Micropatterned microplastic generation via degradation of polymeric films with micropatterned structures

Micropatterned microplastic generation via degradation of polymeric films with micropatterned structures

Water-insoluble micropatterned films were prepared from poly(vinyl alcohol) (PVA) (or ethylene-vinyl alcohol copolymer (EVOH)) and poly(methacrylic acid) (poly(MAAc)). The carboxy groups in poly(MAAc) underwent dehydration reactions with the hydroxy groups in the vinyl alcohol units during heating a...

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Bibliographic Details
Published in:Polymer journal Vol. 56; no. 7; pp. 677 - 684
Main Authors: Uchida, Haruki, Uchiyama, Wakako, Kurita, Erika, Kirihara, Masayuki, Kotsuchibashi, Yohei
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 01-07-2024
Nature Publishing Group
Subjects:
692/700
704/172/169
Alcohol
Biomaterials
Bioorganic Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Copolymers
Crosslinking
Decomposition
Dehydration
Ethylene
Heating
Micropatterning
Original Article
Polymer films
Polymer Sciences
Polymethacrylic acid
Polyvinyl alcohol
Surfaces and Interfaces
Thin Films
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Description
Summary:Water-insoluble micropatterned films were prepared from poly(vinyl alcohol) (PVA) (or ethylene-vinyl alcohol copolymer (EVOH)) and poly(methacrylic acid) (poly(MAAc)). The carboxy groups in poly(MAAc) underwent dehydration reactions with the hydroxy groups in the vinyl alcohol units during heating at 135 °C, which resulted in crosslinking with ester bonds and formation of a polymeric network in the micropatterned films. The surface structures of the micropatterned films and the shapes of the peeled microplastics in the supernatant were measured after decomposition in an oxidizing environment, after ultrasonic irradiation, and with both. The results revealed that the micropatterns could be peeled off from the films after they were subjected to appropriate decomposition conditions and maintained their patterned shapes. Water-insoluble micropatterned films were prepared from poly(vinyl alcohol) (PVA) (or ethylene-vinyl alcohol copolymer (EVOH)) and poly(methacrylic acid) (poly(MAAc)). The carboxy groups in poly(MAAc) underwent dehydration reactions with the hydroxy groups in the vinyl alcohol units during heating at 135 °C, which resulted in the introduction of a crosslinked structure with ester bonds into the polymeric network of the micropatterned films. The micropatterns could be peeled off from the films after decomposition and maintained their patterned shapes.
ISSN:0032-3896
1349-0540
DOI:10.1038/s41428-024-00897-7