N-Halamine modified thermoplastic polyurethane with rechargeable antimicrobial function for food contact surface
A polymer blend of two N -halamine precursors was prepared and homogeneously incorporated into TPU structure via a solvent casting method, and an N -halamine modified TPU film with rechargeable antimicrobial activity resulted after treating with chlorine bleach. Antimicrobial efficacies were evaluat...
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Published in | RSC advances Vol. 7; no. 3; pp. 1233 - 1240 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
01.01.2017
|
Subjects | |
Online Access | Get full text |
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Summary: | A polymer blend of two
N
-halamine precursors was prepared and homogeneously incorporated into TPU structure
via
a solvent casting method, and an
N
-halamine modified TPU film with rechargeable antimicrobial activity resulted after treating with chlorine bleach. Antimicrobial efficacies were evaluated against both
Staphylococcus aureus
(
S. aureus
) and
Escherichia coli
O157:H7 (
E. coli
). Results showed that the
N
-halamine modified TPU film caused 6 log CFU reduction of bacteria reduction within 2 hours of contact. Moreover, the
N
-halamine modified TPU displayed desirable rechargeability and stability, which maintained sufficient antimicrobial activity after 20 cycles of “discharge–recharge” process and over 4 weeks of storage. Besides, the tensile strength and surface tension of TPU were not adversely affected by
N
-halamine modification. The
N
-halamine modified TPU with rechargeable antimicrobial function exhibited great potential as a cheap, safe and effective food contact surface material for preventing food microbial cross-contamination. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/c6ra25502g |