Chitosan modified by poly(ethylene oxide): Film and mixture properties

Budtova, Tatiana; Bel’nikevich, N. G.; Kalyuzhnaya, L. M.; Alexeev, V.L.; Bronnikov, Sergei; Vesnebolotskaya, S. A.; Zoolshoev, Z. F.

doi:10.1002/app.2359

Cited by 23 publications

(15 citation statements)

References 18 publications

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“…Different authors have reported on the blending of CHI with cellulose,11 some cellulose ethers,12 starch,13 collagen,14, 15 poly(ethylene oxide),16 water‐soluble tertiary polyamides,17 poly( N ‐vinyl pyrrolidone),18 poly(vinyl alcohol),19 and polymethacrylamidoglucose 20. It was found that CHI has a limited miscibility with cellulose11 and some cellulose ethers12 but is fully compatible with starch 13…”

Section: Introductionmentioning

confidence: 99%

Mucoadhesive and Elastic Films Based on Blends of Chitosan and Hydroxyethylcellulose

Luo

Yin

Khutoryanskaya

et al. 2008

Macromolecular Bioscience

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Mucoadhesive polymeric films have been prepared based on blends of chitosan and hydroxyethylcellulose. The blends have been characterized by IR spectroscopy, DSC, WAXD, TGA, SEM, and mechanical testing. It is demonstrated that the mechanical properties of chitosan are improved significantly upon blending with hydroxyethylcellulose. An increase in hydroxyethylcellulose content in the blends makes the materials more elastic. The thermal treatment of the blends at 100 degrees C leads to partial cross-linking of the polymers and formation of water-insoluble but swellable materials. The adhesion of the films towards porcine buccal mucosa decreases with increasing hydroxyethylcellulose content in the blends.

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Section: Introductionmentioning

confidence: 99%

Mucoadhesive and Elastic Films Based on Blends of Chitosan and Hydroxyethylcellulose

Luo

Yin

Khutoryanskaya

et al. 2008

Macromolecular Bioscience

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“…Chitosan/PEO films have been reported to exhibit good mechanical properties because of the specific intermolecular interactions between chitosan and PEO in the blends. Budtova et al [4] have shown that the incompatibility of PEO and chitosan is not strong and does not lead to a phase separation. The AC impedance technique was employed to study the conductivity and dielectric properties of chitosan/PEO blends.…”

Section: Introductionmentioning

confidence: 98%

Dielectric spectra of LiTFSI-doped chitosan/PEO blends

Idris

Senin

Arof

2007

Ionics

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Solid-polymer-blend electrolyte consisting of chitosan and polyethylene oxide (PEO) in a 1:1 weight ratio and doped with lithium trifluoromethanesulfonimide (LiTFSI) salt was prepared by solution cast technique. The highest conducting film with conductivity value of 1.40×10 -6 S cm −1 at room temperature consists of 30 wt% LiTFSI. The temperature dependence for the highest conducting film obeyed Arrhenius relationship. From loss tangent-frequency plots at different temperatures, the frequency f max at which the plot is a maximum was obtained. From this, ln f max vs 10 3 /T was plotted. The activation energy value obtained from the log σ vs 10 3 /T plot and ln f max vs 10 3 /T plot is about the same, suggesting that the processes of conductivity and relaxation for the charge carriers are the same.

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“…Chitosan is a biopolymer which has oxygen and nitrogen electron donating atoms. Chitosan/PEO films have been reported to exhibit good mechanical properties [9], and blending PEO with chitosan does not lead to a phase separation [10]. Three semiconductor/solid polymer electrolyte junctions of configuration ZnSe/(PEO + chitosan):NH 4 I (+I 2 ) have been assembled and characterized.…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic activity in a ZnSe/PEO–chitosan blend electrolyte junction

Mohamad

Ali

Yahya

et al. 2007

Ionics

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Thin films of ZnSe and PEO-chitosan blend polymer doped with NH 4 I and iodine crystals were prepared to form the two sides of a semiconductor electrolyte junction. ZnSe was electrodeposited on indium tin oxide (ITO) conducting glass. The polymer is a blend of 50 wt% chitosan and 50 wt% polyethylene oxide. The polymer blend was complexed with ammonium iodide (NH 4 I), and some iodine crystals were added to the polymer-NH 4 I solution to provide the I − /I 3− redox couple. The room temperature ionic conductivity of the polymer electrolyte is 4.32 × 10 −6 S/cm. The polymer film was sandwiched between the ZnSe semiconductor and an ITO glass to form a ZnSe/polymer electrolyte/ITO photovoltaic cell. The open circuit voltage (V oc ) of the fabricated cells ranges between 200 to 400 mV and the short circuit current between 7 to 10 μA.

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Chitosan modified by poly(ethylene oxide): Film and mixture properties

Cited by 23 publications

References 18 publications

Mucoadhesive and Elastic Films Based on Blends of Chitosan and Hydroxyethylcellulose

Mucoadhesive and Elastic Films Based on Blends of Chitosan and Hydroxyethylcellulose

Dielectric spectra of LiTFSI-doped chitosan/PEO blends

Photovoltaic activity in a ZnSe/PEO–chitosan blend electrolyte junction

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