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Eco-friendly flame retardant coating deposited on cotton fabrics from bio-based chitosan, phytic acid and divalent metal ions.
Int J Biol Macromol. 2019 Nov 01; 140:303-310.IJ

Abstract

With the increasing awareness of environmental protection, the greening of flame retardants has become an inevitable choice for flame retardant technology. Bio-based materials have the advantages of wide source, recyclability and green environmental protection, and have received extensive attention. In this work, chitosan and phytic acid as intumescent flame retardant system and metal ion as a synergist were built on cotton fabrics to achieve efficient flame retardancy by facile dip-pad-dry process. Microscale combustion calorimetry results manifested that the heat release rate values of coated samples were lower than that of uncoated samples. The peak heat release rate and total heat release of uncoated samples were 333.1 W/g and 13.1 kJ/g, while these values of samples coated CH/PA/Ba/PA were 129.1 W/g and 5.4 kJ/g respectively and char residues also were increased sharply owing to the phosphate groups promote the formation of char layer covering the surface of the cotton fabrics, which can prevent heat transfer. Scanning electron microscopy confirmed that there were much more bubbles on the surface of fibers for the coated CH/PA/Ba/PA after horizontal flame tests. The results indicated that the synergy of the intumescent flame retardant system was achieved by the addition of metal ions which could accelerate the produce of a large number of nonflammable gases. Horizontal flame test and limit oxygen index (LOI) test showed that the burning rate and LOI values of samples coated CH/PA/Ba/PA, CH/PA /CH/PA, PA/Ba/PA/Ba were 1.5 mm/s and 22.0, 2.0 mm/s and 20.2 and 2.5 mm/s and 18.0 respectively, compared to 3.3 mm/s and 16.2 of uncoated samples. The samples with intumescent flame retardant system and metal ions (CH/PA/Ba/PA) had best flame retardant performance. Moreover its weight gain (5.2%) was less than that (10.7%) of the sample only with intumescent flame retardant system (CH/PA /CH/PA). The less weight gain had less effect on the softness of cotton fabrics. As a result, the coating is expected to be applied in practice.

Authors+Show Affiliations

Department of Material Science, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, China.Department of Material Science, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, China.Department of Material Science, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, China.Department of Material Science, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, China. Electronic address: wyh@lzu.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31415853

Citation

Zhang, Zhihao, et al. "Eco-friendly Flame Retardant Coating Deposited On Cotton Fabrics From Bio-based Chitosan, Phytic Acid and Divalent Metal Ions." International Journal of Biological Macromolecules, vol. 140, 2019, pp. 303-310.
Zhang Z, Ma Z, Leng Q, et al. Eco-friendly flame retardant coating deposited on cotton fabrics from bio-based chitosan, phytic acid and divalent metal ions. Int J Biol Macromol. 2019;140:303-310.
Zhang, Z., Ma, Z., Leng, Q., & Wang, Y. (2019). Eco-friendly flame retardant coating deposited on cotton fabrics from bio-based chitosan, phytic acid and divalent metal ions. International Journal of Biological Macromolecules, 140, 303-310. https://doi.org/10.1016/j.ijbiomac.2019.08.049
Zhang Z, et al. Eco-friendly Flame Retardant Coating Deposited On Cotton Fabrics From Bio-based Chitosan, Phytic Acid and Divalent Metal Ions. Int J Biol Macromol. 2019 Nov 1;140:303-310. PubMed PMID: 31415853.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Eco-friendly flame retardant coating deposited on cotton fabrics from bio-based chitosan, phytic acid and divalent metal ions. AU - Zhang,Zhihao, AU - Ma,Zhongying, AU - Leng,Qian, AU - Wang,Yuhua, Y1 - 2019/08/12/ PY - 2019/05/02/received PY - 2019/07/19/revised PY - 2019/08/06/accepted PY - 2019/8/16/pubmed PY - 2019/8/16/medline PY - 2019/8/16/entrez KW - Bio-based flame retardant KW - Chitosan KW - Coating KW - Cotton fabrics KW - Metal ion KW - Phytic acid SP - 303 EP - 310 JF - International journal of biological macromolecules JO - Int. J. Biol. Macromol. VL - 140 N2 - With the increasing awareness of environmental protection, the greening of flame retardants has become an inevitable choice for flame retardant technology. Bio-based materials have the advantages of wide source, recyclability and green environmental protection, and have received extensive attention. In this work, chitosan and phytic acid as intumescent flame retardant system and metal ion as a synergist were built on cotton fabrics to achieve efficient flame retardancy by facile dip-pad-dry process. Microscale combustion calorimetry results manifested that the heat release rate values of coated samples were lower than that of uncoated samples. The peak heat release rate and total heat release of uncoated samples were 333.1 W/g and 13.1 kJ/g, while these values of samples coated CH/PA/Ba/PA were 129.1 W/g and 5.4 kJ/g respectively and char residues also were increased sharply owing to the phosphate groups promote the formation of char layer covering the surface of the cotton fabrics, which can prevent heat transfer. Scanning electron microscopy confirmed that there were much more bubbles on the surface of fibers for the coated CH/PA/Ba/PA after horizontal flame tests. The results indicated that the synergy of the intumescent flame retardant system was achieved by the addition of metal ions which could accelerate the produce of a large number of nonflammable gases. Horizontal flame test and limit oxygen index (LOI) test showed that the burning rate and LOI values of samples coated CH/PA/Ba/PA, CH/PA /CH/PA, PA/Ba/PA/Ba were 1.5 mm/s and 22.0, 2.0 mm/s and 20.2 and 2.5 mm/s and 18.0 respectively, compared to 3.3 mm/s and 16.2 of uncoated samples. The samples with intumescent flame retardant system and metal ions (CH/PA/Ba/PA) had best flame retardant performance. Moreover its weight gain (5.2%) was less than that (10.7%) of the sample only with intumescent flame retardant system (CH/PA /CH/PA). The less weight gain had less effect on the softness of cotton fabrics. As a result, the coating is expected to be applied in practice. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/31415853/Eco_friendly_flame_retardant_coating_deposited_on_cotton_fabrics_from_bio_based_chitosan_phytic_acid_and_divalent_metal_ions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0141-8130(19)33223-4 DB - PRIME DP - Unbound Medicine ER -