Release behavior of 2,4-dichlorophenoxyacetic acid herbicide using novel porous polyacrylamide hydrogels

被引：0

作者：

Mahdavinia, Gholam Reza ^{[1
]}

Mousavi, Seyyed Bahman ^{[2
]}

Karimi, Farrokh ^{[3
]}

Marandi, Gholam Bagheri ^{[5
]}

Shahabivand, Saleh ^{[3
]}

Harati, Mohammad ^{[4
]}

机构：

[1] Univ Maragheh, Fac Sci, Dept Chem, Maragheh, Iran

[2] Univ Maragheh, Fac Agr, Dept Soil Sci, Maragheh, Iran

[3] Univ Maragheh, Fac Sci, Dept Biotechnol, Maragheh, Iran

[4] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada

[5] Islamic Azad Univ, Dept Chem, Karaj Branch, Karaj, Iran

来源：

E-POLYMERS | 2009年

关键词：

Polyacrylamide; Porous; Hydrogel; Herbicide; Release; WEAKLY BASIC DRUGS; SLOW-RELEASE; IMMOBILIZATION; ADSORPTION; POLYMERS; ALBUMIN; MATRIX;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Porous polyacrylamide (PAAm) was synthesized using calcium carbonate (CCb) micro-powder and subsequent leaching process. Polymerization was carried out in a solution environment system containing methylenebis acrylamide (MBA) and acrylamide (AAm) as crosslinker and monomer, respectively. CCb micro-powders were introduced to the polymerization solution before adding initiator. Ammonium persulfate/sodium metabisulfite (APS/SMBS) were used as a redox initiator system. HCl solution was used to remove CCb powders. The effect of MBA concentration and CCB amount on the swelling of hydrogels were studied. The porous structure of hydrogels was investigated and verified using scanning electron microscopy (SEM). 2,4-Dichlorophenoxyacetic acid (2,4-D) was loaded into the hydrogels and release of this herbicide was investigated. The effect of MBA concentration and addition of CCb on the content of released herbicide was studied. Also, the study of herbicide release in a solution under various pH revealed the pH-dependency release of 2,4-D herbicide.

引用

页数：13

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