Antimicrobial active bioplastics using triangular silver nanoplate integrated polycaprolactone and polylactic acid films

Eduardo Lanzagorta Garcia; Olivia A. Attallah; Marija Mojicevic; Declan M. Devine; Margaret Brennan Fournet

doi:10.3390/ma14051132

Antimicrobial active bioplastics using triangular silver nanoplate integrated polycaprolactone and polylactic acid films

Eduardo Lanzagorta Garcia, Olivia A. Attallah, Marija Mojicevic, Declan M. Devine, Margaret Brennan Fournet

Limerick Institute of Technology,

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

7 Citations (Scopus)

Abstract

An innovative antimicrobial technology for plastic surfaces is presented. We report the synthesis and scale-up of triangular silver nanoplates (TSNPs) and their integration into polycapro-lactone (PCL) and polylactic acid (PLA) polymers through a solvent-casting technique. The TSNPs have a high geometric aspect ratio and strong local surface plasmon resonance (LSPR) response, which provides an effective tool for monitoring their integrity during processing and integration with the biodegradable plastics. An aqueous-based seed-mediated chemical method was used to synthesize the TSNPs, and characterisation was carried out using TEM and UV (Ultraviolet)-VIS (Visible) spectroscopy to measure LSPR profiles. The UV-VIS spectra of silver seeds and TSNPs exhibited characteristic peaks at 395 and 600 nm respectively. Synthesized TSNPs were coated with thiol-terminated polyethylene glycol (SH-PEG) and transferred into chloroform in order to effect compatibility with PCL and PLA. TSNP/PCL and TSNP/PLA composite films were prepared by solvent casting. The morphological structure, thermal, mechanical, and antimicrobial properties of the TSNP-incorporated composite films were evaluated. Results showed the TSNP-treated films had a rougher surface than the bare films. Insignificant changes in the thermal properties of TSNP-treated films compared to bare ones were also observed, which indicated the thermal stability of the composite films. The tensile strength and antimicrobial properties of the composite films were increased after TSNP incorporation. TSNP/PCL and TSNP/PLA films exhibited improved antimi-crobial activity against Escherichia coli and Staphylococcus aureus with antimicrobial effect (AE) val-ues ranging between 0.10 and 0.35. The obtained results and demonstrated TSNP production scala-bility validate the TSNP treated PCL and PLA films as a composite material with desirable antimi-crobial effect for wide-ranging surface applications.

Original language	English
Article number	1132
Pages (from-to)	1-15
Number of pages	15
Journal	Materials
Volume	14
Issue number	5
DOIs	https://doi.org/10.3390/ma14051132
Publication status	Published - 1 Mar 2021

Keywords

Antibacterial
Composite films
Polycaprolactone
Polylactic acid
Triangular silver nanoplates

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10.3390/ma14051132

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title = "Antimicrobial active bioplastics using triangular silver nanoplate integrated polycaprolactone and polylactic acid films",

abstract = "An innovative antimicrobial technology for plastic surfaces is presented. We report the synthesis and scale-up of triangular silver nanoplates (TSNPs) and their integration into polycapro-lactone (PCL) and polylactic acid (PLA) polymers through a solvent-casting technique. The TSNPs have a high geometric aspect ratio and strong local surface plasmon resonance (LSPR) response, which provides an effective tool for monitoring their integrity during processing and integration with the biodegradable plastics. An aqueous-based seed-mediated chemical method was used to synthesize the TSNPs, and characterisation was carried out using TEM and UV (Ultraviolet)-VIS (Visible) spectroscopy to measure LSPR profiles. The UV-VIS spectra of silver seeds and TSNPs exhibited characteristic peaks at 395 and 600 nm respectively. Synthesized TSNPs were coated with thiol-terminated polyethylene glycol (SH-PEG) and transferred into chloroform in order to effect compatibility with PCL and PLA. TSNP/PCL and TSNP/PLA composite films were prepared by solvent casting. The morphological structure, thermal, mechanical, and antimicrobial properties of the TSNP-incorporated composite films were evaluated. Results showed the TSNP-treated films had a rougher surface than the bare films. Insignificant changes in the thermal properties of TSNP-treated films compared to bare ones were also observed, which indicated the thermal stability of the composite films. The tensile strength and antimicrobial properties of the composite films were increased after TSNP incorporation. TSNP/PCL and TSNP/PLA films exhibited improved antimi-crobial activity against Escherichia coli and Staphylococcus aureus with antimicrobial effect (AE) val-ues ranging between 0.10 and 0.35. The obtained results and demonstrated TSNP production scala-bility validate the TSNP treated PCL and PLA films as a composite material with desirable antimi-crobial effect for wide-ranging surface applications.",

keywords = "Antibacterial, Composite films, Polycaprolactone, Polylactic acid, Triangular silver nanoplates",

author = "Garcia, {Eduardo Lanzagorta} and Attallah, {Olivia A.} and Marija Mojicevic and Devine, {Declan M.} and Fournet, {Margaret Brennan}",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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doi = "10.3390/ma14051132",

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T1 - Antimicrobial active bioplastics using triangular silver nanoplate integrated polycaprolactone and polylactic acid films

AU - Garcia, Eduardo Lanzagorta

AU - Attallah, Olivia A.

