Kopishev Eldar, Jafarova Fatima, Tolymbekova Lyazat, Seitenova Gaini, Sаfarov Ruslan
Department of Chemistry, Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana 010000, Kazakhstan.
Department of Chemistry and Chemical Technology, Kh. Dosmukhamedov Atyrau University, Studenchesky Ave. 1, Atyrau 060011, Kazakhstan.
Polymers (Basel). 2025 May 21;17(10):1414. doi: 10.3390/polym17101414.
This study examines the surface-dependent formation of interpolymer complexes (IPCs) by the layer-by-layer (LBL) deposition method. The materials used in this analysis are poly(acrylic acid) (PAA) combined with cellulose ethers, namely methyl cellulose (MC), hydroxypropyl cellulose (HPC), and hydroxyethyl cellulose (HEC), and poloxamers PX188 and PX407. PMMA, PS, and glass surfaces have been used to study the influence of hydrophobicity and hydrophilicity on IPC growth and its properties. Through contact angle measurements, PMMA and PS were found to be hydrophobic and glass hydrophilic. It was revealed by gravimetric analysis that IPC films reveal the highest growth on PMMA substrates, followed by PS and glass. Both the molecular weight of HEC and the hydrophobicity of the surface considerably affected the growth. Hydrogen-bonded complexation was evident by means of FTIR spectroscopy, while changes in some characteristic absorption bands demonstrated the extent of interactions between polymers. Scanning electron microscopy showed that variations in the microstructure of surfaces occur; PAA-MC and poloxamer complex layers were well organized on hydrophobic substrates. Thus, the experimental results showed surface properties, especially hydrophobicity, to be important for IPC growth and structure. These findings contribute to the understanding of IPC behavior on different substrates, thus giving insights into applications in drug delivery, coatings, and functional films.
本研究通过层层（LBL）沉积法研究了聚合物间复合物（IPC）的表面依赖性形成。本分析中使用的材料是聚丙烯酸（PAA）与纤维素醚，即甲基纤维素（MC）、羟丙基纤维素（HPC）和羟乙基纤维素（HEC），以及泊洛沙姆PX188和PX407。聚甲基丙烯酸甲酯（PMMA）、聚苯乙烯（PS）和玻璃表面被用于研究疏水性和亲水性对IPC生长及其性质的影响。通过接触角测量发现，PMMA和PS是疏水的，而玻璃是亲水的。重量分析表明，IPC膜在PMMA基材上生长最快，其次是PS和玻璃。HEC的分子量和表面疏水性都对生长有显著影响。傅里叶变换红外光谱（FTIR）表明存在氢键络合，而一些特征吸收带的变化表明了聚合物之间相互作用的程度。扫描电子显微镜显示表面微观结构存在差异；PAA-MC和泊洛沙姆复合层在疏水基材上排列良好。因此，实验结果表明表面性质，尤其是疏水性，对IPC的生长和结构很重要。这些发现有助于理解IPC在不同基材上的行为，从而为药物递送、涂层和功能膜的应用提供见解。
