Property-structure relationships in partially sulphonated poly(ethylene terephthalate)—I. Infrared studies
Property-structure relationships in partially sulphonated poly(ethylene terephthalate)—I. Infrared studies
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DOI：
10.1016/0014-3057(94)90017-5
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发表时间：
1994-08
影响因子：
6
通讯作者：
B. Ostrowska-Gumkowska;J. Ostrowska-Czubenko
中科院分区：
文献类型：
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作者：
B. Ostrowska-Gumkowska;J. Ostrowska-Czubenko
用红外光谱法研究了含1.9mol.%~10.1mol.%SO3H或SO3K基团的轻磺化聚对苯二甲酸乙二酯S。详细分析了共聚酯芳香核上的磺酸或磺酸钾基团的特征吸收带。结果表明，在所研究的共聚酯中，磺酸基团通过氢键广泛地结合在一起。联合的过程是复杂的。磺酸基团与聚合物链中存在的其他质子受体和质子给体基团的相互作用叠加了这些基团的自缔合。主要形成二聚体和磺酸基团的大聚集体等缔合结构，以及由SO3H基和C(O)O和CH2CH2OCH2CH2残基组成的氢键络合物。
Lightly sulphonated poly(ethylene terephthalate)s containing 1.9 to 10.1 mol.% of SO3H or SO3K groups were studied with infrared spectroscopy. Characteristic absorption bands of sulphonic acid or potassium sulphonate groups attached to the aromatic nucleus of the copolyester chain were analysed in detail. It has been shown that in the studied copolyesters sulphonic acid groups are extensively associated through hydrogen bonds. The process of association is complex. Interaction of sulphonic acid groups with other proton acceptor and proton donor groups existing in the polymer chain superimposes the self-association of these groups. Associated structures such as dimers and greater aggregates of sulphonic acid groups and hydrogen bonded complexes composed of SO3H groups and C(O)O and CH2CH2OCH2CH2 residues of polymer chain are mainly formed.