pH‐ and thermal characteristics of graft hydrogels based on chitosan and poly(dimethylsiloxane)

Kim, In Young; Kim, Seon Jeong; Shin, Mi; Lee, Young Moo; Shin, Dong Ic; Kim, Sun I.

doi:10.1002/app.10626

Cited by 39 publications

(15 citation statements)

References 22 publications

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“…Slight decreases in its critical surface energy were observed whereas tensile strength and elongation were insignificantly changed as compared to the unmodified chitosan [8]. Swelling behavior of PDMS-grafted chitosan [16] and of PDMS/poly(vinyl alcohol)-chitosan hydrogel [17] were reported by Kim et al It was found that equilibrium water content (EWC) of the materials in these two systems decreased as PDMS content increased in timedependent, temperature-dependent, and pH-dependent behavior. The depression in EWC, which is unfavorable for would healing application, is attributed to the hydrophobic characteristics of PDMS.…”

Section: Introductionmentioning

confidence: 77%

Synthesis, characterization and properties of chitosan modified with poly(ethylene glycol)–polydimethylsiloxane amphiphilic block copolymers

Rutnakornpituk

Ngamdee

Phinyocheep

2005

Polymer

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Section: Introductionmentioning

confidence: 77%

Synthesis, characterization and properties of chitosan modified with poly(ethylene glycol)–polydimethylsiloxane amphiphilic block copolymers

Rutnakornpituk

Ngamdee

Phinyocheep

2005

Polymer

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“…Kim et al synthesized hydrogels based on grafting chitosan with epoxy-terminated poly(dimethylsiloxane) (PDMS) also by using UV irradiation [96]. Hydrogels based on PNIPAAm-grafted chitosan were obtained but in this case by applying ␥-irradiation [97].…”

Section: Graft Copolymerized Hydrogelsmentioning

confidence: 99%

Chitosan derivatives obtained by chemical modifications for biomedical and environmental applications

Alves

Mano

2008

International Journal of Biological Macromolecules

713

335

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Chitosan is a natural based polymer, obtained by alkaline deacetylation of chitin, which presents excellent biological properties such as biodegradability and immunological, antibacterial and wound-healing activity. Recently, there has been a growing interest in the chemical modification of chitosan in order to improve its solubility and widen its applications. The main chemical modifications of chitosan that have been proposed in the literature are reviewed in this paper. Moreover, these chemical modifications lead to a wide range of derivatives with a broad range of applications. Recent and relevant examples of the distinct applications, with particular emphasis on tissue engineering, drug delivery and environmental applications, are presented.

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“…Chlorination with methanesulfonyl chloride provides C6-chlorinated chitosan that can react with the telechelic polymers in order to form the graft copolymers into DMF. Another PDMS prepolymer, terminated with epoxy functions, was grafted onto chitosan using UV irradiation without catalyst at room temperature [144].…”

Section: Grafting Onto Methodsmentioning

confidence: 99%

Design Polysaccharides of Marine Origin: Chemical Modifications to Reach Advanced Versatile Compounds

Chopin¹,

Guillory²,

Weiss³

et al. 2014

COC

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Polysaccharides are among the most abundant macromolecules on Earth. These polymers are easily obtained from various marine resources such as algae, microorganisms and crustacean shells. The structure of these natural carbohydrates is innovative and quite complex. Marine biopolymers represent key scaffolds toward large challenging fields, such as biomedical applications (glycosaminoglycans, regenerative medicine and drug delivery) and tailored biomaterials. Chemical modifications can be applied to modify their final properties in a specific purpose. New functional glycans are achievable and represent a real potential with their intrinsic biocompatibility and biodegradability. Hydroxyl groups are ubiquitous in polysaccharides structure and involved in most of the chemical modifications. The most useful functionalities are ester, ether, amide, amine and alkyl groups. The starting materials could be a natural or depolymerized polymers and the reaction considered with a regioselective point of view. In this review, we will focus on chitin polysaccharide, which is extracted according to industrial processing from exoskeleton of several marine crustaceans. A subsequent deacylation provides chitosan. This marine polysaccharide is very similar to cellulose, a widespread fiber plant organic polymer, except for an amine group on the C2 position instead of a hydroxyl group. Furthermore, seaweeds provide the most abundant sources of polysaccharides: alginates, agar/agarose, carrageenans and fucoidans. In order to improve the original physicochemical and biochemical properties, we will highlight the chemical modifications involving the listed marine polysaccharides of interest. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site 2

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pH‐ and thermal characteristics of graft hydrogels based on chitosan and poly(dimethylsiloxane)

Cited by 39 publications

References 22 publications

Synthesis, characterization and properties of chitosan modified with poly(ethylene glycol)–polydimethylsiloxane amphiphilic block copolymers

Synthesis, characterization and properties of chitosan modified with poly(ethylene glycol)–polydimethylsiloxane amphiphilic block copolymers

Chitosan derivatives obtained by chemical modifications for biomedical and environmental applications

Design Polysaccharides of Marine Origin: Chemical Modifications to Reach Advanced Versatile Compounds

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