraction (fr) and interfacial interaction intensity (β), positron annihilation lifetime spectroscopy (PALS) was employed for its quantitative description. The relative free volume fraction fr gives a good explanation of the variation for surface resistivity, melting temperature, and thermal stability, and the variation of tensile strength and thermal conductivity agree well with the results of interfacial interaction intensity β. The results showed that fr and β have a significant effect on the properties of the obtained graphene/PE composites, and the effect on the properties was revealed.
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Affiliation(s)
| | | | | | - Jie Gao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (T.C.); (Y.Z.); (Y.S.); (H.X.)
| | | | | | - Zhiyuan Chen
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100, China; (X.H.); (T.C.); (Y.Z.); (Y.S.); (H.X.)
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