نتایج جستجو برای: carboxymethyl cellulose cmc nanoparticles

تعداد نتایج: 141522  

2013
Celina M. Miyazaki Antonio Riul David S. Dos Santos Mariselma Ferreira Carlos J. L. Constantino Marcelo A. Pereira-da-Silva Ricardo Paupitz Douglas S. Galvão Osvaldo N. Oliveira

We report on optimized architectures containing layer-by-layer (LbL) films of natural rubber latex (NRL), carboxymethyl-chitosan (CMC) and magnetite (Fe3O4) nanoparticles (MNPs) deposited on flexible substrates, which could be easily bent by an external magnetic field. The mechanical response depended on the number of deposited layers and was explained semi-quantitatively with a fully atomistic...

2015
Maryam Azizi Jafar Hemmat Seyed Morteza Seifati Ibrahim Torktaz Soodabeh Karimi

This study aimed to isolate and evaluate the cellulase activity of cellulolytic bacteria in hot springs of Dehloran, Ilam province, Iran. Water and sludge samples were collected from the hot springs and the bacterial enrichment was performed in a medium containing rice barn and carboxymethyl cellulose (CMC). The cultures were incubated at 50 °C in aerobic conditions. The bacteria were isolated ...

2012
Osama M. Abdel-Fatah Mohamed M. Hassan Ali M. Elshafei Bakry M. Haroun Housam M. Atta Abdelmageed M. Othman

Physiological studies were conducted to determine the optimum cultural conditions for maximal carboxymethyl cellulase (CMCase) formation by Aspergillus terreus DSM 826. Shaking condition at 150 rpm is favorable for the production of CMCase from rice straw and sugar cane bagasse. The highest enzyme yield was obtained at the third day of incubation at 30 °C for both cases; however CMCase formatio...

Journal: :International Journal of Biological Macromolecules 2021

In this study, a simple strategy to fabricate the cellulose aerogel with homogeneous porous structure and good compression strength properties has been demonstrated. The was simply prepared by adding styrene acrylic emulsion (SAE) TEMPO-oxidized nanofibrils (CNF), followed freeze-drying oven-heating, in which covalent bond between CNF SAE confirmed FT-IR. Meanwhile, regulation process of aeroge...

Journal: :Medžiagotyra 2023

As an important part of cultural heritage, paper relics have historical, scientific and humanistic values. However, a large number are suffering from aging, mildew, yellowing, cracks, embrittlement other threats, or even completely damaged. To enhance the strength prolong life relics, novel CMC-acrylate-OVPOSS graft copolymer was synthesized with carboxymethyl cellulose (CMC), methyl methacryla...

Journal: :ITEPA : Jurnal Ilmu dan Teknologi Pangan 2022


 Onggok is an organic waste from tapioca production rich in cellulose but has not been utilized fully for other usages. This study aimed to determine the appropriate temperature and time carboxylation process produce CMC cassava with best characteristics. used a factorial randomized block design. Factor 1 was (40oC, 55oC, 70oC) factor 2 (2 hours, 3.5 5 hours). The observed variable yield,...

Journal: :Journal of geoscience, engineering, environment and technology 2022

The value rheology of drilling mud must be in accordance with the conditions wellbore that do not lead to occurrence problems at time drilling. One efforts improve is by adding Carboxymethyl Cellulose (CMC) which useful for increasing viscosity and binding water. This study aims identify effect on use CMC originating from jackfruit skin rheological properties mud. Jackfruit an underutilized org...

Journal: :Bulletin of The Chemical Society of Ethiopia 2022

ABSTRACT. Biopolymers are referred to the bio-degradable polymer that is derived from living organisms in nature or synthesized renewable materials but needs polymerization. There consisting of monomeric units bond together through a covalent obtain large molecules. A biopolymeric blend sodium carboxymethyl cellulose/sodium alginate (Na-CMC/SA) film was prepared by casting/solvent evaporation m...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
sh. mohammadi b. ghanbarzadeh m. soti sh. ghiyasifar s. h. jalai

during storage of eggs, unfavorable changes occur due to exertion of co2 and water vapor from through of crust pinholes. one of the practical methods for preventing or reducing these changes is to use biopolymer-based coatings. in this research, five coating solutions based on carboxymethyl cellulose (cmc) and glycerol as plasticizer, oleic acid (1 and 2% v/v) and antimicrobial agents (potassiu...

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