Abstract
AbstractElectron spin resonance (ESR) spectra of styrene/methacrylic acid copolymers neutralized with Cu(II) were observed at room temperature. Three magnetic species were detected; isolated Cu2+, Cu2+‐Cu2+ pairs of Cu(II) acetate monohydrate type and anhydrous Cu(II) formate type. One of the absorption patterns due to the Cu2+‐Cu2+ pair is the same as that of Cu(II) acetate monohydrate except linewidth. ESR data from the other species are summarized. ESR parameter, effect of the acid and Cu(II) contents, and spectral changes depending on sample preparation procedures or temperatures are discussed.
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