Hybrid electrospun nonwovens from chitosan/cellulose acetate

George Salihu; Parikshit Goswami; Stephen Russell

doi:10.1007/s10570-012-9666-8

Hybrid electrospun nonwovens from chitosan/cellulose acetate

George Salihu, Parikshit Goswami, Stephen Russell

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Co-mixtures of chitosan (CS) and cellulose acetate (CA) were electrospun into fibrous webs from a binary co-solvent containing 70:30 trifluoroacetic acid (TFA): methylene chloride (DCM). Fibrous webs were produced from CS/CA in ratios (wt%) of 20:80, 40:60, 50:50 and 60:40. As determined by SEM analysis, 12% polymer solutions of CS/CA 60:40 produced structures with uniform bead free fibre morphologies with an average fibre diameter of 458 nm. FTIR-spectroscopy confirmed the presence of CS in the as-spun fibres in the form of chitosan-amine trifluoroacetate salts (NH ₃ ⁺CF ₃COO ^-). Uniform mixing of the CS and CA components was confirmed by DSC analyses. Alkaline neutralisation of the chitosan amine salts was explored as a means of increasing wet stability. The as-spun fibres were found to be relatively unstable in aqueous medium due to the solubility of the chitosan amine salts. Alkaline post-neutralisation was evaluated as means of minimising weight loss and maximising retention of fibrous structure.

Original language	English
Pages (from-to)	739-749
Number of pages	11
Journal	Cellulose
Volume	19
Issue number	3
Early online date	16 Feb 2012
DOIs	https://doi.org/10.1007/s10570-012-9666-8
Publication status	Published - Jun 2012
Externally published	Yes

Access to Document

10.1007/s10570-012-9666-8Licence: Unspecified

Cite this

@article{2bf0de2b68df441c8545be14ce015671,

title = "Hybrid electrospun nonwovens from chitosan/cellulose acetate",

abstract = "Co-mixtures of chitosan (CS) and cellulose acetate (CA) were electrospun into fibrous webs from a binary co-solvent containing 70:30 trifluoroacetic acid (TFA): methylene chloride (DCM). Fibrous webs were produced from CS/CA in ratios (wt%) of 20:80, 40:60, 50:50 and 60:40. As determined by SEM analysis, 12% polymer solutions of CS/CA 60:40 produced structures with uniform bead free fibre morphologies with an average fibre diameter of 458 nm. FTIR-spectroscopy confirmed the presence of CS in the as-spun fibres in the form of chitosan-amine trifluoroacetate salts (NH 3 +CF 3COO -). Uniform mixing of the CS and CA components was confirmed by DSC analyses. Alkaline neutralisation of the chitosan amine salts was explored as a means of increasing wet stability. The as-spun fibres were found to be relatively unstable in aqueous medium due to the solubility of the chitosan amine salts. Alkaline post-neutralisation was evaluated as means of minimising weight loss and maximising retention of fibrous structure.",

keywords = "Biopolymers, Cellulose acetate, Chitosan, Electrospinning, Hybrid fibres, Nonwovens",

author = "George Salihu and Parikshit Goswami and Stephen Russell",

year = "2012",

month = jun,

doi = "10.1007/s10570-012-9666-8",

language = "English",

volume = "19",

pages = "739--749",

journal = "Cellulose",

issn = "0969-0239",

publisher = "Springer Netherlands",

number = "3",

}

TY - JOUR

T1 - Hybrid electrospun nonwovens from chitosan/cellulose acetate

AU - Salihu, George

AU - Goswami, Parikshit

AU - Russell, Stephen

PY - 2012/6

Y1 - 2012/6

N2 - Co-mixtures of chitosan (CS) and cellulose acetate (CA) were electrospun into fibrous webs from a binary co-solvent containing 70:30 trifluoroacetic acid (TFA): methylene chloride (DCM). Fibrous webs were produced from CS/CA in ratios (wt%) of 20:80, 40:60, 50:50 and 60:40. As determined by SEM analysis, 12% polymer solutions of CS/CA 60:40 produced structures with uniform bead free fibre morphologies with an average fibre diameter of 458 nm. FTIR-spectroscopy confirmed the presence of CS in the as-spun fibres in the form of chitosan-amine trifluoroacetate salts (NH 3 +CF 3COO -). Uniform mixing of the CS and CA components was confirmed by DSC analyses. Alkaline neutralisation of the chitosan amine salts was explored as a means of increasing wet stability. The as-spun fibres were found to be relatively unstable in aqueous medium due to the solubility of the chitosan amine salts. Alkaline post-neutralisation was evaluated as means of minimising weight loss and maximising retention of fibrous structure.

AB - Co-mixtures of chitosan (CS) and cellulose acetate (CA) were electrospun into fibrous webs from a binary co-solvent containing 70:30 trifluoroacetic acid (TFA): methylene chloride (DCM). Fibrous webs were produced from CS/CA in ratios (wt%) of 20:80, 40:60, 50:50 and 60:40. As determined by SEM analysis, 12% polymer solutions of CS/CA 60:40 produced structures with uniform bead free fibre morphologies with an average fibre diameter of 458 nm. FTIR-spectroscopy confirmed the presence of CS in the as-spun fibres in the form of chitosan-amine trifluoroacetate salts (NH 3 +CF 3COO -). Uniform mixing of the CS and CA components was confirmed by DSC analyses. Alkaline neutralisation of the chitosan amine salts was explored as a means of increasing wet stability. The as-spun fibres were found to be relatively unstable in aqueous medium due to the solubility of the chitosan amine salts. Alkaline post-neutralisation was evaluated as means of minimising weight loss and maximising retention of fibrous structure.

KW - Biopolymers

KW - Cellulose acetate

KW - Chitosan

KW - Electrospinning

KW - Hybrid fibres

KW - Nonwovens

UR - http://www.scopus.com/inward/record.url?scp=84860366701&partnerID=8YFLogxK

U2 - 10.1007/s10570-012-9666-8

DO - 10.1007/s10570-012-9666-8

M3 - Article

AN - SCOPUS:84860366701

VL - 19

SP - 739

EP - 749

JO - Cellulose

JF - Cellulose

SN - 0969-0239

IS - 3

ER -

Hybrid electrospun nonwovens from chitosan/cellulose acetate

Abstract

Access to Document

Other files and links

Fingerprint

Cite this