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Sun K, Lv F, Zhang W, Liu Y, Fu L, Yang R, Wang S, Fan S, Yu X. Self-Reinforced Doping Strategy in the Multiscale PMIA Paper for High Mechanical Properties and Insulating Performance. ACS APPLIED MATERIALS & INTERFACES 2023; 15:53902-53912. [PMID: 37935440 DOI: 10.1021/acsami.3c11566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
The poly(m-phenylene isophthalamide) (PMIA) paper has attracted extensive interests due to its ultrahigh mechanical properties as an ideal protective material for anti-impact damage applications. In the pursuit of additional properties, composites based on the PMIA matrix and various fillers are widely explored. However, additional improvements are frequently obtained at the expense of mechanical properties because of the serious interfacial compatibility brought by different components. In this study, a self-reinforced doping strategy is proposed by combining microscale PMIA fibers as the fillers and nanoscale PMIA fibers as the matrix to form a micronano paper. Without the limitation of the interfacial compatibility issues, the nanofibers are tightly aligned and adhered to the microfibers, enabling the in situ generation of hydrogen bonds at the interfaces. A compact interfacial structure is thus constructed with reduced porosity on the surface. It indicates that the microfibers have a positive impact on the improvement of mechanical properties. In our optimized sample with 5 wt % microfibers, the elastic modulus, tensile strength, and elongation are 1530 MPa, 24.8 MPa, and 5.3%, respectively, which are 142, 49.4, and 65% higher than those of the pristine nano-PMIA paper. In addition, the insulating performance is also improved, facilitating its further application extended to broad fields.
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Affiliation(s)
- Kaixuan Sun
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
| | - Fangcheng Lv
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
- Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071066, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Wenqi Zhang
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
| | - Yunpeng Liu
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
- Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071066, China
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
| | - Lvqian Fu
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
| | - Rui Yang
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
| | - Shenghui Wang
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
| | - Sidi Fan
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
- Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071066, China
| | - Xiang Yu
- School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
- Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071066, China
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Kolitha BS, Jayasekara SK, Tannenbaum R, Jasiuk IM, Jayakody LN. Repurposing of waste PET by microbial biotransformation to functionalized materials for additive manufacturing. J Ind Microbiol Biotechnol 2023; 50:kuad010. [PMID: 37248049 PMCID: PMC10549213 DOI: 10.1093/jimb/kuad010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 05/20/2023] [Indexed: 05/31/2023]
Abstract
Plastic waste is an outstanding environmental thread. Poly(ethylene terephthalate) (PET) is one of the most abundantly produced single-use plastics worldwide, but its recycling rates are low. In parallel, additive manufacturing is a rapidly evolving technology with wide-ranging applications. Thus, there is a need for a broad spectrum of polymers to meet the demands of this growing industry and address post-use waste materials. This perspective article highlights the potential of designing microbial cell factories to upcycle PET into functionalized chemical building blocks for additive manufacturing. We present the leveraging of PET hydrolyzing enzymes and rewiring the bacterial C2 and aromatic catabolic pathways to obtain high-value chemicals and polymers. Since PET mechanical recycling back to original materials is cost-prohibitive, the biochemical technology is a viable alternative to upcycle PET into novel 3D printing materials, such as replacements for acrylonitrile butadiene styrene. The presented hybrid chemo-bio approaches potentially enable the manufacturing of environmentally friendly degradable or higher-value high-performance polymers and composites and their reuse for a circular economy. ONE-SENTENCE SUMMARY Biotransformation of waste PET to high-value platform chemicals for additive manufacturing.
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Affiliation(s)
- Bhagya S Kolitha
- School of Biological Science, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
| | - Sandhya K Jayasekara
- School of Biological Science, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
| | - Rina Tannenbaum
- Department of Materials Science and Chemical Engineering, the Stony Brook University Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Iwona M Jasiuk
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Lahiru N Jayakody
- School of Biological Science, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
- Fermentation Science Institute, Southern Illinois University Carbondale, Carbondale, IL 62901, USA
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Li YF, Li JY, Syu JY, Yang TH, Chang SM, Shen MY. Mechanical Behaviors of Microwave-Assisted Pyrolysis Recycled Carbon Fiber-Reinforced Concrete with Early-Strength Cement. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1507. [PMID: 36837136 PMCID: PMC9962862 DOI: 10.3390/ma16041507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
This study aimed to investigate the mechanical performance of early-strength carbon fiber-reinforced concrete (ECFRC) by incorporating original carbon fiber (OCF), recycled carbon fiber (RCF), and sizing-removed carbon fiber (SCF). Compressive, flexural, and splitting tensile strength were tested under three fiber-to-cement weight ratios (5‱, 10‱, and 15‱). The RCF was produced from waste bicycle parts made of carbon fiber-reinforced polymer (CFRP) through microwave-assisted pyrolysis (MAP). The sizing-removed fiber was obtained through a heat-treatment method applied to the OCF. The results of scanning electron microscopy (SEM) analysis with energy dispersive X-ray spectrometry (EDS) indicated the successful removal of sizing and impurities from the surface of the RCF and SCF. The mechanical test results showed that ECFRC with a 10‱ fiber-to-cement weight ratio of carbon fiber had the greatest improvement in its mechanical strengths. Moreover, the ECFRC with 10‱ RCF exhibited higher compressive, flexural, and splitting tensile strength than that of benchmark specimen by 14.2%, 56.5%, and 22.5%, respectively. The ECFRC specimens with a 10‱ fiber-to-cement weight ratio were used to analyze their impact resistance under various impact energies in the impact test. At 50 joules of impact energy, the impact number of the ECFRC with SCF was over 23 times that of the benchmark specimen (early-strength concrete without fiber) and was also greater than that of ECFRC with OCF and RCF.
