Carboxymethyl starch/montmorillonite composite microparticles: Properties and controlled release of isoproturon

Wilpiszewska, Katarzyna; Spychaj, Tadeusz; Paździoch, Waldemar

doi:10.1016/j.carbpol.2015.09.021

Cited by 30 publications

(15 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1b) spectra, new characteristic peaks were observed at 1643, 1438, and 923 cm −1 which are attributed to asymmetric stretching vibration of C=O, C-N stretching, and S-O stretching of the SO 3 H, respectively [33]. The additional characteristic absorption bands of 1537 and 2771 cm −1 for N-H stretching and C-H stretching of -N(CH 3 ) 2 of DMAPMAm [25] were observed in the spectra of GG-g-poly(AMPS-coDMAPMAm)-8 ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Amphoteric gellan gum-based terpolymer–montmorillonite composite: synthesis, swelling, and dye adsorption studies

Zauro

Vishalakshi

2017

Int J Ind Chem

View full text Add to dashboard Cite

A terpolymer gel, Gellan gum-graft-poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-dimethylaminopropyl methacrylamide) and its composite with the clay, Montmorillonite, was prepared by free-radical polymerization and crosslinking reactions in solution. The terpolymer gel and the clay composite were characterized using FTIR, TGA, SEM, and X-ray diffraction techniques. Swelling studies were carried out in different pH and salt solutions. The gel showed maximum swelling capacity in alkaline medium, while the composite showed higher swelling in neutral medium. The swelling of the gel and the composite followed second kinetics model and water transport is found to be a less Fickian diffusion process. The terpolymer gel and the composite were evaluated for the adsorption of rhodamine B (RhB) and chromotrope 2R (C2R) dyes. Rhodamine B is found to be adsorbed to a higher extent than chromotrope 2R and the adsorption isotherm studies suggested that adsorption of both RhB and C2R on the terpolymer gel was best explained by Langmuir model, while the adsorption on the Composite fitted best into Freundlich model. Similarly, the adsorption kinetics data for both RhB and C2R dyes followed the second-order kinetics.

show abstract

Section: Resultsmentioning

confidence: 99%

Amphoteric gellan gum-based terpolymer–montmorillonite composite: synthesis, swelling, and dye adsorption studies

Zauro

Vishalakshi

2017

Int J Ind Chem

View full text Add to dashboard Cite

show abstract

“…In the last few years, many researchers have examined the release of model compounds, such as organoclay adsorbents and polysaccharide, or their derivative microparticles . Kumar et al .…”

Section: Introductionmentioning

confidence: 99%

“…In the last few years, many researchers have examined the release of model compounds, such as organoclay adsorbents and polysaccharide, or their derivative microparticles. 2,[4][5][6][7][8] Kumar et al 4 prepared pesticide (imidacloprid)-loaded sodium alginate (SA) nanoparticles by an emulsion crosslinking technology. Transmission electron micrographs confirmed that the size of the pesticide-loaded nanoparticles ranged between 50 and 100 nm.…”

Section: Introductionmentioning

confidence: 99%

“…Efficacy tests reflected that the encapsulated formulation was more effective than even that of plain pesticide. Wilpiszewska et al 5 prepared novel, highly substituted carboxymethyl starch (CMS) based microparticles containing sodium montmorillonite (Na-MMT) by crosslinking with Al 31 . This CMS-montmorillonite (MMT) composite system was used to encapsulate the herbicide isoproturon, and the encapsulation efficiency reached 75%.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation of a biodegradable poly(vinyl alcohol)–starch composite film and its application in pesticide controlled release

Wang

Jia

Zhou

et al. 2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

With the herbicide 2,4‐dichlorophenoxyacetic acid (2,4‐D) as a model drug, a series of poly(vinyl alcohol)–starch (PVA–ST) composite films for controlled drug release were prepared by a casting method. The morphology, structure, and release properties were systematically investigated. The results show that when the PVA–ST composite film containing 2,4‐D (PSD) was immersed in water, the drug‐release rate was high, whereas the introduction of sodium montmorillonite (Na‐MMT) and an alginate ion‐crosslinking structure to PSD significantly reduced the release rate and maintained the sustained release of the model drug for a longer period. A leaching experiment through the soil layer showed that the PSD drug‐loaded film with Na‐MMT and the alginate ion‐crosslinking structure (PSDMA) possessed good release properties. The cumulative leached amount of the herbicide 2,4‐D after eight irrigations was reduced to 57.6% from 100%. In addition, the PSDMA film showed favorable mechanical and thermal properties. This composite film is expected to have potential applications in the fields of agriculture, drug delivery, and more. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45051.

show abstract

“…Signals at 1380 cm −1 corresponding to -CH 2 of CS appeared also as a weak peak in this complex system. e FTIR spectrum of CMS ( Figure 14) has the characteristic carboxylate absorption band at 1570 cm −1 [38]. e -CH 2 symmetrical stretch band was found shifted to 1420 cm −1 [39]; previous bands, along with the 1320 cm −1 band, were the characteristics of CMS [40].…”

mentioning

confidence: 97%

Effect of Experimental Parameters on the Formation of Hydrogels by Polyelectrolyte Complexation of Carboxymethylcellulose, Carboxymethyl Starch, and Alginic Acid with Chitosan

Mejía

Contreras

Delgado

et al. 2019

International Journal of Chemical Engineering

View full text Add to dashboard Cite

Differences in morphology, pH, and electric charge of chitosan (CS) based hydrogels prepared by complexation with carboxymethylcellulose (CMC), carboxymethylated starch (CMS), and alginic acid (AA) at different polymers ratios and changing the order of addition were studied. CMC/CS and AA/CS hydrogels were amorphous and porous three-dimensional networks, with smaller pores at higher anionic polymer/CS ratios. Gelation time increased the agglomeration in the case of CMC/CS and CMS/CS gels. CMC/CS gels showed negative zeta potential values around −372 mV to −51 mV and CMS/CS gels in the range of −526 mV and −158 mV.

show abstract

Carboxymethyl starch/montmorillonite composite microparticles: Properties and controlled release of isoproturon

Cited by 30 publications

References 28 publications

Amphoteric gellan gum-based terpolymer–montmorillonite composite: synthesis, swelling, and dye adsorption studies

Amphoteric gellan gum-based terpolymer–montmorillonite composite: synthesis, swelling, and dye adsorption studies

Preparation of a biodegradable poly(vinyl alcohol)–starch composite film and its application in pesticide controlled release

Effect of Experimental Parameters on the Formation of Hydrogels by Polyelectrolyte Complexation of Carboxymethylcellulose, Carboxymethyl Starch, and Alginic Acid with Chitosan

Contact Info

Product

Resources

About