کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9890860 | 1540336 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low viscosity hydrogel of guar gum: Preparation and physicochemical characterization
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Low viscosity hydrogel of guar gum: Preparation and physicochemical characterization Low viscosity hydrogel of guar gum: Preparation and physicochemical characterization](/preview/png/9890860.png)
چکیده انگلیسی
Guar gum was cross-linked with glutaraldehyde and characterized by GPC, rheology, WADX, SEM and TGA. This guar gum is a galactomannan polysaccharide, that contains small amount of arabinose, glucose and uronic acid, besides galactose and mannose. The polymer has high molar mass, with M¯w, M¯n and M¯v values of 2.0 Ã 106, 1.2 Ã 106 and 1.9 Ã 106 g/mol, respectively. The reticulation follows a slow process and lead to a viscosity increase of 40 times compared with the original gum solution. The final viscosity was similar to that of Hylan G-F 20, a hyaluronate derivative, commercially used in viscosupplementation treatment. The gel contains 95.6% of water and the amount of residual glutaraldehyde is much lower than the LD-50. Porous structure was detected by SEM and thermal stability was improved by the cross-linking. The low viscosity, the small amount of remained glutaraldehyde, and the thermal stability indicates that the guar hydrogel has potential to be applied as biomaterial with specific rheological requirements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 37, Issues 1â2, 30 October 2005, Pages 99-104
Journal: International Journal of Biological Macromolecules - Volume 37, Issues 1â2, 30 October 2005, Pages 99-104
نویسندگان
Pablyana L.R. Cunha, Rondinelle R. Castro, Francisco A.C. Rocha, Regina C.M. de Paula, Judith P.A. Feitosa,