Electrospun composite poly(lactic acid)/polyaniline nanofibers from low concentrations in CHCl3: Making a biocompatible polyester electro-active

Serrano, W. A. Pacheco; Meléndez, Anamaris; Ramos, Idalia; Pinto, Nicholas J.

doi:10.1016/j.polymer.2014.09.015

Cited by 21 publications

(24 citation statements)

References 24 publications

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“…Electrospinning fibers of pure P3HT is not easy due to its low molecular weight; however, since both P3HT and PLA are soluble in chloroform (CHCl 3 ), we have successfully used the electrospinning technique to fabricate thin fibers of the composite material. The goal is to extend the usage of PLA by making it electroactive with the integration of the regio‐regular p‐doped P3HT and hence permitting the construction of electronic devices at the lowest PLA concentration where the emergence of fibers begins. Blending these two polymers to fabricate composite nanofibers at low polymer (PLA) concentrations in a common solvent has not been reported before.…”

Section: Introductionmentioning

confidence: 99%

Poly(lactic acid)/poly(3‐hexylthiophene) composite nanofiber fabrication for electronic applications

Serrano

Meléndez

Ramos

et al. 2016

Polymer International

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Fibers of the biopolymer poly(lactic acid) (PLA) and the p-type semiconducting polymer poly(3-hexylthiophene) (P3HT) were fabricated using the electrospinning technique at low PLA concentration (5 wt%) in CHCl 3 . The fibers were several millimeters long and had diameters in the range 100 nm-4 m. Nanofibers containing 63%/37% of PLA/P3HT were electroactive, and therefore were used to construct p-n diodes whose ideality parameter was 2.4 and rectification (on/off) ratio was 400 at ±1 V. These diodes were also able to sense UV radiation and remain operable with an increase in the on/off ratio and a lowering of the turn-on voltage. By fabricating reusable and low-cost multifunctional diodes from PLA/P3HT, the applications of PLA as a biocompatible and biodegradable polyester are expanded to include electronic device fabrication with low environmental impact.

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Section: Introductionmentioning

confidence: 99%

Poly(lactic acid)/poly(3‐hexylthiophene) composite nanofiber fabrication for electronic applications

Serrano

Meléndez

Ramos

et al. 2016

Polymer International

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“…Electrospinning is a simple technique to implement in order to produce polymer fibers with diameters ranging from the micro-to the nanoscale [23e25]. The technique has emerged as a useful technique to produce micro-and nano-fibers that have found wide applications in fields such as tissue engineering [26], biomedical [27], filtration [28], or electronic [29]. Despite the simplicity of the technique, many factors influence the fiber morphology including the solution flow rate, the distance between the syringe and the collector, solution concentration and the spinning voltage among others.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics in electrospun amorphous plasticized polylactide fibers

Monnier

Delpouve

Basson

et al. 2015

Polymer

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. The molecular dynamics in the amorphous phase of electrospun fibers of polylactide (PLA) has been investigated using the cooperative rearranging region concept. An unusual and significant increase of the cooperativity length at the glass transition induced by the electrospinning has been observed. This behavior is attributed to the singularity of the amorphous phase organization. Electrospun PLA fibers rearrange in a pre-ordered metastable state which is characterized by highly oriented but non-crystalline polymer chains, and the presence of highly cohesive mesophase which plays the role of an anchoring point in the amorphous phase. The successful processing of electrospun fibers of plasticized polylactide is also demonstrated. It is shown that the plasticizer remains in the polymer matrix of the nanofiber after electrospinning. When PLA is plasticized, the loosening of the macromolecules prevails over the preferential orientation of the chains; therefore no mesophase is formed during the electrospinning and the cooperativity length remains the same. When the content of plasticizer increases, the inter-chain characteristic distances estimated from wide angle X-ray scattering (WAXS) are redistributed, suggesting a change in the level of interactions between macromolecules. It is assumed that the resulting decrease of the cooperativity length is driven by the progressive reduction of the number of inter-chain weak bonds. It is shown that in a non-confined environment, the number of structural entities involved in the alpha relaxation is strongly dependent on the level of physical interactions in the amorphous phase.

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“…Changing the solvent also leads to increased fiber hydrophilicity as well as improved thermal resistance [32]. A polylactic acid (PLA) and PANI mixture with low polylactic acid content (about 1%) demonstrated solubility in chloroform and was electrospun to give nanofibers with diameters in the range of 10 nm -300 nm [33].…”

Section: Introductionmentioning

confidence: 99%

Associated Polymers, Solvents and Doping Agents to Make Polyaniline Electrospinnable

Bertea

Manea

Hristian

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Polyaniline (PANI) is a conductive polymer that has both metal (electrical, electronic, optical and magnetic properties) and polymer characteristics (low density, low-cost and resistance to chemicals). Polyaniline becomes a conductor by treatment with a dopant that acts by extracting electrons (oxidation) or by inserting electrons (reduction). The reduced solubility of PANI in all common solvents restricts its capacity to be electrospun into uniform fibers. The present paper reviews the methods to increase the solubility of PANI by blending it with other polymers and doping it with organic acids, highlighting the best polymer/solvent couples and doping agents.

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Electrospun composite poly(lactic acid)/polyaniline nanofibers from low concentrations in CHCl3: Making a biocompatible polyester electro-active

Cited by 21 publications

References 24 publications

Poly(lactic acid)/poly(3‐hexylthiophene) composite nanofiber fabrication for electronic applications

Poly(lactic acid)/poly(3‐hexylthiophene) composite nanofiber fabrication for electronic applications

Molecular dynamics in electrospun amorphous plasticized polylactide fibers

Associated Polymers, Solvents and Doping Agents to Make Polyaniline Electrospinnable

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