Preparation and properties of TPU micro/nanofibers by a laser melt-electrospinning system

Li, Xiuyan; Wang, Zhe; Wang, Jiaona; Liu, Jianli; Li, Congju

doi:10.1002/pen.23691

Cited by 21 publications

(10 citation statements)

References 26 publications

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“…Another 10 vinyl polymers, acted as the independent samples, were taken from the literatures. 4,7,8 Table 1 summarizes the T g values and the indices of related four descriptors (R OM ; n; and q À ) for the 68 test samples. Here, R OM is the rigidness descriptor, which resulted by hydrogen-bonding moieties group and/or rings, n is the chain mobility, is the molecular average polarizability and q À is the net charge of the most negative atom.…”

Section: Dataset and Modeling Methodsmentioning

confidence: 99%

Modeling and Predicting the Glass Transition Temperature of Vinyl Polymers by Using Hybrid Pso-SVR Method

Pei

Cai

Zhu

2013

J. Theor. Comput. Chem.

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Based on four physicochemical descriptors (the rigidness descriptor R OM resulted by hydrogenbonding moieties group and/or rings, the chain mobility n, the molecular average polarizability and the net charge of the most negative atom q À Þ derived from the polymers' monomers structure, the support vector regression (SVR) approach combined with particle swarm optimization (PSO), is proposed to construct a model for prediction of the glass transition temperature T g of three classes of vinyl polymers, including polystyrenes, polyacrylates and polymethacrylates. The mean absolute error (MAE ¼ 13:68 K), mean absolute percentage error (MAPE ¼ 4:22%) and correlation coe±cient (R 2 ¼ 0:9252) calculated by SVR are superior to those (MAE ¼ 16:74 K; MAPE ¼ 5:30% and R 2 ¼ 0:9059) achieved by S-SAR model, and (MAE ¼ 16:83 K; MAPE ¼ 5:27% and R 2 ¼ 0:9057) achieved by ANN model for the identical training set (124 vinyl polymers), whereas the MAE ¼ 15:09 K; MAPE ¼ 4:82% and R 2 ¼ 0:9253 calculated by SVR are also better than those of MAE ¼ 17:96 K; MAPE ¼ 5:94% and R 2 ¼ 0:8952 achieved by S-SAR, and MAE ¼ 16:603 K, MAPE ¼ 5:4% and R 2 ¼ 0:9120 achieved by ANN for the same 68 test samples. Furthermore, the MAE, MAPE and R 2 for an independent set (10 vinyl polymers) predicted by SVR also reached 14.132 K, 4.25% and 0.9475, respectively. The results strongly support that the comprehensive modeling and prediction ability of SVR model surpass those of S-SAR and ANN models by applying identical training, test and independent samples. It is demonstrated that the established SVR model is more suitable to be used for prediction of the T g values for unknown vinyl polymers possessing similar structure than S-SAR model or ANN model.

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Section: Dataset and Modeling Methodsmentioning

confidence: 99%

Modeling and Predicting the Glass Transition Temperature of Vinyl Polymers by Using Hybrid Pso-SVR Method

Pei

Cai

Zhu

2013

J. Theor. Comput. Chem.

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“…In another study done on TPU microfibers fabricated through laser melt electrospinning [64] as a potential matrix for tissue engineering scaffolds, the TPU microfibers membranes recorded 134% elongation at breakage, which is attributed to the high elasticity of this polymer.…”

Section: Mechanical Analysismentioning

confidence: 97%

Elastic Nanofibrous Membranes for Medical and Personal Protection Applications: Manufacturing, Anti-COVID-19, and Anti-Colistin Resistant Bacteria Evaluation

et al. 2021

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Herein, in the present work two series of thermoplastic polyurethane (TPU) nanofibers were manufactured using the electrospinning techniques with ZnO and CuO nanoparticles for a potential use as an elastic functional layer in antimicrobial applications. Percentages of 0%, 2 wt%, and 4 wt% of the nanoparticles were used. The morphological characterization of the electrospun TPU and TPU/NPs composites nanofibers were observed by using scanning electron microscopy to show the average fiber diameter and it was in the range of 90–150 nm with a significant impact of the nanoparticle type. Mechanical characterization showed that TPU nanofiber membranes exhibit excellent mechanical properties with ultra-high elastic properties. Elongation at break reached up to 92.5%. The assessment of the developed nanofiber membranes for medical and personal protection applications was done against various colistin resistant bacterial strains and the results showed an increment activity by increasing the metal oxide concentration up to 83% reduction rate by using TPU/ZnO 4% nanofibers against K. pneumoniae strain 10. The bacterial growth was completely eradicated after 8 and 16 h incubation with TPU/ZnO and TPU/CuO nanofibers, respectively. The nanofibers SEM study reveals the adsorption of the bacterial cells on the metal oxides nanofibers surface which led to cell lysis and releasing of their content. Finally, in vitro study against Spike S-protein from SARS-CoV-2 was also evaluated to investigate the potent effectiveness of the proposed nanofibers in the virus deactivation. The results showed that the metal oxide concentration is an effective factor in the antiviral activity due to the observed pattern of increasing the antibacterial and antiviral activity by increasing the metal oxide concentration; however, TPU/ZnO nanofibers showed a potent antiviral activity in relation to TPU/CuO.

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“…The same group continued working on the spot laser melt electrospinning process to spin different polymers: rod polymer—poly(ethylene-co-vinyl alcohol), poly(ethylene terephthalate), and polyalirate by Ogata et al [56,57]; coated rod polymer—poly( l -lactide) with poly(ethylene- co -vinyl alcohol) by Tian et al [58]; as well as fiber bundle—poly(lactide)/poly(ethylene- co -vinyl alcohol) by Shimada et al [59]. Following the footsteps of this group, further studies have been reported by another group led by Xiuyan Li [60,61,62,63,64] using the same spot laser design.…”

Section: Melt Electrospinningmentioning

confidence: 99%

Melt Electrospinning Designs for Nanofiber Fabrication for Different Applications

Ibrahim

Hussein

Zagho

et al. 2019

IJMS

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Nanofibers have been attracting growing attention owing to their outstanding physicochemical and structural properties as well as diverse and intriguing applications. Electrospinning has been known as a simple, flexible, and multipurpose technique for the fabrication of submicro scale fibers. Throughout the last two decades, numerous investigations have focused on the employment of electrospinning techniques to improve the characteristics of fabricated fibers. This review highlights the state of the art of melt electrospinning and clarifies the major categories based on multitemperature control, gas assist, laser melt, coaxial, and needleless designs. In addition, we represent the effect of melt electrospinning process parameters on the properties of produced fibers. Finally, this review summarizes the challenges and obstacles connected to the melt electrospinning technique.

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Preparation and properties of TPU micro/nanofibers by a laser melt-electrospinning system

Cited by 21 publications

References 26 publications

Modeling and Predicting the Glass Transition Temperature of Vinyl Polymers by Using Hybrid Pso-SVR Method

Modeling and Predicting the Glass Transition Temperature of Vinyl Polymers by Using Hybrid Pso-SVR Method

Elastic Nanofibrous Membranes for Medical and Personal Protection Applications: Manufacturing, Anti-COVID-19, and Anti-Colistin Resistant Bacteria Evaluation

Melt Electrospinning Designs for Nanofiber Fabrication for Different Applications

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