دانلود Mechanical Properties of Composite Hydrogels of Alginate and Cellulose Nanofibrils

ترجمه فارسی Mechanical Properties of Composite Hydrogels of Alginate and Cellulose Nanofibrils
قیمت : 400,000 ریال
شناسه محصول : 2009440
نویسنده/ناشر/نام مجله : Polymers
سال انتشار: 2017
تعداد صفحات انگليسي : 19
نوع فایل های ضمیمه : pdf+word
حجم فایل : 10 Mb
کلمه عبور همه فایلها : www.daneshgahi.com
عنوان انگليسي : Mechanical Properties of Composite Hydrogels of Alginate and Cellulose Nanofibrils

چکیده

Abstract

Alginate and cellulose nanofibrils (CNF) are attractive materials for tissue engineering and regenerative medicine. CNF gels are generally weaker and more brittle than alginate gels, while alginate gels are elastic and have high rupture strength. Alginate properties depend on their guluronan and mannuronan content and their sequence pattern and molecular weight. Likewise, CNF exists in various qualities with properties depending on, e.g., morphology and charge density. In this study combinations of three types of alginate with different composition and two types of CNF with different charge and degree of fibrillation have been studied. Assessments of the composite gels revealed that attractive properties like high rupture strength, high compressibility, high gel rigidity at small deformations (Young’s modulus), and low syneresis was obtained compared to the pure gels. The effects varied with relative amounts of CNF and alginate, alginate type, and CNF quality. The largest effects were obtained by combining oxidized CNF with the alginates. Hence, by combining the two biopolymers in composite gels, it is possible to tune the rupture strength, Young’s modulus, syneresis, as well as stability in physiological saline solution, which are all important properties for the use as scaffolds in tissue engineering.

Keywords: alginate TEMPO cellulose nanofibrils nanocellulose
این برای گرایش های: کلیه گرایش ها، کاربرد دارد. همچنین این در گرایش های: کلیه گرایش ها، می تواند کاربرد داشته باشد. همچنین این در گرایش های: کلیه گرایش ها، می تواند کاربرد داشته باشد. [ برچسب: ]

Skip Navigation Links