Swelling agent

In this study, achira (Canna edulis) starch was oxidized by sodium hypochlorite and the effects of different concentration of oxidation agent (1, 2, 3 and 5%) on the physicochemical properties, morphological properties and crystallinity of achira starch (AS) was investigated. The carbonyl and carboxyl content, starch colour parameters, swelling capacity, solubility, IR spectra, SEM and XRD of native and oxidized achira starch (OAS) were evaluated.

7p dianmotminh02 03-05-2024 1 1   Download

Osteomyelitis is a bone inflammation that can be related to various infectious agents. As with any other type of inflammation, the prevailing symptoms and signs may include redness, swelling, pain, and heat. Fungal osteomyelitis is rare and usually found in immune-compromised patients.

8p vitiki 30-01-2024 2 2   Download

Hydrogels based on biopolymers like Gum Arabic (GA) usually show low applicability due to weak mechanical properties. To overcome this issue, (nano)fillers are utilized as reinforcing agents. Here, GA hydrogels were reinforced by chitin nanowhiskers (CtNWs, aspect ratio of 14) isolated from the biopolymer chitin through acid hydrolysis.

12p viginny 30-12-2022 9 2   Download

A new monomer was prepared from (1R,3S)-(+) -camphoric acid. Novel polyimide and polyimide–clay hybrid composites were developed from one-pot condensation reactions of this monomer and pyromellitic dianhyride. Polyimidemontmorillonite nanocomposites were prepared from solution of polyimide and with different weight percentages (1, 5, 10 wt %) of organo-modified montmorillonite (OM-MMT) using N -methyl-2-pyrrolidone (NMP) as aprotic solvent. The reactive organoclay was formed by using hexadecylpyridinium chloride as a swelling agent for silicate layers of montmorillonite.

13p langthannam 29-12-2021 16 0   Download

In this study, we used a new class of fluorinated surfactant as a soft template for the preparation of the hollow silica nanoparticles. The size of the hollow silica nanoparticles was enlarged by incorporating a variety of swelling agents (perfluorodecalin, perfluorotributylamine, perfluorooctane, and perfluorooctyl bromide) into the cores of the micelles of the fluorinated surfactant. However, once we used the perfluorinated acids (perfluorooctadecanoic acid and perfluorodecanoic acid) as swelling agents, the structure of silica nanoparticles is solid without the formation of hollow voids.

5p quenchua12 10-05-2021 10 2   Download

The superabsorbent polymers based on acrylic acid have been prepared in the presence of ammonium persulfate (APS) as initiator and N,N-methylene- bis- acrylamide (MBA) as crosslinking agent. The suspension polymerisation occurred in aqueous drops dispersed in toluene and stabilised by sorbitan monooleate. Some effects on the swelling degree and size particles such as concentrations of MBA and initiator, neutralization degree (Dn) were studied. Swelling degree 405g/g, reach maximum at 85◦C and 0.09% crosslinking agent, 1.

6p 12120609 01-06-2020 11 2   Download

In this study, sago starch was modified in order to enhance its physicochemical properties. Carboxymethylation was used to introduce a carboxymethyl group into a starch compound. The carboxymethyl sago starch (CMSS) was used to prepare smart hydrogel by adding acetic acid into the CMSS powder as the crosslinking agent.

10p vijiraiya2711 27-05-2020 7 1   Download

To explore bio-control options available for management of Siam weed, a survey was conducted during the year 2017-18 and 2018-19 in different districts of Tripura, India. During survey, symptoms of leaf blight were observed on leaves of Siam weed. Fungi isolated from infected sample on PDA media shows slow growth covering whole petri plate within 10 days. During incubation period fungal sporulation increases with increase in growth period. Identification of suspected causal agent was Phytophthora which was confirmed based on the morphology.

5p quenchua2 15-12-2019 10 0   Download

The Correspondence between the old Congress and the American Agents, Commissioners, and Ministers in foreign countries, was secret and confidential during the whole revolution. The letters, as they arrived, were read in Congress, and referred to the standing Committee of Foreign Affairs, accompanied with requisite instructions, when necessary, as to the nature and substance of the replies.

253p nhokheo9 03-05-2013 51 3   Download

Mumps is an acute, systemic, communicable viral infection whose most distinctive feature is swelling of one or both parotid glands. Involvement of other salivary glands, the meninges, the pancreas, and the gonads also is common. Etiologic Agent Mumps virus, a paramyxovirus, is pleomorphic and has a diameter ranging from 100 to 300 nm. The virion is composed of RNA and seven proteins. The RNA is surrounded by an envelope composed of glycoproteins, including a hemagglutinin-neuraminidase (HN), a hemolysis cell fusion antigen (F), and a matrix envelope protein (M).

6p crazy_sms 09-05-2012 49 4   Download