1 edition of Amines grafted cellulose materials found in the catalog.
Amines grafted cellulose materials
Includes bibliographical references (p. -62) and index.
|Series||Materials science and technologies, Novinka, Materials science and technologies series, Novinka (Series)|
|LC Classifications||QD323 .F65 2010|
|The Physical Object|
|Pagination||viii, 68 p. :|
|Number of Pages||68|
|LC Control Number||2010484106|
Typically, polymer-cellulose composites are synthesized by a grafting-from method because it can be difficult to obtain sufficient graft density using a grafting-to preparation. However, the composites reported here comprised 60−64% grafted polymer by mass. Grafting of Cellulose Based Materials: A Revi ew Biranchinarayan Tosh* 1 and Chitta Ranjan Routray 2 1 Department of Chemistry, Orissa Engineering College, Bhub aneswar – , Odisha, India.
A wide variety of other plant materials such as jute, ramie, sisal, flax, hemp, etc are also well known sources for cellulose production.6 Other cellulose-producing plants include water plants, grasses, and some parts of plants such as leaves, stem, fruit, etc. Agricultural wastes such as wheat and rice straw, sugarcane bagasse, sawdust, cotton. As one of the main consumables of interior decoration and furniture, decorative paper can be seen everywhere in the indoor space. However, because of its high content of formaldehyde, it has a certain threat to people’s health. Therefore, it is necessary to develop and study new formaldehyde-free decorative paper to meet the market demand. In this work, we have obtained formaldehyde-free.
Cellulose and cyclodextrins possess unique properties that can be tailored, combined, and used in a considerable number of applications, including textiles, coatings, sensors, and drug delivery systems. Successfully structuring and applying cellulose and cyclodextrins conjugates requires a deep understanding of the relation between structural, and soft matter behavior, materials, energy, and. A ‘grafting from’ approach was used to graft poly(ε-caprolactone) (PCL) polymers to cellulose nanocrystals by Sn(Oct) 2-catalyzed ring-opening polymerization (ROP). The grafting efficiency was evidenced by the long-term stability of suspension of PCL-grafted cellulose nanocrystals in observations were confirmed by Fourier Transform Infrared Spectroscopy (FT-IR) and .
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: Amines Grafted Cellulose Materials (Materials Science and Technologies) (): Follain, Nadege: BooksAuthor: Nadege Follain. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.
Amines grafted cellulose materials. [Nadege Follain] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Electronic books: Additional Physical Format: Print version: (DLC) Material Type: Document, Internet resource: Document Type.
Preparation of aminoalkyl‐grafted bacterial cellulose membranes with improved antimicrobial properties for biomedical applications. Wei He. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China. Search for more papers by this author. Zhaoyu by: 1.
Pillai () grafted cardanol onto cellulose filter paper using a boron trifluor ide diethyl ether complex (BF3 OEt2) as the cationic initiator.
The approximate grafting yield was 15 25%, and the. A new type of nanofibrous amine-containing adsorbent was prepared for CO 2 adsorption by electrospinning of syndiotactic polypropylene (s-PP) followed by radiation induced grafting of glycidyl methacrylate and subsequent amination with ethanolamine.
The obtained adsorbents were tested for CO 2 adsorption with a mixture of CO 2 /N 2 having 5–15% CO 2 using a fixed bed adsorption column at. Cellulose Functionalysed with Grafted Oligopeptides. By Justyna Fraczyk, Beata Kolesinska, Inga Relich and Zbigniew J.
Kaminski. Submitted: November 24th Reviewed: August 13th Published: August 29th DOI: / The aim of this study was to graft the amine functions on the surface of cellulose acetate (CA) fibers by two kind of plasma processing; namely, inductively coupled plasma (ICP) and radiofrequency plasma, using either NH 3 /He or mixture of N 2 /H 2 gases.
Optical emission spectroscopy was used to examine the various chemical species of the N 2 /H 2 ICP system. Importantly, CNC-PAH grafted with the higher M w (∼50 kg mol −1) PAH exhibited a rapid Cr(VI) adsorption rate and remarkably high Cr(VI) adsorption capacity (∼ mg g-1 at K), exceeding those of previously reported adsorbents owing to its numerous Cr(VI)-adsorptive amine groups provided by the closely-packed grafted PAH polymers.
