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Wu W, Han W, Sun Y, Yi H, Wang X. Experimental Study of the Airflow Field and Fiber Motion in the Melt-Blowing Process. Polymers (Basel) 2024; 16:469. [PMID: 38399847 PMCID: PMC10892176 DOI: 10.3390/polym16040469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/12/2023] [Accepted: 10/17/2023] [Indexed: 02/25/2024] Open
Abstract
The melt-blowing process involves high velocity airflow and fiber motion, which have a significant effect on fiber attenuation. In this paper, the three-dimensional airflow field for a melt-blowing slot die was measured using the hot-wire anemometry in an experiment. The fiber motion was captured online using a high-speed camera. The characteristics of the airflow distribution and fiber motion were analyzed. The results show that the melt-blowing airflow field is asymmetrically distributed. The centerline air velocity is higher than that around it and decays quickly. The maximum airflow velocity exists near the die face, in the range of 130-160 m/s. In the region of -0.3 cm < y < 0.3 cm and 0 < z < 2 cm, the airflow has a high velocity (>100 m/s). As the distance of z reaches 5 cm and 7 cm, the maximum airflow velocity reduces to 70 m/s. The amplitude of fibers is calculated, and it increases with the increase in air dispersion area which has a significant influence on fiber attenuation. At z = 1.5 cm, 2.5 cm, 4 cm, and 5.5 cm, the average fiber amplitudes are 1.05 mm, 1.71 mm, 2.83 mm, and 3.97 mm, respectively. In the vicinity of the die, the fibers move vertically downward as straight segments. With the increase in distance from the spinneret, the fiber appears to bend significantly and forms a fiber loop. The fiber loop morphology affects the velocity of the fiber movement, causing crossover, folding, and bonding of the moving fiber. The study investigated the interaction between the fiber and airflow fields. It indicates that the airflow velocity, velocity difference, and dispersion area can affect the motion of fiber which plays an important role in fiber attenuation during the melt-blowing process.
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Affiliation(s)
- Wenhan Wu
- College of Material and Textile, Jiaxing University, Jiaxing 314000, China; (W.W.); (H.Y.)
| | - Wanli Han
- College of Material and Textile, Jiaxing University, Jiaxing 314000, China; (W.W.); (H.Y.)
| | - Yafeng Sun
- Jiaxing COETEKS Material Co., Ltd., Jiaxing 314000, China;
| | - Honglei Yi
- College of Material and Textile, Jiaxing University, Jiaxing 314000, China; (W.W.); (H.Y.)
| | - Xinhou Wang
- College of Mechanical Engineering, Donghua University, Shanghai 201620, China;
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2
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Zhang H, Zhen Q, Liu ZY, Cui JQ, Qian XM. Facile fabrication of polylactic acid/polyethylene glycol micro-nano fabrics with aligned fibrous roughness for enhancing liquid anisotropic wetting performance via double-stage drafting melt blowing process. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li H, Zhang H, Hu JJ, Wang GF, Cui JQ, Zhang YF, Zhen Q. Facile Preparation of Hydrophobic PLA/PBE Micro-Nanofiber Fabrics via the Melt-Blown Process for High-Efficacy Oil/Water Separation. Polymers (Basel) 2022; 14:polym14091667. [PMID: 35566835 PMCID: PMC9104379 DOI: 10.3390/polym14091667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/14/2022] [Accepted: 04/18/2022] [Indexed: 02/04/2023] Open
Abstract
Polylactic acid (PLA) micro-nanofiber fabrics with a large specific surface area and excellent biodegradability are commonly used in oil/water separation; however, challenges remain due to their poor mechanical properties. Herein, a thermoplastic polylactic acid/propylene-based elastomer (PLA/PBE) polymer was prepared by blending PLA with PBE. Then, PLA/PBE micro-nanofiber fabrics were successfully prepared using a melt-blown process. The results show that the PLA/PBE micro-nanofiber fabric has a three-dimensional porous structure, improving the thermal stability and fluidity of the PLA/PBE blended polymers. The PLA/PBE micro-nanofiber fabric demonstrated a significantly reduced average fiber diameter and an enhanced breaking strength. Moreover, the water contact angle of the prepared samples is 134°, which suggests a hydrophobic capacity. The oil absorption rate of the fabric can reach 10.34, demonstrating excellent oil/water separation performance. The successful preparation of PLA/PBE micro-nanofiber fabrics using our new method paves the way for the large-scale production of promising candidates for high-efficacy oil/water separation applications.
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Affiliation(s)
- Han Li
- School of Textile, Zhongyuan University of Technology, Zhengzhou 451191, China; (H.L.); (Y.-F.Z.)
