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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Morphological, mechanical and mucoadhesive properties of electrospun chitosan/phospholipid hybrid nanofibers
AU - Mendes, A.C.
AU - Moreno, J.S.
AU - Hanif, M.
AU - Douglas, Timothy E. L.
AU - Chen, M.
AU - Chronakis, I.S.
PY - 2018/8/2
Y1 - 2018/8/2
N2 - This study aimed to develop hybrid electrospun chitosan–phospholipid nanofibers and investigate the effect of phospholipid (P) content and chitosans (Ch) molecular weights (Mw) and degree of acetylation (DA), on the morphological, mechanical and mucoadhesive properties of the nanofibers. Electrospun Ch/P nanofibers exhibited a smooth and uniform surface with average diameters ranging from 300 to 1000 nm, as observed by scanning electron microscopy (SEM). The average diameter of the nanofibers was observed to increase with the increase of the Mw and degree of deacetylation of Ch, and phospholipid content. The elastic and adhesive properties of the nanofibers were determined by atomic force microscopy, and displayed higher values for higher Mw and lower DA Ch used. The elastic modulus of electrospun Ch/P hybrid fibers determined for the different conditions tested was found to be in the range of 500 and 1400 MPa. Furthermore, electrospun Ch/P nanofibers displayed mucoadhesive properties expressed by the work of adhesion calculated after the compression of the nanofibers against a section of pig small intestine. Our results showed that the increase in phospholipid content and DA of Ch decrease the work of adhesion, while the increase of Mw resulted in slightly higher work of adhesion of the nanofibers. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
AB - This study aimed to develop hybrid electrospun chitosan–phospholipid nanofibers and investigate the effect of phospholipid (P) content and chitosans (Ch) molecular weights (Mw) and degree of acetylation (DA), on the morphological, mechanical and mucoadhesive properties of the nanofibers. Electrospun Ch/P nanofibers exhibited a smooth and uniform surface with average diameters ranging from 300 to 1000 nm, as observed by scanning electron microscopy (SEM). The average diameter of the nanofibers was observed to increase with the increase of the Mw and degree of deacetylation of Ch, and phospholipid content. The elastic and adhesive properties of the nanofibers were determined by atomic force microscopy, and displayed higher values for higher Mw and lower DA Ch used. The elastic modulus of electrospun Ch/P hybrid fibers determined for the different conditions tested was found to be in the range of 500 and 1400 MPa. Furthermore, electrospun Ch/P nanofibers displayed mucoadhesive properties expressed by the work of adhesion calculated after the compression of the nanofibers against a section of pig small intestine. Our results showed that the increase in phospholipid content and DA of Ch decrease the work of adhesion, while the increase of Mw resulted in slightly higher work of adhesion of the nanofibers. © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
KW - Chitosan
KW - Elastic modulus
KW - Electrospun fibers
KW - Mucoadhesion
KW - Phospholipids
KW - chitosan
KW - nanofiber
KW - phospholipid
KW - adhesive agent
KW - acetylation
KW - Article
KW - atomic force microscopy
KW - controlled study
KW - deacetylation
KW - electrospinning
KW - molecular weight
KW - mucoadhesion
KW - particle size
KW - photon correlation spectroscopy
KW - pig
KW - scanning electron microscopy
KW - small intestine
KW - surface property
KW - Young modulus
KW - zeta potential
KW - animal
KW - chemistry
KW - intestine mucosa
KW - materials testing
KW - metabolism
KW - ultrastructure
KW - Adhesives
KW - Animals
KW - Elastic Modulus
KW - Intestinal Mucosa
KW - Intestine, Small
KW - Materials Testing
KW - Nanofibers
KW - Swine
U2 - 10.3390/ijms19082266
DO - 10.3390/ijms19082266
M3 - Journal article
VL - 19
JO - International Journal of Molecular Sciences
JF - International Journal of Molecular Sciences
SN - 1661-6596
IS - 8
M1 - 2266
ER -