Crystallization, Morphological, and Mechanical Response of Poly(Lactic Acid)/Lignin-Based Biodegradable Composites. (23rd March 2016)

• Record Type: Journal Article
• Authors: Kumar Singla, Rajendra; Maiti, Saurindra Nath; Ghosh, Anup Kumar
• Is Part Of: Polymer-plastics technology and engineering. Volume 55:Number 5(2016)
• Page Start: 475
• Page End: 485
• Publication Date: 2016-03-23
• Subjects: Lignin -- composites -- mechanical properties -- phase interaction -- poly(lactic acid); Polymers -- Periodicals; Polymerization -- Periodicals; Polymers -- Periodicals; Engineering -- Periodicals; Plastics -- Periodicals; 668.9
• DOI: 10.1080/03602559.2015.1098688
• Languages: English
• ISSNs: 0360-2559

Abstract

ABSTRACT: Green/bio-based composites of poly(lactic acid) and lignin were prepared by melt blending in a twin-screw extruder. Thermal and mechanical properties, phase interaction, and morphology of the composites have been investigated. Fourier transform infrared studies elucidated the existence of intermolecular hydrogen bonding between poly(lactic acid) and lignin. Scanning electron microscopy studies revealed an extent of diffused phase boundaries between poly(lactic acid) and lignin which also indicated significant interaction between them. Tensile properties showed significant increase over neat poly(lactic acid) with lignin loading (0–0.28 volume fraction) which further justified using theoretical models. Izod impact strength decreased with lignin content. GRAPHICAL ABSTRACT: