Polymer/zeolite nano-composite hydrogels as promising water reservoir materials: effect of clinoptilolite content on physicochemical properties

Abstract

In this work, with the aim of improving the water uptake behavior and mechanical properties, a novel nano-composite hydrogel system was synthesized using clinoptilolite as a semi-layered zeolite. Accordingly, the gelatin/SCMC-g-poly (AA-co-AAm)/clinoptilolite semi-IPN nano-composite hydrogel samples were synthesized and studied. The FTIR, XRD, SEM and EDX analysis were accomplished to confirm the successful synthesis of the nano-composite hydrogel samples. Additionally, to investigate the effect of clinoptilolite content on water uptake properties and gel characteristics of the synthesized nano-composite hydrogel samples, water absorption kinetics studies and rheological evaluations were carried out. It is obtained that, there is an optimum amount for additive content which can improve the hydrogel properties. Results showed that nano-composite hydrogel sample with 5% W/W of clinoptilolite with respect to the gelatin amount has the best efficiency from the point of view of the water absorption properties and gel characteristics. This phenomenon is related to the creation of physical cross linking in the hydrogels' structure which leads to the creation of porous hydrogels.

Sugarcane Bagasse and Nano-zeolite based Slow Release Fe Fertiliser Hydrogel: Its Synthesis and Characterization

“…So, it can be said that the process of loading nutrients into the hydrogel network was successful. Some studies found results of a similar nature (Olad et al, 2019;Dos Santos Pereira et al, 2020;Kenawy et al, 2020;Salimi et al, 2020;Pimsen et al, 2021;Mohamed et al, 2022).…”

Сорбционные Свойства Модифицированных Клиноптилолитовыми Породами Желатиновых Пленок

“…The dependence of the swelling of "alkaline" (1) and "acid" (2) gelatin in water with pH [5]: ∆m -mass gain Природные цеолиты эффективно применяются в ветеринарии для профилактики и лечения незаразных болезней, кожных заболеваний [8], в медицине -для лечения гнойных ран и ожогов [9]. Нетоксичный, доступный и недорогой природный цеолит -клиноптилолит является перспективным наполнителем модифицированных желатиновых пленок [3,[10][11][12]. Наличие в клиноптилолите поверхностных силанольных (≡Si-OH) групп, способных к электростатическому взаимодействию с положительно заряженными участками макромолекул желатина и к образованию межмолекулярных водородных связей с карбоксильными или аминогруппами [7] непосредственно, либо через прослойку молекул воды, позволяет рассматривать возможность дополнительного усиления структуры.…”