Electrospun nanofibers of block copolymer of trimethylene carbonate and ϵ‐caprolactone

Jia, Yongtang; Kim, Hee Young; Gong, Jian; Lee, Duck-Rae

doi:10.1002/app.22633

Cited by 24 publications

(21 citation statements)

References 14 publications

(12 reference statements)

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“…[72] Contrary to blends, block copolymers with physically immiscible segments undergo limited phase separation: typically, microphase separation into domains with sizes of less than 100 nm occurs. [312] Electrospun fibers with controlled hydrophobicity were fabricated using PS-bpolydimethylsiloxane [313] and PS-b-PP [314] block copolymers. However, it is very difficult to characterize the nanofiber morphologies precisely.…”

Section: Melt-electrospun Polymersmentioning

confidence: 99%

Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers

2007

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Electrospinning is a highly versatile method to process solutions or melts, mainly of polymers, into continuous fibers with diameters ranging from a few micrometers to a few nanometers. This technique is applicable to virtually every soluble or fusible polymer. The polymers can be chemically modified and can also be tailored with additives ranging from simple carbon-black particles to complex species such as enzymes, viruses, and bacteria. Electrospinning appears to be straightforward, but is a rather intricate process that depends on a multitude of molecular, process, and technical parameters. The method provides access to entirely new materials, which may have complex chemical structures. Electrospinning is not only a focus of intense academic investigation; the technique is already being applied in many technological areas.

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Section: Melt-electrospun Polymersmentioning

confidence: 99%

Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers

2007

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“…Solvent systems other than 80% EtOH/water may have attributes that may be attractive to chemists for derivatization of zein. It has been shown that the morphology of spun fibers can change with solvent 18. This paper reports our efforts in determining how changes in solvent effect the electrospinning and the resulting morphology of zein.…”

Section: Introductionmentioning

confidence: 99%

Impact of Solvent on Electrospinning of Zein and Analysis of Resulting Fibers

Selling

Biswas

Patel

et al. 2007

Macro Chemistry & Physics

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Zein fibers have been produced by electrospinning from acetic acid, aqueous methanol, ethanol and isopropyl alcohol. Alcohol solutions produced fibers that were predominantly ribbons. Fibers spun from acetic acid solution have a round morphology with a narrower distribution of diameters when spun under suitable conditions. The IR spectra of electrospun fibers display increased absorbance at 1 650 cm−1 relative to starting material, indicative of increased α‐helical structure. Raman spectra of fibers spun from acetic acid solution had spectral differences, having increased absorbance at 680, 750 and 860 cm−1, versus fibers spun from alcoholic solvents suggesting different tertiary structure within the fiber, which may result from different structures in solution. Polarized Raman spectroscopy taken parallel and perpendicular to the fiber axis displayed no differences, suggesting similar secondary and tertiary structures in these directions. All of the fibers had some degree of birefringence demonstrating the presence of orientation. The smaller fibers were highly birefringent throughout the fiber, while the larger fibers had orientation at the surface only. Quality fibers could not be produced from N,N‐dimethylformamide, acetone/water, acetic acid/water, 8 M urea/water or 10% NaOH/water zein solutions.magnified image

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“…The voltage is another effective factor to electrospun fibers. The average diameter of the electrospun TMC‐ε‐CL BCPs fibers was decreased with increasing voltage in Figure e–h . Figure i–l shows the SEM photographs of the fibers created.…”

Section: Characterizationmentioning

confidence: 94%

“…The poly(TMC‐ co ‐LLA) as an elastomeric scaffold was electrospun using an apparatus via a syringe pump, a high‐voltage power supply, and a grounded collection surface composed of aluminum foil . The BCP of TMC and ε‐caprolactone dissolved in DMF and methylene chloride (MC) was electrospun and the results indicated that there is a relationship between the diameter of the electrospun fibers and the molar ratio of MC to DMF . The solutions of PCL/PTMC blends containing 1 and 5 wt% shikonin were electrospun and used as drug‐carrying materials .…”

Section: Synthesismentioning

confidence: 99%

“…Figure a–d shows the SEM images of the BCP fibers of TMC and ε‐caprolactone dissolved in DMF at various solvent molar ratios of MC/DMF from 90/10 to 60/40 ratio . The diameter of the electrospun fibers was decreasing with the increase in content of DMF, and the average diameter was changing from 1500 to 200 nm with reduction in the molar ratio of MC/DMF . The voltage is another effective factor to electrospun fibers.…”

Section: Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Nanocomposites of Polymeric Biomaterials Containing Carbonate Groups: An Overview

Taraghi

Paszkiewicz

Grȩbowicz

et al. 2017

Macro Materials & Eng

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The modification of biomaterials using nanoadditives can lead to the development of novel materials for a wide variety of biomedical applications such as drug administration systems, tissue engineering, bioresistance coatings, and biomedical instruments. Moreover, a further improvement of mechanical and thermal properties of aforementioned biomaterials while maintaining their dimensional stability is a goal of major scientific researches. Aliphatic polycarbonates (APCs) containing carbonate groups such as poly(trimethylene carbonate), poly(propylene carbonate), poly(ethylene carbonate), poly(dimethyl trimethylene carbonate), etc., have become much more interesting compared to other biodegradable materials due to their unique physical and chemical properties. This review presents the effect of applying different kinds of nanoparticles (NPs) on the mechanical, thermal, and viscoelastic properties as well as dimensional stability and biocompatibility of APCs. The dispersion process of nanofillers within polymer matrices has been divided into two groups, solution and melt mixing techniques. Moreover, synthesis procedures of APC loaded NPs for drug delivery systems and electrospinning of nanofiber mats have also been reviewed. In order to clarify the effect of NPs on the overall characteristics of the APC biomaterials, the detailed mechanism of improving process have been extensively discussed.

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Electrospun nanofibers of block copolymer of trimethylene carbonate and ϵ‐caprolactone

Cited by 24 publications

References 14 publications

Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers

Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers

Impact of Solvent on Electrospinning of Zein and Analysis of Resulting Fibers

Nanocomposites of Polymeric Biomaterials Containing Carbonate Groups: An Overview

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