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Affiliation(s)
- Yeou-Fong Li
- Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan
| | - Jie-You Li
- Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan
| | - Jin-Yuan Syu
- Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan
| | - Tzu-Hsien Yang
- Department of Materials Science and Engineering, National Taiwan University, 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
| | - Shu-Mei Chang
- Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Ming-Yuan Shen
- Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
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Zhu Z, Ma B, Zeng Z, Gong C, Mei Z, Hu J, Zhang P. An Experimental Study of the Mechanical Properties of Partially Rehabilitated Cable Tunnels. MATERIALS 2022; 15:ma15144830. [PMID: 35888296 PMCID: PMC9321473 DOI: 10.3390/ma15144830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 02/05/2023]
Abstract
For buried municipal tunnels—such as cable tunnels and utility tunnels with structural defects—due to the sheltering of the internal pipelines, shelves, and other auxiliary facilities, traditional trenchless rehabilitating methods are not applicable since an intact ring is needed for spraying and lining. In these tunnels, only the exposed area at the crown of the ring can be partly rehabilitated. In this paper, three-edge bearing tests (TEBTs) for partially rehabilitated reinforced concrete (RC) pipe sections are carried out to simulate the case of a municipal tunnel and the effects of different repair materials (cement mortar and epoxy resin) and different dimensional parameters of the liner (lining thickness, lining range) on the partial rehabilitation effect of defective RC pipes are studied. The deforming compatibility of the liner–pipe interface is discussed, and the flexural rigidity of the partially rehabilitated section is calculated. The results show that the load-carrying capacities of partial rehabilitated RC pipes are effectively improved.
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Affiliation(s)
- Zihao Zhu
- Faculty of Engineering, China University of Geoscience-Wuhan, Wuhan 430074, China; (Z.Z.); (Z.Z.); (C.G.); (Z.M.); (J.H.)
| | - Baosong Ma
- School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China;
| | - Zheng Zeng
- Faculty of Engineering, China University of Geoscience-Wuhan, Wuhan 430074, China; (Z.Z.); (Z.Z.); (C.G.); (Z.M.); (J.H.)
| | - Chenkun Gong
- Faculty of Engineering, China University of Geoscience-Wuhan, Wuhan 430074, China; (Z.Z.); (Z.Z.); (C.G.); (Z.M.); (J.H.)
| | - Zhe Mei
- Faculty of Engineering, China University of Geoscience-Wuhan, Wuhan 430074, China; (Z.Z.); (Z.Z.); (C.G.); (Z.M.); (J.H.)
| | - Jinqiu Hu
- Faculty of Engineering, China University of Geoscience-Wuhan, Wuhan 430074, China; (Z.Z.); (Z.Z.); (C.G.); (Z.M.); (J.H.)
| | - Peng Zhang
- Faculty of Engineering, China University of Geoscience-Wuhan, Wuhan 430074, China; (Z.Z.); (Z.Z.); (C.G.); (Z.M.); (J.H.)
- Correspondence:
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Quantitative and Qualitative Aspects of Composite Action of Concrete and Dispersion-Reinforcing Fiber. Polymers (Basel) 2022; 14:polym14040682. [PMID: 35215594 PMCID: PMC8876351 DOI: 10.3390/polym14040682] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 01/30/2022] [Accepted: 02/09/2022] [Indexed: 11/17/2022] Open
Abstract
The interest in using polymer-dispersed reinforcement in the construction industry in the context of sustainability has led to significant research on this scientific problem. The article is devoted to studying the processes of fiber interaction depending on its dispersion and the concrete matrix, and their combined contact work during the formation of a concrete structure, work under stresses arising in a concrete body, and during a collapse. The physical and mechanical processes of deformation and destruction of the “matrix–fiber” system were studied using high-precision microscopic equipment, and the nature of the work and deformation of fibers in concrete were revealed. The work aimed to establish and characterize the quantitative and qualitative aspects of the concrete matrix and dispersion-reinforcing fiber combined work. It was established that the best values of the adhesion index were observed at a volume content of fiber in the amount of 2% by weight of cement, regardless of the type of dispersion-reinforcing fiber. It was shown that the microstructure of polydispersion-reinforced fiber-cement specimens was denser, and microcracks formed during fracture in polydispersion-reinforced specimens had a smaller opening width. It was established that polydispersion-reinforced concrete had higher values of strength (up to 126%) and deformation (up to 296%) characteristics compared to monodispersion fiber-reinforced concrete.
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