The functional and tableting properties of native (NaFM) and chemically modified (by acetylation, AcFM; and oxidation, OxFM) finger millet starches were investigated. The tablet formation properties of the starches were assessed by Heckel and Kawakita analysis. The swelling power and solubility of the starch increased with increase in temperature with AcFM having the highest swelling power, while OxFM had the highest solubility. X-ray diffractometry showed that the starches had the characteristic 'A' pattern with strong peaks at 3.78, 4.37, 4.87, and 5.17 Å . Chemical modification causes rupture of some starch granules as revealed by the Scanning Electron Micrograph. Chemical modification also leads to improved gelatinisation profile, with reduction in DH gel from 9.64 J/g (NaFM) to 3.88 J/g (AcFM) and 8.76 J/g (OxFM). The bulk density and Hausner's ratio increased after chemical modification of the starch. Chemical modification reduced the mean yield pressure, P y (Heckel analysis) but increased the deformability P k (Kawakita analysis) of the starch compacts. Chemical modification also increased the crushing and tensile strength of the starch compacts, but lowered its disintegration time and friability.
Oil from the Plukenetia conophora seed, a tropical oilseed consisting mainly of linolenic acid, is polymerized via acyclic triene metathesis using different ruthenium benzylidene and indenylidene catalysts to yield highly branched and functionalized polyesters. The influence of the synthesis conditions on the structure and molar mass characteristics of the obtained hyperbranched polyesters as well as an in‐depth melt and solution material property investigation are presented.
Albizia benth oil (ABO) has been employed in the preparation of polyesteramide resin via the condensation of hydroxyethylamide derivatives of ABO fatty acids and phthalic anhydride. The maleinised Albizia benth oil polyesteramide was prepared, using maleinised hydroxyethylamide derivatives of ABO obtained by appending maleate half esters onto the hydroxyethylamide derivative of ABO and phthalic anhydride. Structural elucidation and characterisation of the products carried out revealed that maleic anhydride can successfully be used to modify polyesteramides, to improve its properties such as drying, flexibility, scratch hardness, impact resistance, chemical resistance, and lower curing temperature.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.