This study was focused on the synthesis and characterization of some ion exchange resins based on acrylic copolymers, and the composite formation by CaCO₃ by carbonate diffusion protocol. The resins were deeply investigated in terms of chemical composition (anionic, cationic, amphoteric) and crosslinker content, by: swelling degree, ion-exchange capacity, volume variation, charge density, size. FTIR-ATR spectroscopy demonstrated the presence of the functional group in the acrylic copolymers, with the formation of functionalized acrylic ion exchange resins. The materials surface morphology was evidenced using scanning electron microscopy. X-ray diffraction showed that CaCO₃ polymorphism depends on the chemical structure of the used ionic exchange resins. Some of the obtained resins and their composites with CaCO₃ were tested as sorbents for small organic molecules, such as dyes (neutral red, NR and bromocresol green, BCG) and antibiotics (tetracycline hydrochloride, TCH). While the maximum sorption capacity for BCG and NR dyes is similar (2.247 mg/g and 2.288 mg/g, respectively), but depends on the sorbent's functional groups, all the investigated samples showed a significantly higher sorption capacity for TCH, up to 50.25 mg/g. The maximum TCH release profile was improved by CaCO₃ crystallization, suggesting that the composite samples could efficiently be used as drug delivering systems.

本研究的重点是一些基于丙烯酸共聚物的离子交换树脂的合成和表征，以及通过碳酸盐扩散协议由 CaCO ₃形成的复合材料。在化学成分（阴离子、阳离子、两性）和交联剂含量方面对树脂进行了深入研究，包括：溶胀度、离子交换容量、体积变化、电荷密度、尺寸。FTIR-ATR 光谱证明了丙烯酸共聚物中存在官能团，形成了官能化的丙烯酸离子交换树脂。使用扫描电子显微镜观察材料表面形态。X 射线衍射表明 CaCO ₃多晶型取决于所用离子交换树脂的化学结构。一些获得的树脂及其与 CaCO ₃的复合物被测试作为有机小分子的吸附剂，例如染料（中性红、NR 和溴甲酚绿，BCG）和抗生素（四环素盐酸盐，TCH）。虽然 BCG 和 NR 染料的最大吸附容量相似（分别为 2.247 毫克/克和 2.288 毫克/克），但取决于吸附剂的官能团，所有研究的样品都显示出显着更高的 TCH 吸附容量，高达 50.25毫克/克。CaCO ₃结晶改善了最大TCH释放曲线，表明复合样品可以有效地用作药物递送系统。