Electrospun Nanofibers with Associative Polymer−Surfactant Systems

Talwar, Sachin; Krishnan, A.; Hinestroza, Juan P.; Pourdeyhimi, Behnam; Khan, Saad A.

doi:10.1021/ma1013447

Cited by 56 publications

(44 citation statements)

References 38 publications

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“…As shown in Table 1, the surface tension and conductivity of SA sharply decreased after the amidation, which could compensate for the increase in alginate concentration and afford the production of higher alginate content fibers. Meanwhile, 2.0 wt% AAD aqueous solution was above its critical aggregation concentration indicating that micelles' formation contributed also to the fiber formation, which was in good accordance with results reported by Yu et al [44]. As pure AAD solution could not be electrospun, the amidation of SA could not fundamentally alter the spinnability of alginate but appropriately increase the content of alginate in the blend nanofibers.…”

Section: Electrospinning Of Aad/pva Blend Solutionssupporting

confidence: 88%

Synthesis of amphiphilic alginate derivatives and electrospinning blend nanofibers: a novel hydrophobic drug carrier

et al. 2015

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As a kind of novel hydrophobic drug carrier materials, the drug-loaded nanofibers were successfully fabricated using amphiphilic alginate derivative (AAD) and poly (vinyl alcohol) (PVA) by electrospinning method. The AAD was synthesized by amide linkage attachment of octylamine onto the carboxylic group of alginate, which was characterized by the means of elemental analysis, FT-IR spectrometer, 1 H NMR spectrometer and fluorescence measurement. Experimental results showed the amidation of alginate was successful, in which the degree of modification was 0.27 and the critical aggregation concentration in 0.15 mol/L aqueous NaCl solution was 0.43 mg/mL. The octyl groups of AAD could effectively make alginate chains flexible and enhance chain entanglements through the hydrophobic interactions between octyl groups. In contrast to sodium alginate (SA)/ PVA blend solutions, AAD/PVA blend solutions showed more excellent electrospinnability. Additionally, the different volume ratios of SA or AAD to PVA played an important role in the formation and morphology of the electrospun blend nanofibers. Although the amidation of alginate could not fundamentally alter the spinnability of alginate, the content of alginate in the blend nanofibers was appropriately increased. The new generated drug-loaded AAD/PVA (20/80) blend nanofibers exhibited relatively continuous and uniform nanofibers with the average diameter of 191.72 nm. Compared to the drug-loaded SA/PVA (20/80) blend nanofibers, the drug-loaded AAD/PVA (20/80) blend nanofibers presented a sustained release performance with the slow release of about 76 % k-cyhalothrin during the initial period of 10 h.

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Section: Electrospinning Of Aad/pva Blend Solutionssupporting

confidence: 88%

Synthesis of amphiphilic alginate derivatives and electrospinning blend nanofibers: a novel hydrophobic drug carrier

et al. 2015

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“…[28,29] Here we considered the addition of SLS surfactant into the ESN PU solutions to decrease the surface tension and mimic the fascinating structure of soap bubbles. The motivation behind this decision was based on previous work on the fabrication of PAA NFN membranes by our group, [20] in which dodecylbenzene sulfonic acid surfactant was shown to have a profound influence on the structure of PAA NFN membranes.…”

Section: Resultsmentioning

confidence: 99%

One‐step Electro‐spinning/netting Technique for Controllably Preparing Polyurethane Nano‐fiber/net

Wang

Ding

et al. 2011

Macromol. Rapid Commun.

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Electro-spinning/netting (ESN) as a cutting-edge technique evokes much interest because of its ability in the one-step preparation of versatile nano-fiber/net (NFN) membranes. Here, a controllable fabrication of polyurethane (PU) NFN membranes with attractive structures, consisting of common electrospun nanofibers and two-dimensional (2D) soap bubble-like structured nano-nets via an ESN process is reported. The unique nanoscaled NFN architecture can be finely controlled by regulating the solution properties and several ESN process parameters. The versatile PU nano-nets comprising interlinked nanowires with ultrathin diameters (5-40 nm) mean that the NFN structured membranes possess several excellent characteristics, such as an extremely large specific surface area, high porosity and large stacking density, which would be particularly useful for applications in ultrafiltration, special protective clothing, ultrasensitive sensors, catalyst support and so on.

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“…Typically, nanofibers are produced using electrospinning, a process in which a charged fluid jet from a polymer solution or melt undergoes stretching and whipping in the presence of an applied electric field resulting in continuous ultrathin randomly oriented fibers in the form of a non-woven mat deposited on a collector [5][6][7]. These fibers have diameters in the range of 100-500 nm.…”

Section: Introductionmentioning

confidence: 99%