REAL

Structure, Properties and Interactions in Ionomer/Lignin blends

Szabó, Gábor and Kun, Dávid and Renner, Károly and Pukánszky, Béla (2018) Structure, Properties and Interactions in Ionomer/Lignin blends. Materials & Design, 152. pp. 129-139. ISSN 0264-1275

[img]
Preview
Text
Szabó_REAL_2018_Mater_Des.pdf - Accepted Version

Download (957kB) | Preview

Abstract

Blends were prepared from lignin and ionomers, i.e. ethylene-methacrylic acid copolymers partially neutralized with inorganic salts, to check the possible effect of ionic bonds on the structure and properties of the blends. Two lignosulfonates were used as the lignin component, and a low density polyethylene as well as an ethylene-acrylic acid copolymer without any neutralization as references. The lignin content of the blends varied between 0 and 60 vol%. The components were homogenized in an internal mixer and the blends were characterized by various methods including dynamic mechanical analysis, differential scanning calorimetry and tensile testing. The size of dispersed lignin particles was determined from scanning electron micrographs by image analysis. Component interactions were estimated quantitatively by two different methods. All the studied properties of ionomer/lignin blends indicated the development of strong interactions between the components. The simultaneous action of hydrogen bonds of non-neutralized methacrylic acid moieties and ionic bonds resulted in the formation of small, dispersed lignin particles of the size of several tenth of a micron. Hydrogen bridges seem to improve interactions and compatibility somewhat more than ionic bonds. Ionomer/lignin blends with a reasonable combination of properties can be produced at moderate lignin contents.

Item Type: Article
Subjects: Q Science / természettudomány > QD Chemistry / kémia
Q Science / természettudomány > QD Chemistry / kémia > QD02 Physical chemistry / fizikai kémia
Depositing User: Dr. János/J Móczó
Date Deposited: 07 Sep 2018 10:18
Last Modified: 15 Aug 2020 23:15
URI: http://real.mtak.hu/id/eprint/83219

Actions (login required)

Edit Item Edit Item