Enhancement of the Oil Absorption Capacity of Poly(Lactic Acid) Nano Porous Fibrous Membranes Derived via a Facile Electrospinning Method

Liang, Jun-Wei; Prasad, Gajula; Wang, Shi-Cai; Wu, Jialin; Lu, Sheng‐Guo

doi:10.3390/app9051014

Cited by 35 publications

(19 citation statements)

References 29 publications

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“…As shown in Figure 2 A,C, the diameters of the shell and coaxial electrospun nanofibers are 712 ± 120 and 676 ± 162 nm, respectively. As demonstrated in Figure 2 B,D, “holes” appeared on the surface of electrospun nanofibers due to different rates of solvent evaporation (DMF and DCM) [ 37 , 38 ]. In the coaxial electrospinning system, since the evaporation of the core solvent was lower than that of the shell solvent, the jet generated cracking “branches” in the electric field and the coarser primary nanofibers were split to form fine nanofibers with a smaller diameter.…”

Section: Resultsmentioning

confidence: 99%

Targeting Delivery System for Lactobacillus Plantarum Based on Functionalized Electrospun Nanofibers

Liu

et al. 2020

Polymers

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With the increased interest in information on gut microbes, people are realizing the benefits of probiotics to health, and new technologies to improve the viability of probiotics are still explored. However, most probiotics have poor resistance to adverse environments. In order to improve the viability of lactic acid bacteria, polylactic acid (PLA) nanofibers were prepared by coaxial electrospinning. The electrospinning voltage was 16 kV, and the distance between spinneret and collector was 15 cm. The feed rates of the shell and core solutions were 1.0 and 0.25 mL/h, respectively. The lactic acid bacteria were encapsulated in the coaxial electrospun nanofibers with PLA and fructooligosaccharides (FOS) as the shell materials. Scanning electron microscopy, transmission electron microscopy, and laser scanning confocal microscopy showed that lactic acid bacteria were encapsulated in the coaxial electrospun nanofibers successfully. The water contact angle test indicated that coaxial electrospun nanofiber films had good hydrophobicity. An in vitro simulated digestion test exhibited that the survival rate of lactic acid bacteria encapsulated in coaxial electrospun nanofiber films was more than 72%. This study proved that the viability of probiotics can be improved through encapsulation within coaxial electrospun PLA nanofibers and provided a novel approach for encapsulating bioactive substances.

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Section: Resultsmentioning

confidence: 99%

Targeting Delivery System for Lactobacillus Plantarum Based on Functionalized Electrospun Nanofibers

Liu

et al. 2020

Polymers

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“…It can enhance the adhesion and elasticity of composite materials, therefore, it is broadly used in medical and biomedical applications, i.e., for vascular stent production [4], for drug delivery systems [5], for tissue engineering [6], and as surgical sutures, implants and screws. Moreover, it is used in such fields as water purification by oil adsorption [7,8], food packaging [9] or photocatalysis degradation [10]. Poly(L-lactide) can be physically modified by doping it with fillers like bioceramic: β-TCP [11] or chitosan to facilitate cell adhesion, reduce the amount of degradation products, improve cell proliferation, increase hydrophilicity and improve bending between bones and polymeric implants [12].…”

Section: Introductionmentioning

confidence: 99%

The Comprehensive Approach to Preparation and Investigation of the Eu3+ Doped Hydroxyapatite/poly(L-lactide) Nanocomposites: Promising Materials for Theranostics Application

et al. 2019

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In response to the need for new materials for theranostics application, the structural and spectroscopic properties of composites designed for medical applications, received in the melt mixing process, were evaluated. A composite based on medical grade poly(L-lactide) (PLLA) and calcium hydroxyapatite (HAp) doped with Eu3+ ions was obtained by using a twin screw extruder. Pure calcium Hap, as well as the one doped with Eu3+ ions, was prepared using the precipitation method and then used as a filler. XRPD (X-ray Powder Diffraction) and IR (Infrared) spectroscopy were applied to investigate the structural properties of the obtained materials. DSC (Differential Scanning Calorimetry) was used to assess the Eu3+ ion content on phase transitions in PLLA. The tensile properties were also investigated. The excitation, emission spectra as well as decay time were measured to determine the spectroscopic properties. The simplified Judd–Ofelt (J-O) theory was applied and a detailed analysis in connection with the observed structural and spectroscopic measurements was made and described.

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“…Pores of 3DP membranes are generally larger than those of conventional membranes for a given application. For example, 3DP membranes applied to water-oil separation have pores diameters of 370 µm [39], 200 µm [37], 250 µm [29] and 51.8 µm [34], while those in conventional membranes are generally less than 1 µm [51,53,54]. Pore size in 3DP membranes varies according to the desired structure and depends on the resolution of the used printing technology.…”

Section: Properties and Performancementioning

confidence: 99%

“…Conventional membranes for separation have contact angles of 92.6 • (PVDF) [12] or 21.87 • (PSU) [51]. The 3DP membranes, using the same base materials and the same applications, exhibit higher contact angles at 130 • (PVDF) [53] and 161 • (PSU) [34]. The surface structure can also affect membrane behavior against water.…”

Section: Properties and Performancementioning

confidence: 99%

3D Printed and Conventional Membranes—A Review

et al. 2022

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Polymer membranes are central to the proper operation of several processes used in a wide range of applications. The production of these membranes relies on processes such as phase inversion, stretching, track etching, sintering, or electrospinning. A novel and competitive strategy in membrane production is the use of additive manufacturing that enables the easier manufacture of tailored membranes. To achieve the future development of better membranes, it is necessary to compare this novel production process to that of more conventional techniques, and clarify the advantages and disadvantages. This review article compares a conventional method of manufacturing polymer membranes to additive manufacturing. A review of 3D printed membranes is also done to give researchers a reference guide. Membranes from these two approaches were compared in terms of cost, materials, structures, properties, performance. and environmental impact. Results show that very few membrane materials are used as 3D-printed membranes. Such membranes showed acceptable performance, better structures, and less environmental impact compared with those of conventional membranes.

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Enhancement of the Oil Absorption Capacity of Poly(Lactic Acid) Nano Porous Fibrous Membranes Derived via a Facile Electrospinning Method

Cited by 35 publications

References 29 publications

Targeting Delivery System for Lactobacillus Plantarum Based on Functionalized Electrospun Nanofibers

Targeting Delivery System for Lactobacillus Plantarum Based on Functionalized Electrospun Nanofibers

The Comprehensive Approach to Preparation and Investigation of the Eu3+ Doped Hydroxyapatite/poly(L-lactide) Nanocomposites: Promising Materials for Theranostics Application

3D Printed and Conventional Membranes—A Review

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