pH-sensitive starch-g-poly(acrylic acid)/sodium alginate hydrogels for controlled release of diclofenac sodium

Chang, Airong

doi:10.1007/s13726-015-0311-x

Cited by 39 publications

(14 citation statements)

References 27 publications

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“…In SAP preparation, a chemical modification of starch to improve performance has been studied. Although there are many kinds of chemical modification, the most typical method is free radical graft copolymerization of vinyl monomers onto starch [13,14,15,16,17,18,19,20,21]. Except in a few cases [13], vinyl monomers used for copolymerization with starch are acrylic acid or acrylamide.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of Superabsorbent Polymers Based on Starch Aldehydes and Carboxymethyl Cellulose

et al. 2018

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Superabsorbent polymers (SAPs) are crosslinked hydrophilic polymers that are capable of absorbing large amounts of water. Commercial SAPs are mostly produced with acrylic acid that cannot be easily biodegraded. Therefore, in this study, polysaccharide-based SAPs using carboxymethyl cellulose as a major component were prepared. Starch aldehydes and citric acid were selected due to their environment-friendly, non-toxic, and biodegradable properties compared to conventional crosslinking agents. Starch aldehydes were prepared by periodate oxidation, which forms aldehyde groups by taking the places of C–OH groups at C-2 and C-3. Furthermore, starch aldehydes were analyzed through the change in FT-IR spectra, the aldehyde quantitation, and the morphology in FE-SEM images. In the crosslinking of polysaccharide-based SAPs, the acetal bridges from starch aldehydes led to a large amount of water entering the network structure of the SAPs. However, the ester bridges from citric acid interfered with the water penetration. In addition, the swelling behavior of the SAPs was analyzed by the Fickian diffusion model and the Schott’s pseudo second order kinetics model. The relationship between swelling behavior and morphology of the SAPs was analyzed by FE-SEM images. In conclusion, polysaccharide-based SAPs were well prepared and the highest equilibrium swelling ratio was 87.0 g/g.

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Section: Introductionmentioning

confidence: 99%

“…Other materials are added to improve the performance of the starch/acrylic acid copolymer. For example, small amounts of itaconic acid improve water absorption [17] while alginate increases pH sensitivity of the SAPs [18]. In addition, there have been studies conducted on preparing starch-based composite SAPs.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Superabsorbent Polymers Based on Starch Aldehydes and Carboxymethyl Cellulose

et al. 2018

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“…The interconnected pores allow chondrocytes to penetrate into the scaffolds, which proliferate to form cell aggregate. The chondrocytes highly express chondrogenic‐specific markers, such as collagen II and aggrecan …”

Section: Scaffoldsmentioning

confidence: 99%

Progress in Articular Cartilage Tissue Engineering: A Review on Therapeutic Cells and Macromolecular Scaffolds

Zhao

Fan

Chen

et al. 2019

Macromolecular Bioscience

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Repair and regeneration of articular cartilage lesions have always been a major challenge in the medical field due to its peculiar structure (e.g., sparsely distributed chondrocytes, no blood supply, no nerves). Articular cartilage tissue engineering is considered as one promising strategy to achieve reconstruction of cartilage. With this perspective, the articular cartilage tissue engineering has been widely studied. Here, the recent progress of articular cartilage tissue engineering is reviewed. The ad hoc therapeutic cells and growth factors for cartilage regeneration are summarized and discussed. Various types of bio/macromolecular scaffolds together with their pros and cons are also reviewed and elaborated.

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“…Polyethylene glycol shows good toxicological safety when it comes to acute and chronic oral toxicity or skin compatibility, supported by absorption/excretion investigations. Therefore, they have been used for many years in cosmetics, foodstuffs and the pharmaceutical industry and are registered in all relevant pharmacopeia's [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Polyhydroxyalkanoate Blends from Tamarind Seed: Xyloglucan and Polyhydroxybutyrate Precursors

Sakthiselvan¹

2017

IJRASET

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Polyhydroxybutyrate (PHB) is biodegradable aliphatic polyester that is produced by a wide range of microorganisms. Basic PHB has relatively high glass transition and melting temperatures. To improve flexibility for potential packaging applications, PHB is synthesized with various co-polymers such as Xyloglucan (XG) leading to a decrease of the glass transitions and melting temperatures. In this work, the brittle Polyhydroxybutyrate (PHB) was blended with Xyloglucan (XG) a hemicelluloses, rich in tamarind seeds, and solvent casted with plasticizer (Polyethylene glycol) PEG which is biodegradable copolymer. Moisture absorption (%) of the blend film was determined. Thus, the results conclude that XG-PHB blend improves the process-ability to create a new type of eco-friendly blend material suitable for potential packaging applications.

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pH-sensitive starch-g-poly(acrylic acid)/sodium alginate hydrogels for controlled release of diclofenac sodium

Cited by 39 publications

References 27 publications

Preparation and Characterization of Superabsorbent Polymers Based on Starch Aldehydes and Carboxymethyl Cellulose

Preparation and Characterization of Superabsorbent Polymers Based on Starch Aldehydes and Carboxymethyl Cellulose

Progress in Articular Cartilage Tissue Engineering: A Review on Therapeutic Cells and Macromolecular Scaffolds

Biosynthesis of Polyhydroxyalkanoate Blends from Tamarind Seed: Xyloglucan and Polyhydroxybutyrate Precursors

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