Author, Institution: Most Setara Begum, Kaunas University of Technology
Science area, field of science: Technological Sciences, Materials Engineering, T008
Research supervisor: Prof. Dr. Rimvydas Milašius (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dissertation Defence Board of Materials Engineering Science Field:
Prof. Dr. Daiva Mikučionienė (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008) – chairperson
Assoc. Prof. Dr. Kristina Ancutienė (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dr. Julija Baltušnikaitė-Guzaitienė (State Research Institute Center for Physical Sciences and Technology, Technological Sciences, Materials Engineering, T008)
Prof. Dr. Pablo Diaz Garcia (The Polytechnic University of Valencia, Spain, Technological Sciences, Materials Engineering, T008)
Prof. Dr. Jolita Ostrauskaitė (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dissertation defence meeting will be at Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73-402, Kaunas)
The doctoral dissertation is available at the library of Kaunas University of Technology (Gedimino 50, Kaunas) and on the internet: M. S. Begum_el.dissertation.pdf
© M. S. Begum, 2025 “The text of the thesis may not be copied, distributed, published, made public, including by making it publicly available on computer networks (Internet), reproduced in any form or by any means, including, but not limited to, electronic, mechanical or other means. Pursuant to Article 25(1) of the Law on Copyright and Related Rights of the Republic of Lithuania, a person with a disability who has difficulties in reading a document of a thesis published on the Internet, and insofar as this is justified by a particular disability, shall request that the document be made available in an alternative form by e-mail to doktorantura@ktu.lt.”
Annotation: This dissertation investigates jute, the second most abundant ligno-cellulosic fiber, for flame-retardancy using Pyrovatex CP New. Treated jute and jute-cotton fabrics showed zero flame-spread, improved char, and over 50% residual mass. SEM, FTIR, and TGA confirmed chemical deposition. Despite enhanced flame resistance, mechanical strength declined, while formaldehyde remained within acceptable outerwear limits. The second part of this dissertation explores the flame-retardant (FR) performance of seven woven jute fabrics treated with ITOFLAM CPN and KNITTEX CHN using the pad-dry-cure method. Flammability tests showed zero flame-spread and after-glow times, while LOI values reached 43.33 in Twill and Irregular Satin. TGA, SEM-EDS, and FTIR confirmed premature degradation, char formation, and chemical deposition with residual mass above 50%. Despite enhanced FR properties, tensile strength fell sharply, with 77% loss in Plain weave. Formaldehyde exceeded safety limits, while wash durability was moderate. The final part of this dissertation explores phytic acid (PA) with BTCA and SHP on three jute weaves. Untreated fabrics burned completely, while PA-treated samples self-extinguished with shorter char lengths and higher LOI values (29.5–32%). Treated fabrics showed improved thermal stability, higher residual mass (47%), reduced PHRR and heat release, and superior abrasion resistance. Wash durability remained effective, with moderate mass losses after 15 washes. SEM-EDS confirmed phosphorus deposition, enhancing char formation. Formaldehyde levels (13 ppm) complied with Oeko-Tex standards, highlighting the potential of PA for eco-friendly flame-retardant jute applications.