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Merck
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Key Documents

924482

Sigma-Aldrich

Methacrylated Alginate

Medium Viscosity, Low endotoxin

Synonyme(s) :

3D Bioprinting, AlMA, AlgMA, Alginate, Methacrylate, Sodium Alginate

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About This Item

Code UNSPSC :
12162002
Nomenclature NACRES :
NA.23

Description

Degree of Substitution: 15-25%

Niveau de qualité

100

Forme

(Powder or chunk(s) or fibers)

Impuretés

<10 CFU/g Bioburden (Aerobic)
<10 CFU/g Bioburden (Fungal)
<100 EU/g Endotoxin

Couleur

white to off-white

Adéquation

conforms to structure for NMR

Application

This product is a low endotoxin version alginate methacrylate ready to be used in biomedical applications.
Alginate is an anionic polysaccharide that is widely used in pharmaceutical and biomedical applications due to its non-animal origin, low toxicity, biocompatibility, and biodegradability. Alginate hydrogels are commonly used to fabricate tissue engineering scaffolds, bioinks for 3D bioprinting, and nanocarriers for drug & gene delivery. Due to the thermal or photochemical crosslinking of the terminal methacrylates, methacrylate-functionalized alginate can be used to prepare hydrogels resistant to matrix degradation. Properties of the resulting hydrogel (e.g., stiffness, swelling ratio, rate of degradation) can be tuned by alginate molecular weight, degree of methacrylate functionalization, and crosslink density.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

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K A Smeds et al.
Journal of biomedical materials research, 54(1), 115-121 (2000-11-15)
In situ photopolymerization is an exciting new technique for tissue engineering. Two photocrosslinkable polysaccharides composed of alginate and hyaluronan are described that upon photolysis form soft, flexible, and viscoelastic hydrogels. The degree of methacrylate modification and thus covalent affects mechanical
Siddhesh N Pawar et al.
Biomaterials, 33(11), 3279-3305 (2012-01-28)
Alginates have become an extremely important family of polysaccharides because of their utility in preparing hydrogels at mild pH and temperature conditions, suitable for sensitive biomolecules like proteins and nucleic acids, and even for living cells such as islets of
Jia Jia et al.
Acta biomaterialia, 10(10), 4323-4331 (2014-07-08)
Recent advances in three-dimensional (3-D) printing offer an excellent opportunity to address critical challenges faced by current tissue engineering approaches. Alginate hydrogels have been used extensively as bioinks for 3-D bioprinting. However, most previous research has focused on native alginates
Oju Jeon et al.
Biomaterials, 30(14), 2724-2734 (2009-02-10)
Photocrosslinked and biodegradable alginate hydrogels were engineered for biomedical applications. Photocrosslinkable alginate macromers were prepared by reacting sodium alginate and 2-aminoethyl methacrylate in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride and N-hydroxysuccinimide. Methacrylated alginates were photocrosslinked using ultraviolet light with 0.05% photoinitiator.
Andrew D Rouillard et al.
Tissue engineering. Part C, Methods, 17(2), 173-179 (2010-08-14)
Methods for seeding high-viability (>85%) three-dimensional (3D) alginate-chondrocyte hydrogel scaffolds are presented that employ photocrosslinking of methacrylate-modified alginate with the photoinitiator VA-086. Comparison with results from several other photoinitiators, including Irgacure 2959, highlights the role of solvent, ultraviolet exposure, and
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