Flame retardant effect of lignin/carbon nanotubes/potassium carbonate composite coatings on cotton roving

Damian Lukawski , Wojciech Grześkowiak , Agnieszka Łękawa-Raus , Małgorzata Widelicka , Filip Lisiecki , Alina Dudkowiak

Abstract

A new composite flame retardant coating for cotton roving has been investigated. The proposed coating comprises natural lignin, pure carbon allotrope carbon nanotubes (CNTs) and non-toxic potassium carbonate (K2CO3). The series of complementary experiments, including thermogravimetric analysis, vertical burning in fire tube, limiting oxygen index (LOI) measurement and combustion in mass loss calorimeter enabled the formulation of an optimum composition including aqueous suspension with 1 wt% of CNTs, 1 wt% lignin (L) as well as 1 wt% of K2CO3. Applying L/CNT/K2CO3 on cotton roving increased LOI from 17.1 to 38.5%, decreased final mass loss and temperature during vertical burning from 100 to 78% and 457 to 190 °C, respectively. Moreover, peak heat release rate and total heat released dropped from 97.5 to 70.4 kW/m2 and from 4.2 to 1.6 MJ/m2, respectively. The above experiments supported by scanning electron microscopy and Raman spectroscopy allowed also the explanation of the complementary mechanisms responsible for the overall fire retardant effect.

Author Damian Lukawski - [Politechnika Poznańska (PP)]
Damian Lukawski,,
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- Politechnika Poznańska
, Wojciech Grześkowiak - [Uniwersytet Przyrodniczy w Poznaniu]
Wojciech Grześkowiak,,
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, Agnieszka Łękawa-Raus (FM / IMBE)
Agnieszka Łękawa-Raus,,
- The Institute of Metrology and Biomedical Engineering
, Małgorzata Widelicka - [Institute of Molecular Physics of the Polish Academy of Sciences]
Małgorzata Widelicka,,
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, Filip Lisiecki - [Institute of Molecular Physics of the Polish Academy of Sciences]
Filip Lisiecki,,
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, Alina Dudkowiak - [Politechnika Poznanska]
Alina Dudkowiak,,
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Journal seriesCellulose, ISSN 0969-0239, e-ISSN 1572-882X
Issue year2020
ASJC Classification2507 Polymers and Plastics
DOIDOI:10.1007/s10570-020-03270-y
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); after publication
File
Flame_Retardant_Effect.pdf 0 B
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 02-09-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.237; WoS Impact Factor: 2018 = 3.917 (2) - 2018=4.379 (5)
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