Simultaneous enhancement of toughness, strength and superhydrophilicity of solvent-free microcrystalline cellulose fluids/poly(lactic acid) fibers fabricated via electrospinning approach

Yin, Xianze; Li, Yun; Weng, Puxin; Qiao, Yu; Han, Lu; Xu, Jing; Zhou, Yinshan; Tan, Yiqiu; Wang, Luoxin; Wang, Hua

doi:10.1016/j.compscitech.2018.08.003

Cited by 31 publications

(8 citation statements)

References 29 publications

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Section: Introductionmentioning

confidence: 99%

“…In this regard, cellulose and its derivatives are considered optimal materials for modifying biopolymers since they are bio-based, biodegradable, biocompatible, stiff, lightweight, non-abrasive to the processing equipment, highly abundant in nature and low in cost [ 27 , 28 ]. In fact, cellulose is the most abundant renewable polymeric resource available on earth and native cellulose is one of the strongest and stiffest natural fibers available, with a theoretical modulus estimated at 167.5 GPa [ 28 ]. Microcrystalline cellulose (MCC), obtained from high quality wood pulp by acid hydrolysis to remove the amorphous regions, is commercially available and its dimensions are in the range of 10 to 50 µm with a high specific surface area compared to other conventional cellulose fibers [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, cellulose is the most abundant renewable polymeric resource available on earth and native cellulose is one of the strongest and stiffest natural fibers available, with a theoretical modulus estimated at 167.5 GPa [ 28 ]. Microcrystalline cellulose (MCC), obtained from high quality wood pulp by acid hydrolysis to remove the amorphous regions, is commercially available and its dimensions are in the range of 10 to 50 µm with a high specific surface area compared to other conventional cellulose fibers [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Electrospinning of PCL-Based Blends: Processing Optimization for Their Scalable Production

et al. 2020

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In this work poly(ε-caprolactone) (PCL) based electrospun mats were prepared by blending PCL with microcrystalline cellulose (MCC) and poly(3-hydroxybutyrate) (PHB). The electrospinning processing parameters were firstly optimized with the aim to obtain scalable PCL-based electrospun mats to be used in the industrial sector. Neat PCL as well as PCL-MCC and PCL-PHB based mats in different proportions (99:1; 95:5; 90:10) were prepared. A complete morphological, thermal and mechanical characterization of the developed materials was carried out. Scanning electron microscopy (SEM) observations showed that the addition of PHB to the PCL matrix considerably reduced the formation of beads. Both the addition of MCC and PHB reduced the thermal stability of PCL, but obtained materials with enough thermal stability for the intended use. The electrospun PCL fibers show greatly reduced flexibility with respect to the PCL bulk material, however when PCL is blended with PHB their stretchability is increased, changing their elongation at break from 35% to 70% when 10 wt% of PHB is blended with PCL. However, the mechanical response of the different blends increases with respect to the neat electrospun PCL, offering the possibility to modulate their properties according to the required industrial applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrospinning of PCL-Based Blends: Processing Optimization for Their Scalable Production

et al. 2020

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“…As shown in Figure , with increasing CNTs content, the distribution of the fiber diameter widens (Figure a–d), corresponding to the range of 1.04 ± 0.07 to 0.72 ± 0.01 μm (Figure S5), which was probably ascribed to the agglomeration of CNTs resulting in the instability of PLA/CNTs spinning solution that further forms the roughness surface. Interestingly, as shown in Figure d, many interconnected nanopores and microspores were formed on the surface of the PLA/CNTs10 fibers, which attributed to the rapid evaporation of the solvent under high CNTs loading . In contrast, the addition of SiO 2 nfs hardly influenced the PLA fiber morphology.…”

Section: Resultsmentioning

confidence: 99%

Mechanically Robust Janus Poly(lactic acid) Hybrid Fibrous Membranes toward Highly Efficient Switchable Separation of Surfactant-Stabilized Oil/Water Emulsions

