نتایج جستجو برای: nanocrystalline cellulose

تعداد نتایج: 40113  

2012
Michael Ioelovich

Nanocrystalline cellulose particles are new class of cellulose materials that can find the wide application in various technical areas, biotechnology and medicine. The nanoparticles are usually made by treatment or initial cellulose samples with concentrated sulfuric acid (SA) at various temperatures and following mechanical or ultrasound disintegration. Unfortunately, conditions of existing me...

2010
Amit Saxena Thomas J. Elder Jeffrey Kenvin Arthur J. Ragauskas

The goal of this work is to produce nanocomposite film with low oxygen permeability by casting an aqueous solution containing xylan, sorbitol and nanocrystalline cellulose. The morphology of the resulting nanocomposite films was examined by scanning electron microscopy and atomic force microscopy which showed that control films containing xylan and sorbitol had a more open structure as compared...

Journal: :تحقیقات مهندسی کشاورزی 0
نسرین جمشیدی کلجاهی دانشجوی کارشناسی ارشد دانشگاه تبریز، دانشکده کشاورزی بابک قنبرزاده دانشیار گروه علوم و صنایع غذایی دانشکده کشاورزی دانشگاه تبریز جلال دهقان نیا دانشیار گروه علوم و صنایع غذایی دانشکده کشاورزی دانشگاه تبریز علی اکبر انتظامی استاد گروه شیمی پلیمر دانشکده شیمی دانشگاه تبریز محمود صوتی خیابانی استادیار گروه علوم و صنایع غذایی دانشکده کشاورزی دانشگاه تبریز

the present study used a constant level of citric acid and polyvinyl alcohol and different amounts of nanocrystalline cellulose (cnc) and tio2 nanoparticles to improve the properties of starch film. the effect of different amounts of glycerol was also examined. the results of differential scanning colorimetry demonstrated that the addition of cnc increased the melting and glass transition tempe...

2016
Zaira Z. Chowdhury Sharifah Bee Abd Hamid Abdul Khalil

This study focuses on the extraction of nanocrystalline cellulose ( NCC) from the dried stalk of Corchorus olitorius, commonly known as jute, using a combination of a microwave-assisted alkaline peroxide pulping process (AHP) and ultrasonication. Dried jute stalk powder was pretreated using sodium hydroxide under microwave irradiation for the removal of lignin. The partially delignified sample ...

Journal: :Jurnal Kedokteran Diponegoro 2022

Background: Nanocrystalline cellulose has potential for biomedical applications due to its abundant material availability, biodegradability, biocompatibility, and low weight. Research on nanocrystalline as medical implants rarely been studied in the past 10 years, although this tremendous such bone cardiovascular implants.
 Objective: This study aims analyze development of research using a...

2013
J. Vincent Edwards Nicolette Prevost Alfred French Monica Concha Anthony DeLucca Qinglin Wu

Nanocrystalline cellulose is an amphiphilic, high surface area material that can be easily functionalized and is biocompatible and eco-friendly. It has been used singularly and in combination with other nanomaterials to optimize biosensor design. The attachment of peptides and proteins to nanocrystalline cellulose and their proven retention of activity provide a route to bioactive conjugates us...

Journal: :Carbohydrate polymers 2014
Yefei Liu Haisong Wang Guang Yu Qingxue Yu Bin Li Xindong Mu

In this work, a sustainable and green process to prepare nanocrystalline cellulose (NCC) from bleached hardwood pulp was demonstrated. Rod-like nanocrystalline cellulose with the size of 15-40 nm in width and hundreds of nanometers in length was obtained through H3PW12O40 (HPW)-catalyzed hydrolysis of bleached pulp fibers under the mild reaction conditions. Thermogravimetric analysis revealed t...

2012
Vitaly Pikulev Svetlana Loginova Valery Gurtov

We have characterized the structure and luminescence properties for two-component material composed of nanocrystalline cellulose and nanocrystalline (less to 100 nm) silicon powder. An efficient and stable photoluminescence of nanocomposite, resistant to the influence of gas-phase oxidants, has been found. The obtained material has electret-like properties and demonstrates the possibility of mu...

Journal: :Science and technology of advanced materials 2011
Suresha K Mahadeva Jaehwan Kim

A highly flexible nanocomposite was developed by coating a regenerated cellulose film with a thin layer of tin oxide (SnO2) by liquid-phase deposition. Tin oxide was crystallized in solution and formed nanocrystal coatings on regenerated cellulose. The nanocrystalline layers did not exfoliate from cellulose. Transmission electron microscopy and energy dispersive x-ray spectroscopy suggest that ...

Journal: :IOP Conference Series: Materials Science and Engineering 2018

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