Acta Chimica Slovaca (ACS) publishes papers on fundamental and applied aspects of chemistry, biochemistry, chemical technology, chemical engineering and process control, biotechnology and food technology. Welcome are also topics which include chemical aspects of materials, physical chemistry and chemical physics, analytical chemistry, macromolecular chemistry and biomedical engineering.

Colour masterbatches and their use in polylactic acid fibres dyeing

Agáta Hudecová *, Marcela Hricová, Mária Petková, Roderik Plavec, Zita Tomčíková a, Anna Ujhelyiová

Department of Plastics, Rubber and Fibres, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia
a Research Institute for Man-Made Fibres a.s., Štúrova 2, 05921 Svit, Slovakia

E-mail: * agata.hudecova@stuba.sk

Abstract: This article is focused on the preparation of colour masterbatches from renewable sources based on polylactic acid, which were modified with inorganic pigments. Titanium dioxide, carbon black, and iron oxides were used as inorganic pigments. Due to the composition of the prepared colour PLA masterbatches, the influence of the inorganic pigment on the rheological and thermal properties was monitored. Rheological properties were determined using a capillary viscosimeter and a rotary rheoviscosimeter with a geometry plate/plate. The colour PLA masterbatches prepared in this way were subsequently used to dye polylactic acid fibres in the mass. The prepared fibres were drawn to the maximum drawn ratio λmax. In case of fibres, the influence of composition and drawn ratio on thermal and mechanical properties was monitored.

Keywords: biodegradable polymers, inorganic pigment, mechanical properties, polylactic acid, rheological properties, thermal properties

Acta Chimica Slovaca, Vol. 16, No. 1, 2023, pp. 62—72, DOI: 10.2478/acs-2023-0006