Magnetic hydrogel beads based on PVA/sodium alginate/laponite RD and studying their BSA adsorption

被引：132

作者：

Mahdavinia, Gholam Reza ^{[1
]}

Mousanezhad, Sedigheh ^{[2
]}

Hosseinzadeh, Hamed ^{[1
]}

Darvishi, Farshad ^{[3
]}

Sabzi, Mohammad ^{[4
]}

机构：

[1] Univ Maragheh, Fac Sci, Dept Chem, POB 55181 83111, Maragheh, Iran

[2] Univ Maragheh, Fac Engn, Dept Mat Engn, POB 55181-83111, Maragheh, Iran

[3] Univ Maragheh, Fac Sci, Dept Microbiol, POB 55181-83111, Maragheh, Iran

[4] Univ Maragheh, Dept Chem Engn, POB 55181-83111, Maragheh, Iran

来源：

CARBOHYDRATE POLYMERS | 2016年 / 147卷

关键词：

Poly(vinyl alcohol); Sodium alginate; Magnetic beads; Nanocomposite; BSA Adsorption; Laponite RD; NANOCOMPOSITE HYDROGELS; POLY(VINYL ALCOHOL); SEPARATION; DELIVERY; BEHAVIOR; NANOPARTICLES; DISPERSION; FERROGELS; RELEASE; ALBUMIN;

D O I：

10.1016/j.carbpol.2016.04.024

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study double physically crosslinked magnetic hydrogel beads were developed by a simple method including solution mixing of sodium alginate and poly(vinyl alcohol) (PVA) containing magnetic laponite RD (Rapid Dispersion). Sodium alginate and PVA were physically crosslinked by Ca2+ and freezing-thawing cycles, respectively. Magnetic laponite RD nanoparticles were incorporated into the system to create magnetic response and strengthen the hydrogels. All hybrids double physically crosslinked hydro gel beads were stable under different pH values without any disintegration. Furthermore, adsorption of bovine serum albumin (BSA) on the hydrogel beads was investigated on the subject of pH, ion strength, initial BSA concentration, and temperature. Nanocomposite beads exhibited maximum adsorption capacity for BSA at pH = 4.5. The experimental adsorption isotherm data were well followed Langmuir model and based on this model the maximum adsorption capacity was obtained 127.3 mg g(-1) at 308 K. Thermodynamic parameters revealed spontaneous and monolayer adsorption of BSA on magnetic nanocomposites beads. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：379 / 391

页数：13

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