Qin¹,

Shen²,

Han

et al. 2020

ACS Appl. Mater. Interfaces

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107

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An ideal oil/water separation membrane should possess the characteristics of high flux and separation efficiency, recyclability, as well as good mechanical stability. Herein, a facile method is applied to fabricate a Janus polylactic acid (PLA) fibrous membrane for efficiently separating surfactant-stabilized oil/water mixtures. The Janus PLA fibrous membrane architecture was prepared by electrospinning a PLA/carbon nanotubes (CNTs) fibrous membrane and the subsequent electrospinning of a PLA/SiO2 nanofluids (nfs) membrane onto one side of the PLA/CNTs fibrous membrane. Due to the strong electrostatic interaction between SiO2 nfs and CNTs, synchronous enhancement and plasticization of PLA fibrous membranes were achieved, which was far superior to that reported in the literature. The introduction of CNTs had caused an upshift of the hydrophobicity of the PLA/CNTs fibrous membrane (water contact angle (WCA) > 140°). In contrast, SiO2 nfs bearing long-chain organic anions and cations located onto the surface of the fibers during electrospinning to achieve superhydrophilicity (WCA ≈ 0°). Benefiting from completely opposite wettability on both sides of the Janus membrane, the obtained asymmetric Janus membranes exhibited a high flux (1142–1485 L m–2 L–1) and excellent oil/water separation efficiency (>99%), which were superior to those reported for other Janus membranes. Furthermore, the Janus membranes showed desirable flux recovery without any treatment (>80% for water-in-oil emulsions and >90% for oil-in-water emulsions, respectively, after 11 cycles), showcasing promising applications for water treatment in the future.

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“…15 The electrospinning of CNF with PLA is not only a promising approach to extend CNF as a type of bio-based material with potential applications in industry, which can take the place of other inorganic fillers to prepare environment-friendly polymer composites, but it is also a good way to control the poor hydrophilicity and mechanical properties of PLA. 16,17 The reported studies mainly focus on the degradation and bio-applications of this type of composite as antibacterial materials or scaffolds. Therefore, the combination of CNF extracted from AV with PLA as a new generation of biomass-based nanocomposites, is not merely a significant practice to protect the environment, but also will improve the performance and optimize the application of PLA, which is a major event in the biomedical field.…”

mentioning

confidence: 99%

Comparison of morphological, structural and antibacterial properties of different Apocynum venetum poly (lactic acid)/nanocellulose nanofiber films

Wang

Wang²,

Zhang³

et al. 2019

Textile Research Journal

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As new bio-based sustainable materials, this paper made a comparative study on the phloem and straw of Apocynum venetum. The cellulose nanofibers (CNFs) of Apocynum venetum phloem and straw were prepared by the acid hydrolysis method, and then different parts and proportions of poly (lactic acid) (PLA)/CNF films were prepared via electrospinning, respectively. The results revealed the CNF with longer length and finer diameter network structure can be separated by straw, while the short nanostructure of the rod-like structure can be separated by phloem. It was also shown that the wettability and permeability of PLA improved significantly by adding these two kinds of CNFs, the water contact angle of PLA decreased from 130° to 101° and the permeability was up to 4658 g/(m2•d). As for antibacterial properties, the antibacterial rate of CNF from straw proved slightly better than that from phloem against E.coli, reaching more than 90%. It proved that the CNF from straw showed excellent performance as phloem, providing a novel material for the preparation of CNFs, which can be naturally antibacterial and environment-friendly. The obtained PLA/CNF films could be potentially applied in antibacterial medical dressings.

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Simultaneous enhancement of toughness, strength and superhydrophilicity of solvent-free microcrystalline cellulose fluids/poly(lactic acid) fibers fabricated via electrospinning approach

Cited by 31 publications

References 29 publications

Electrospinning of PCL-Based Blends: Processing Optimization for Their Scalable Production

Electrospinning of PCL-Based Blends: Processing Optimization for Their Scalable Production

Mechanically Robust Janus Poly(lactic acid) Hybrid Fibrous Membranes toward Highly Efficient Switchable Separation of Surfactant-Stabilized Oil/Water Emulsions

Comparison of morphological, structural and antibacterial properties of different Apocynum venetum poly (lactic acid)/nanocellulose nanofiber films

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