Colloid and Polymer Science ( IF 2.2 ) Pub Date : 2021-09-02 , DOI: 10.1007/s00396-021-04883-w Dilara Yılmaz Aykut 1 , Öznur Yolaçan 1 , Hasine Kaşgöz 1 , Huseyin Deligoz 1
|
Loading and release behavior of a cationic dye, namely, safranine-T, through layer-by-layer (LbL) multilayered films of poly(diallyldimethylammonium chloride) (PDADMAC) and single/blend anionic polyelectrolytes (PEs), namely, poly(acrylic acid) (PAA), and poly(styrenesulfonate) (PSS), are described. The growths of PDADMAC/PSS-PAA multilayers and their safranine-T sorption behavior are monitored using the UV–Vis technique and discussed in terms of blend composition of anionic PEs and pH as well as their hydrophilicity and topography. The dye loading and desorption properties of the LbL films prepared from single/blend negatively charged PEs mainly depend on the interactions of PEs and safranine T. Strong interactions between PSS and safranine T result in a higher dye entrapping inside LbL films whereas either PAA-rich or single PAA-based LbL film exhibits larger dye desorption. A higher PSS content in the feed blend composition leads to an observable increase in θave and surface roughness whereas the use of PAA can yield a flatter surface due to its partially recomposed chain conformational structure at pH 11. Consequently, LbL multilayers obtained from single and blend polyanions can be considered as an encouraging material platform for the controlled release of charged species such as protein, drug, and dye. because of their tunable physicochemical and morphological properties as well as surface wettability.
Graphical abstract
中文翻译：
从单一/混合聚阴离子的 LbL 薄膜中释放可调的番红 T
阳离子染料，即番红-T，通过聚（二烯丙基二甲基氯化铵）（PDADMAC）和单一/混合阴离子聚电解质（PEs）的逐层（LbL）多层膜的加载和释放行为，即聚（丙烯酸酸）（PAA）和聚（苯乙烯磺酸盐）（PSS）。PDADMAC/PSS-PAA 多层膜的生长及其番红-T 吸附行为使用 UV-Vis 技术进行监测，并根据阴离子 PE 的共混组成和 pH 值以及它们的亲水性和形貌进行讨论。由单一/混合带负电荷的 PEs 制备的 LbL 薄膜的染料负载和解吸性能主要取决于 PEs 和番红 T 的相互作用。PSS 和番红 T 之间的强相互作用导致 LbL 膜内更高的染料截留，而富含 PAA 或单个基于 PAA 的 LbL 膜表现出更大的染料解吸。饲料混合物组合物中较高的 PSS 含量导致可观察到的增加θ ave和表面粗糙度，而使用 PAA 可以产生更平坦的表面，因为它在 pH 11 时部分重组了链构象结构。因此，从单一和混合聚阴离子获得的 LbL 多层膜可以被认为是一种令人鼓舞的材料平台，用于控制释放带电物质，如蛋白质、药物和染料。因为它们具有可调的物理化学和形态特性以及表面润湿性。
京公网安备 11010802027423号