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Xinxiang 453400, China; (G.-F.W.); (J.-Q.C.); (Q.Z.)
| | - Heng Zhang
- School of Textile, Zhongyuan University of Technology, Zhengzhou 451191, China; (H.L.); (Y.-F.Z.)
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Xinxiang 453400, China; (G.-F.W.); (J.-Q.C.); (Q.Z.)
- Correspondence: ; Tel.: +86-156-3902-5712
| | - Jun-Jie Hu
- Shanghai Earntz Nonwoven Co., Ltd., No. 88, Jiangong Road, Jinshan District, Shanghai 201501, China;
| | - Guo-Feng Wang
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Xinxiang 453400, China; (G.-F.W.); (J.-Q.C.); (Q.Z.)
- Henan Tuoren Medical Device Co., Ltd., Tuoren Industrial Zone, No. 1 Yangze Road, Xinxiang 453400, China
| | - Jing-Qiang Cui
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Xinxiang 453400, China; (G.-F.W.); (J.-Q.C.); (Q.Z.)
- Henan Tuoren Medical Device Co., Ltd., Tuoren Industrial Zone, No. 1 Yangze Road, Xinxiang 453400, China
| | - Yi-Feng Zhang
- School of Textile, Zhongyuan University of Technology, Zhengzhou 451191, China; (H.L.); (Y.-F.Z.)
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Xinxiang 453400, China; (G.-F.W.); (J.-Q.C.); (Q.Z.)
| | - Qi Zhen
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Xinxiang 453400, China; (G.-F.W.); (J.-Q.C.); (Q.Z.)
- School of Clothing, Zhongyuan University of Technology, No. 1 Huaihe Road, Zhengzhou 451191, China
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Zhen Q, Zhang H, Sun H, Zhang Y. Tailoring the softness performance of polyethylene/polypropylene micro‐nanofibrous fabrics for skin contacts. J Appl Polym Sci 2022. [DOI: 10.1002/app.51530] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Qi Zhen
- School of Clothing Zhongyuan University of Technology Zhengzhou China
- School of Textiles Zhongyuan University of Technology Zhengzhou China
- Institute of Advanced Medical Polymers Henan Key Laboratory Medical Polymer Materials Technology and Application Xinxiang China
| | - Heng Zhang
- School of Textiles Zhongyuan University of Technology Zhengzhou China
- Institute of Advanced Medical Polymers Henan Key Laboratory Medical Polymer Materials Technology and Application Xinxiang China
| | - Huan‐Wei Sun
- School of Textiles Zhongyuan University of Technology Zhengzhou China
- Institute of Advanced Medical Polymers Henan Key Laboratory Medical Polymer Materials Technology and Application Xinxiang China
| | - Yi‐Feng Zhang
- School of Textiles Zhongyuan University of Technology Zhengzhou China
- Institute of Advanced Medical Polymers Henan Key Laboratory Medical Polymer Materials Technology and Application Xinxiang China
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Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil-Water Separation Processes. NANOMATERIALS 2021; 12:nano12010087. [PMID: 35010035 PMCID: PMC8746374 DOI: 10.3390/nano12010087] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/19/2021] [Accepted: 12/23/2021] [Indexed: 01/13/2023]
Abstract
The vast demand for petroleum industry products led to the increased production of oily wastewaters and has led to many possible separation technologies. In addition to production-related oily wastewater, direct oil spills are associated with detrimental effects on the local ecosystems. Accordingly, this review paper aims to tackle the oil spill cleanup issue as well as water separation by providing a wide range of graphene-based technologies. These include graphene-based membranes; graphene sponges; graphene-decorated meshes; graphene hydrogels; graphene aerogels; graphene foam; and graphene-coated cotton. Sponges and aerogels modified by graphene and reduced graphene oxide demonstrated effective oil water separation owing to their superhydrophobic/superoleophilic properties. In addition, oil particles are intercepted while allowing water molecules to penetrate the graphene-oxide-coated metal meshes and membranes thanks to their superhydrophilic/underwater superoleophobic properties. Finally, we offer future perspectives on oil water separation that are hindering the advancements of such technologies and their large-scale applications.
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Bednarek WH, Paukszta D, Szostak M, Szymańska J. Fundamental studies on shear-induced nucleation and beta-phase formation in the isotactic polypropylene—effect of the temperature. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02652-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractThe complex and incompletely understood phenomenon of shear-induced crystallization of polymers may be nowadays analysed via the in situ POM-shear stage methodology. In this research, the two main issues were investigated with the use of the Linkam CCS450 shear stage connected with POM microscope. It was found that the secondary nucleation in the tree well-known temperature regimes plays the greater role in the overall crystallization kinetics than the shear induced primary nucleation. Furthermore, it was found that the tendency towards β-phase formation in shear conditions is dependent on the temperature value during shear treatment. It may be concluded that the temperature is the key parameter in the primary and secondary nucleation process and beta-phase formation in the iPP melts.
