Application of Polyvinyl Alcohol (PVA)/Carboxymethyl Cellulose (CMC) Hydrogel Produced by Conventional Crosslinking or by Freezing and Thawing

Salmawi, Kariman M. El

doi:10.1080/10601320701285045

Cited by 78 publications

(25 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this context, nanosensors can help to extend the new practices of precision farming by detecting and rectifying agronomic problems in a very short time span. Nanomaterials, such as hydrogels and zeolites, were reported to be useful for improving the water-holding capacity of soil [217] and to absorb environmental contaminants [218]. Recently, efforts have been made to develop a nanoparticle modified chitosan sensor for the determination of heavy metals [42].…”

Section: Soil Health Improvementmentioning

confidence: 99%

Chitosan nanoparticle based delivery systems for sustainable agriculture

Kashyap

Xiang

Heiden

2015

International Journal of Biological Macromolecules

644

228

View full text Add to dashboard Cite

Section: Soil Health Improvementmentioning

confidence: 99%

Chitosan nanoparticle based delivery systems for sustainable agriculture

Kashyap

Xiang

Heiden

2015

International Journal of Biological Macromolecules

644

228

View full text Add to dashboard Cite

“…The unique water retention property of PVA/nanocellulose hydrogel possesses high water retention in soil, suggesting its suitability as super absorbents in desert regions [70]. Additionally, their application was amplified as coating material for control-release fertilizer [71].…”

Section: Applicationsmentioning

confidence: 99%

A Review of Natural Fiber Reinforced Poly(Vinyl Alcohol) Based Composites: Application and Opportunity

et al. 2015

View full text Add to dashboard Cite

Natural fibers are fine examples of renewable resources that play an important role in the composites industry, which produces superior strength comparable to synthetic fibers. Poly(vinyl alcohol) (PVA) composites in particular have attracted enormous interest in view of their satisfactory performance, properties and biodegradability. Their performance in many applications such as consumer, biomedical, and agriculture is well defined and promising. This paper reviews the utilization of natural fibers from macro to nanoscale as reinforcement in PVA composites. An overview on the properties, processing methods, biodegradability, and applications of these composites is presented. The advantages arising from chemical and physical modifications of fibers or composites are discussed in terms of improved properties and performance. In addition, proper arrangement of nanocellulose in composites helps to prevent agglomeration and results in a better dispersion. The limitations and challenges of the composites and future works of these bio-composites are also discussed. This review concludes that PVA composites have potential for use in numerous applications. However, issues on technological feasibility, environmental effectiveness, and economic affordability should be considered.

show abstract

“…Also, it exhibits a low permeability to oxygen, which is attributed to the large inter-cohesive energy that results from the highly polar alcohol (−OH) group [22,23]. PVA/CMC and PVA/ Polyethylene oxide (PEO)/CMC blends were used as dye removal materials and have wide applications in biomedical materials and agriculture [2,24,25]. Also, PVP/CMC is flexible blend, semi-transparent and permits the observation of the healing process so it can be used as a dressing material [18,26,27].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and investigation of the electrical and dielectric properties of Co3O4/(CMC+PVA) nanocomposite films

Sayed

El‐Gamal

2015

J Polym Res

View full text Add to dashboard Cite

Cobalt oxide (Co 3 O 4 ) nanoparticles (NPs), with average crystallite size<61 nm, were prepared by a sol-gel method. Two allowed direct optical band gaps of 1.445 and 1.915 eV are found for Co 3 O 4 NPs. Sodium carboxymethyl cellulose (Na-CMC)/polyvinyl alcohol (PVA) blend was doped with Co 3 O 4 at different concentrations<1.0 wt.% to study the electrical and dielectric properties of these nanocomposite films. Scanning electron microscopy images revealed a good dispersion of Co 3 O 4 NPs on the surface of the CMC/PVA films. The current-voltage characteristics are of non-ohmic behavior. The dielectric permittivity (ε') was studied in the frequency and temperature range of 5.0 kHz-5.0 MHz and 308-408 K and was found to depend on the Co 3 O 4 content. The dielectric loss (ε^) also increases and shows wave-like behavior with increasing Co 3 O 4 ratio. Increasing Co 3 O 4 NPs content leads to the formation of more number of three-dimensional semiconducting connected networks inside CMC/PVA matrix, leading to increasing both DC and AC conductivities. The correlated barrier hopping (CBH) is the most suitable mechanism to explain the AC conduction behavior in the Co 3 O 4 / Na-CMC/ PVA nanocomposite films.

show abstract

Application of Polyvinyl Alcohol (PVA)/Carboxymethyl Cellulose (CMC) Hydrogel Produced by Conventional Crosslinking or by Freezing and Thawing

Cited by 78 publications

References 14 publications

Chitosan nanoparticle based delivery systems for sustainable agriculture

Chitosan nanoparticle based delivery systems for sustainable agriculture

A Review of Natural Fiber Reinforced Poly(Vinyl Alcohol) Based Composites: Application and Opportunity

Synthesis and investigation of the electrical and dielectric properties of Co3O4/(CMC+PVA) nanocomposite films

Contact Info

Product

Resources

About