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Oxygen barrier property of synthesized polyacrylate coatings containing inter‐chain cross‐linking architecture on PET film
Author(s) -
Zhong Wen,
Yang Xiaobin,
Gao Hongwei,
Bai Yongping
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50836
Subject(s) - materials science , oxygen permeability , differential scanning calorimetry , polymer chemistry , permeation , oxygen , gel permeation chromatography , chemical engineering , polyethylene terephthalate , coating , acrylate , maleic anhydride , methyl methacrylate , polymerization , copolymer , composite material , polymer , chemistry , organic chemistry , membrane , biochemistry , physics , engineering , thermodynamics
A series of coatings which applied for improving the oxygen barrier property of polyethylene terephthalate (PET) film were prepared based on the copolymerization of methyl methacrylate, methyl acrylate, diallyl maleate, and maleic acid (MA). The chemical structures of the coatings were characterized by Fourier Transform Infrared spectrometer. The curing behavior was analyzed by differential scanning calorimetry. The oxygen permeability (Po 2 ) was measured by gas permeability tester. The molecular weight was investigated by gel permeation chromatography (GPC). Po 2 is inversely proportional to the oxygen barrier property that the decrease of Po 2 indicates the improvement of oxygen barrier property. The coating containing inter‐chain cross‐linking structure formed by the dehydration of carboxylic acid improves the oxygen barrier property of PET film greatly. With the increasing content of MA, the oxygen barrier capability of coated PET film is enhanced according to the Po 2 decreasing from 1.450 to 0.8956. The Po 2 of coated PET film is minimized by selecting N ‐methyl pyrrolidone as solvent for polymerization. The GPC results indicate that the oxygen barrier of novel coated PET film can be obtained when the weight average molecular weight ( Mw ) is up to the stipulated value.