AU - Mojicevic, Marija

AU - Devine, Declan M.

AU - Fournet, Margaret Brennan

PY - 2021/3/1

Y1 - 2021/3/1

N2 - An innovative antimicrobial technology for plastic surfaces is presented. We report the synthesis and scale-up of triangular silver nanoplates (TSNPs) and their integration into polycapro-lactone (PCL) and polylactic acid (PLA) polymers through a solvent-casting technique. The TSNPs have a high geometric aspect ratio and strong local surface plasmon resonance (LSPR) response, which provides an effective tool for monitoring their integrity during processing and integration with the biodegradable plastics. An aqueous-based seed-mediated chemical method was used to synthesize the TSNPs, and characterisation was carried out using TEM and UV (Ultraviolet)-VIS (Visible) spectroscopy to measure LSPR profiles. The UV-VIS spectra of silver seeds and TSNPs exhibited characteristic peaks at 395 and 600 nm respectively. Synthesized TSNPs were coated with thiol-terminated polyethylene glycol (SH-PEG) and transferred into chloroform in order to effect compatibility with PCL and PLA. TSNP/PCL and TSNP/PLA composite films were prepared by solvent casting. The morphological structure, thermal, mechanical, and antimicrobial properties of the TSNP-incorporated composite films were evaluated. Results showed the TSNP-treated films had a rougher surface than the bare films. Insignificant changes in the thermal properties of TSNP-treated films compared to bare ones were also observed, which indicated the thermal stability of the composite films. The tensile strength and antimicrobial properties of the composite films were increased after TSNP incorporation. TSNP/PCL and TSNP/PLA films exhibited improved antimi-crobial activity against Escherichia coli and Staphylococcus aureus with antimicrobial effect (AE) val-ues ranging between 0.10 and 0.35. The obtained results and demonstrated TSNP production scala-bility validate the TSNP treated PCL and PLA films as a composite material with desirable antimi-crobial effect for wide-ranging surface applications.

AB - An innovative antimicrobial technology for plastic surfaces is presented. We report the synthesis and scale-up of triangular silver nanoplates (TSNPs) and their integration into polycapro-lactone (PCL) and polylactic acid (PLA) polymers through a solvent-casting technique. The TSNPs have a high geometric aspect ratio and strong local surface plasmon resonance (LSPR) response, which provides an effective tool for monitoring their integrity during processing and integration with the biodegradable plastics. An aqueous-based seed-mediated chemical method was used to synthesize the TSNPs, and characterisation was carried out using TEM and UV (Ultraviolet)-VIS (Visible) spectroscopy to measure LSPR profiles. The UV-VIS spectra of silver seeds and TSNPs exhibited characteristic peaks at 395 and 600 nm respectively. Synthesized TSNPs were coated with thiol-terminated polyethylene glycol (SH-PEG) and transferred into chloroform in order to effect compatibility with PCL and PLA. TSNP/PCL and TSNP/PLA composite films were prepared by solvent casting. The morphological structure, thermal, mechanical, and antimicrobial properties of the TSNP-incorporated composite films were evaluated. Results showed the TSNP-treated films had a rougher surface than the bare films. Insignificant changes in the thermal properties of TSNP-treated films compared to bare ones were also observed, which indicated the thermal stability of the composite films. The tensile strength and antimicrobial properties of the composite films were increased after TSNP incorporation. TSNP/PCL and TSNP/PLA films exhibited improved antimi-crobial activity against Escherichia coli and Staphylococcus aureus with antimicrobial effect (AE) val-ues ranging between 0.10 and 0.35. The obtained results and demonstrated TSNP production scala-bility validate the TSNP treated PCL and PLA films as a composite material with desirable antimi-crobial effect for wide-ranging surface applications.

KW - Antibacterial

KW - Composite films

KW - Polycaprolactone

KW - Polylactic acid

KW - Triangular silver nanoplates

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DO - 10.3390/ma14051132

M3 - Article

AN - SCOPUS:85102248390

SN - 1996-1944

VL - 14

SP - 1

EP - 15

JO - Materials

JF - Materials

IS - 5

M1 - 1132

ER -

Antimicrobial active bioplastics using triangular silver nanoplate integrated polycaprolactone and polylactic acid films

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