Preparation and characterization of chitosan beads grafted with poly(methyl methacrylate) for controlled release study

Ghapar, Nurul Faizah Abd; Baharin, Hashim; Karim, Khairil Juhanni Abd

doi:10.1063/1.5047195

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Authors also studied adsorption and desorption of urea for agronomic applications. 52 Poly caprolactone (PCL), polyether polyol (PEP) and PU were also reported for fabrication of agriculture hydrogels. 53 Chemical structures of synthetic polymers used in hydrogel fabrication are provided in Figure 5.…”

Section: Natural-synthetic Hydrogel Blendsmentioning

confidence: 99%

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Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Azeem

Islam

Khan

et al. 2023

Polymers for Advanced Techs

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Modern world is searching for water efficient agriculture techniques as irrigation is becoming scarce. Limited water resources and more food demand are the two key challenges in agriculture. Hydrogels which can respond intelligently by pH, temperature, light, ionic strength, osmotic pressure, magnetic or electric field changes are termed as intelligent or smart hydrogels which are analogous to conventional hydrogels in preparatory methods and features. Lag phase, constant release and decay phase are three steps involved in release of nutrients from polymeric hydrogels. In fact, hydrogels act as little reservoirs of water and dissolve nutrients that are released in controlled manner anchored by plant roots via capillary action. Hydrogels also sustain optimum amount of water in water stress conditions and reabsorb water in moist conditions which ultimately increases seedling, seed germination, plant growth and crop yield. Fertilizer and salt release are majorly dependent upon pH and temperature followed by diffusion‐controlled mechanism. Cross‐linkers, binders and fillers play pivotal role in determining properties, architecture and hydrogel pores. In comparison to potassium (K+) and phosphate (PO4−3) ions, nitrates (NO3−1) and ammonium (NH4+1) ions exhibited faster release rate. This review spotlights application prospects of three dimensional hydrogel in agriculture. Initially, properties of hydrogels, their classification, preparatory methods, effect of natural‐synthetic‐polymer blending and role of fillers are stated. Afterward, hydrogel functioning, significance, advantages, mechanism of fertilizer release and agriculture specific applications of hydrogels are comprehensively described. In conclusion, extraordinary biocompatible, cheaper, stable, biodegradable, durable, non‐toxic and re‐wettable characteristics of hydrogel systems motivated their utilization in agronomical applications.

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Section: Natural-synthetic Hydrogel Blendsmentioning

confidence: 99%

“…Chitosan were also grafted with PMMA as urea carrier. Authors also studied adsorption and desorption of urea for agronomic applications 52 . Poly caprolactone (PCL), polyether polyol (PEP) and PU were also reported for fabrication of agriculture hydrogels 53 .…”

Section: Introductionmentioning

confidence: 99%

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Azeem

Islam

Khan

et al. 2023

Polymers for Advanced Techs

View full text Add to dashboard Cite

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Potential Sources of Biodegradable Polymers

Singh

Chunglok

2022

Biopolymers Towards Green and Sustainable Development

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Synthetic polymers are an important class of pharmaceutical excipients that contribute significantly to the fabrication of different dosage forms. However, due to biodegradability concerns, the highly publicized disposal problem of traditional oilbased thermoplastics with a detrimental effect on the environment, has promoted the search for alternative biodegradable polymers. Biodegradable polymers are an ecofriendly, economic, and safe alternative to synthetic polymers due to their biodegradable nature and the source of origin. Biopolymers and biomaterials are available in abundance with different pharmaceutical and medical applications including drug delivery, wound healing, tissue engineering, imaging agents, etc. Moreover, biopolymers possess certain specific properties such as biocompatibility, biodegradability, low antigenicity, functionality to support cell growth, and proliferation with appropriate mechanical strength. Biopolymers are obtained from sustainable natural resources and animal processing co-products and wastes. Polysaccharides such as cellulose and starch represent the major characteristics of the family of these natural biopolymers, while other biodegradable polymers such as bacterial cellulose and sericin are also used to develop biodegradable materials. Recent advancements and development in the field of natural polymers have opened up new possibilities for the rational engineering of natural gums and mucilage towards the expansion of functional excipients suitable for industrial and medical applications. This chapter highlights the potential sources of novel biodegradable polymers with recent expansion in the processing of different novel natural polymers to develop multifunctional excipients and valorization of waste biomass to produce biopolymers.

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Preparation and characterization of chitosan beads grafted with poly(methyl methacrylate) for controlled release study

Cited by 2 publications

References 16 publications

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Eco‐friendly three‐dimensional hydrogels for sustainable agricultural applications: Current and future scenarios

Potential Sources of Biodegradable Polymers

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