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Alassod A, Tina H, Islam SR, Huang W, Xu G. Using polypropylene needle punch nonwoven sorbents as the interceptor for oil in static and dynamic water experiments. ENVIRONMENTAL TECHNOLOGY 2021; 43:1-16. [PMID: 34278944 DOI: 10.1080/09593330.2021.1937332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 03/14/2021] [Indexed: 06/13/2023]
Abstract
This work was to determine the impact of pore size and thickness of sorbents besides the influence of oil properties on the performance of sorbents used as an interceptor barrier for oils in Static and dynamic water experiments. polypropylene needle punch sorbents were used. SEM test showed the porous structure of sorbents. Oil sorption test investigated that with sorbents had same thickness N1 absorbed oil 8.89 g/g of soybean oil and 7.15 g/g of motor oil. Meanwhile, sorbents with the same pore size, N6 absorbed oil 6.11 g/g of soybean oil and 5.13 g/g of motor oil. All sorbents showed a retention rate of over 75% after 24 h of dripping. Dynamic oil spreading revealed that smaller pore size and higher thickness exhibited higher height wicking. The static performance experiment showed motor oil and soybean oil started to leak at 38 and 32 min for N1, then prolonged with reducing pore size with intercepting efficiency around 70% after 600 min for motor oil and 540 min for soybean oil. In comparison, The motor oil and soybean oil started to leak at 49 and 40 min for N4 and then prolonged with increased thickness with intercepting efficiency around 70% after 480 min for motor oil and 360 min for soybean oil. Under the dynamic experiment, oils spilled quicker with initial leakage of sorbents N3 and N6 at rate flow 55.65 ml/s for motor oil and soybean oil were (41 min, 36 min) and (50 min, 41 min) while intercepting efficiency was (99%, 98.40%) and (99.33%, 98.40%).
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Affiliation(s)
- Abeer Alassod
- Textile Industries Mechanical Engineering and Techniques Department, Faculty of Mechanical and Electrical Engineering, Damascus University, Damascus, Syria
- College of Textiles, Donghua University, Shanghai, People's Republic of China
| | - Huseein Tina
- Textile Industries Mechanical Engineering and Techniques Department, Faculty of Mechanical and Electrical Engineering, Damascus University, Damascus, Syria
| | - Syed Rashedul Islam
- College of Textiles, Donghua University, Shanghai, People's Republic of China
| | - Wanzhen Huang
- College of Textiles, Donghua University, Shanghai, People's Republic of China
| | - Guangbiao Xu
- College of Textiles, Donghua University, Shanghai, People's Republic of China
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Akanbi MJ, Jayasinghe SN, Wojcik A. Characterisation of electrospun PS/PU polymer blend fibre mat for oil sorption. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Liu W, Yang G, Huang M, Liang J, Zeng B, Fu C, Wu H. Ultrarobust and Biomimetic Hierarchically Macroporous Ceramic Membrane for Oil-Water Separation Templated by Emulsion-Assisted Self-Assembly Method. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35555-35562. [PMID: 32610892 DOI: 10.1021/acsami.0c05294] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Reported herein is a novel ultrarobust and biomimetic hierarchically macroporous ceramic membrane that can achieve a high efficiency of up to 99.98% for oil-water separation, while the efficiency remains nearly unchanged even after 10 rounds of use and storage for up to 4 months. The macroporous ceramic membrane is prepared by combining surface hydrophobic coating with an emulsion-assisted template self-assembly of the modified Al2O3 ceramic powder. The as-prepared ceramic membrane is a lightweight material with high strength because the relative density is only ∼1.02 g/cm3; the compressive strength of the as-prepared ceramic membrane is expected to be 15-fold higher than that of the sample prepared using the traditional solid template approach even at a higher porosity due to the principle of self-assembly of Al2O3 particles. It is the mechanism of self-assembly that has broken the traditional principle in ceramic preparation that leads to a perfectly dense packing structure. Moreover, the ceramic membrane maintained excellent oil-water separation efficiency, because of which even after its top layer was damaged by sand impingement, superfine particles could be separated using our macroporous membrane due to the featured interconnected pore structure. We anticipate that this example of the combination of a superwettability theory and a traditional ceramic material can provide an important application direction of advanced oil-water separation techniques.
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Affiliation(s)
- Wei Liu
- School of Mechatronic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510635, China
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Gao Yang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Meipeng Huang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Jianwei Liang
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Baobao Zeng
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Chong Fu
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Haidong Wu
- School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
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