نتایج جستجو برای: cellulose biopolymer
تعداد نتایج: 71119 فیلتر نتایج به سال:
Chitosan is prepared by the deacetylation of chitin, the second-most abundant biopolymer in nature, and has applicability in the removal of dyes, heavy metals and radioactive waste for pollution control. In weight-reduction remedies, chitosan is used to form hydrogels with lipids and to depress the intestinal absorption of lipids. In this study, an experimental method was implemented to simulat...
A cellulose biopolymer was doped with Fe and Al forming a mesoporous composite. The composite showed excellent adsorption capacities of 117.86 mg g −1 95.62 for Reactive red 21 blue 19 respectively.
Cellulose is the most abundant biopolymer of nature, and it is widely used in the syn‐ thesis of new materials as well as in the adsorption of dye. This study reports a litera‐ ture review (articles) and technology review (patents) about publications and product invention, which contain information on the use of cellulose on the adsorption of dyes in the period 2004–2014. For this work, researc...
Cellulose, chitin and chitosan are the most abundant biopolymer on earth and constitute an important class of biodegradable materials. The decomposition of three major biopolymers viz. chitin, chitosan and cellulose are studied using simultaneous thermal analysis i.e. thermogravimetry/differential thermal analyzer (TG/DTA). Thermal analysis is performed from ambient temperature to 700 °C in a f...
The exploration of biological polymer is a new interest due to its favorable properties used in biomedical and clinical applications. Within the used biopolymer, cellulose emerged as a most exploitable functional material at nanoscale. Working with nanosize cellulose, provides some additional advantages compare to other manmade functional polymers. The fabrication of cellulosic scaffold as a pl...
Cellulose is the most abundant biopolymer in nature and has a broad range of applications in the pharmaceutical, food and biomedical fields. This review article describes the functionalization conditions, crosslinking agents, reaction pathways and the resulting physicochemical and mechanical properties of functionalized cellulose derivatives. The discussion is focused on aqueous reactions and c...
Cellulose sulfuric acid was used as an efficient biopolymer-based catalyst for the synthesis of tetrahydropyrimido[4,5-b]quinoline-2,4,6-triones and hexahydro-2H-pyrazolo[5,4-b]quinoline-6-ones via three component reaction of aldehyde, 5,5-dimethyl-1,3-cyclohexadione and 6-amino-1,3-dimethyluracil or 5-amino-3-methyl-1-phenypyrazole under solvent-free conditions at 90 oC. The major advantages o...
Cellulose sulfuric acid was used as an efficient biopolymer-based catalyst for the synthesis of tetrahydropyrimido[4,5-b]quinoline-2,4,6-triones and hexahydro-2H-pyrazolo[5,4-b]quinoline-6-ones via three component reaction of aldehyde, 5,5-dimethyl-1,3-cyclohexadione and 6-amino-1,3-dimethyluracil or 5-amino-3-methyl-1-phenypyrazole under solvent-free conditions at 90 oC. The major advantages o...
Amanda Williams, University of South Carolina, 2012 SURF Fellow Advisor: Prof. Hamid Garmestani Graduate Mentor: Parisa Pooyan Introduction Many biopolymers in place today lack native biomechanical characteristics of the target tissue and are mechanically and thermally unstable. A suggested material to combat these issues is a composite material made of a biopolymer matrix with a reinforcing ag...
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