Cellulose nanofibers (CNFs) were surface-modified with polyethyleneimine (PEI), which brought plentiful amine groups on the surface of CNFs, leading to a reduced hydrogen bond density between CNFs and consequently less CNFs agglomerates.
The amine groups could also react with the epoxy as an effective curing agent that could increase the interfacial crosslinking density and strengthen. In this review, homogeneous and heterogeneous grafting from cellulose and cellulose derivatives by ring-opening polymerisation (ROP) are reported.
Cellulose is biorenewable and biodegradable as well as a stiff material with a relatively low specific weight, foreseen to be an excellent replacement for synthetic materials. Nanocellulose-Cellulose Derivatives Grafting. The cellulose derivatives have been used to functionalize the surface properties of nanocellulose, because of their natural affinity toward nanocellulose (István and David,Zelin et al., ).
Different approaches utilizing carboxymethyl cellulose for the surface grafting of. Cellulose-based Materials for the Removal of Heavy Metals from Wastewater – An Overview such as amines and carboxylic acid. Bagasse can be site hydrogel using cellulose-graft.
The present work explores the possibility of chemically modifying carboxymethyl cellulose (CMC), a widely diffused commercial cellulose ether, by grafting of hydrophobic moieties. Amidation of CMC, at high temperature and in heterogeneous conditions, was selected as synthetic tool for grafting on CMC a panel of commercially available amines (bearing long aliphatic chains, alkyl aromatic and.
This was because the condensation reaction reached saturation. After the full hydrolysis of AEAPMDS and the completed reaction of CNC, the continuous increase of the reaction time will lead to the reverse reaction, which will damage the amino bond grafted to the surface of cellulose and affect the graft rate of amine-modified CNC.
This study demonstrates regioselective oxidation of cellulose nanowhiskers using – mmols of sodium periodate per 5 g of whiskers followed by grafting with methyl and butyl amines through a Schiff base reaction to obtain their amine derivatives in 80–90 % yield.
We found a corresponding increase in carbonyl content (– mmols/g) of the dialdehyde cellulose. Smart materials that can undergo changes in color upon the detection of amines have the potential to provide information on the freshness of fish and meat.
To engineer a material that undergoes a change in color upon exposure to biogenic amines, succinic anhydride functional groups –.
Cellulose graft copolymers can be obtained either in homogeneous or heterogeneous media. Most widely used methods for graft confirmation are FT-IR, NMR, TGA, SEM, TEM, XRD, and XRF.
Monomer grafted on cellulose can give a hydrophilic or hydrophobic character to the new copolymer, which can pave the way to various applications. Introduction. Cellulose is the most abundant renewable organic material produced in the biosphere, with approximately 5 × 10 11 metric tons being generated yearly.
Unfortunately, a mere 2% is recovered industrially .Cellulose is a linear syndiotactic homopolymer composed of D-anhydroglucopyranose units (AGUs), which are linked by β-(1→4)-glycosidic bonds (Figure 1). Grafting of vinyl monomers onto cellulose is an important tool for the modification of cellulose.
Depending on the monomer grafted onto cellulose, it gains new properties. The grafting can be performed in heterogeneous or homogeneous medium.
A cellulose-based anion exchanger (Cell-AE) bearing the —N+HR2Cl− functional group was prepared through graft copolymerization of glycidyl methacrylate onto cellulose (Cell) in the presence of N,N′-methylenebisacrylamide as a cross-linker using benzoyl peroxide as the initiator, followed by amination and hydrochloric acid treatment.
The adsorbent was characterized by infrared.We show that functionalization of the surface of cellulose nanocrystals (CNCs) with either carboxylic acid (CNC–CO2H) or amine (CNC–NH2) moieties renders the CNCs pH-responsive.
At low pH, where the amine groups are protonated, CNC–NH2 forms aqueous dispersions in water on account of electrostatic repulsions of the ammonium moieties inhibiting aggregation.Reversible addition−fragmentation chain transfer (RAFT) polymerization was used to control the grafting of styrene from a cellulose substrate.
The hydroxyl groups of the cellulose fiber were converted into thiocarbonyl-thio chain transfer agent, and were further used to mediate the RAFT polymerization of styrene. The graft copolymers were analyzed by gravimetry, attenuated total reflectance.