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首页> 外文期刊>Journal of Applied Polymer Science >Synthetic Amphoteric Copolymer as a Dispersant for Aqueous Barium Titanate Slurries
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Synthetic Amphoteric Copolymer as a Dispersant for Aqueous Barium Titanate Slurries

机译：合成两性共聚物作为钛酸钡浆液的分散剂

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摘要

An amphoteric water-soluble copolymer, i.e., poly(methacrylate-co-N-(4-vinylbenzyl)-N,N-dimethylglycinate) (PMV) was synthesized and used as a dispersion agent for barium titanate (BaTiO3) (BT) particles. PMV was prepared from methacrylic acid and N-(4-vinylbenzyl)-N,N-dimethylglycinate in basic conditions through free radical Polymerization. The structure of this copolymer was verified by its IR and H-1-NMR spectra. The dispersing effects of PMV were examined and evaluated through viscosity and sedimentation measurements. The results indicate that this copolymer could uniformly disperse the particles, make the resulting suspensions less viscous and more stabilized. The dispersing ability of PMV is better than that of a commercial dispersant, ammonium polymethacrylate (PMAAN). Accordingly, the BT compacts with PMV exhibit higher dielectric constant values than those with PMAAN.
机译：合成了两性水溶性共聚物，即聚（甲基丙烯酸酯-共-N-（4-乙烯基苄基）-N，N-二甲基甘氨酸酯）（PMV），并将其用作钛酸钡（BaTiO3）（BT）颗粒的分散剂。在碱性条件下，通过自由基聚合反应，由甲基丙烯酸和N-（4-乙烯基苄基）-N，N-二甲基甘氨酸酯制备PMV。该共聚物的结构通过其IR和H-1-NMR光谱证实。通过粘度和沉降测量来检查和评估PMV的分散效果。结果表明，该共聚物可以均匀地分散颗粒，使所得的悬浮液粘度更低，稳定性更高。 PMV的分散能力比市售分散剂聚甲基丙烯酸铵（PMAAN）更好。因此，具有PMV的BT压块比具有PMAAN的BT压块表现出更高的介电常数值。

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