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Cellulose

, Volume 25, Issue 1, pp 787–797 | Cite as

A reactive flame retardant ammonium salt of diethylenetriaminepenta(methylene-phosphonic acid) for enhancing flame retardancy of cotton fabrics

  • Dandan Zheng
  • Jianfeng Zhou
  • Yao Wang
  • Fengxiu Zhang
  • Guangxian Zhang
Original Paper

Abstract

In this study, a novel flame retardant (FR) for cotton fabrics was synthesized, namely, ammonium salt of diethylenetriaminepenta(methylene-phosphonic acid) (ADTPMPA), using diethylenetriaminepenta(methylene-phosphonic acid) (DTPMPA) and urea, and its structure was comfirmed by 1H NMR, 13C NMR and 31P NMR. The ADTPMPA reacted with the –OH groups of cellulose macro molecules to form P–O–C covalent bonds. LOIs of cotton fabrics finished with 70 and 90 g/L ADTPMPA reached to 40.0 and 41.5% respectively; after 40 laundering cycles, their LOIs were 26.5 and 26.7% respectively. The treated cotton fabrics still kept soft. FTIR spectroscopy confirmed –P–O–C bonds between ADTPMPA and cellulose, and X-ray diffraction revealed the formation of cellulose II structures in the finishing process. SEM suggested that ADTPMPA molecule permeates the inner space of the cotton fibers. TG result indicated that the treated cotton fibers retain more residue than the original fibers. Cone calorimetry test result showed that the treated cotton fabric had lower PHRR and THR than that of original cotton fabric. The results suggested that the ADTPMPA treated cotton fabrics had condense phase flame retardant mechanism.

Keywords

Flame retardant Cotton ADTPMPA LOI Durability 

Notes

Acknowledgments

This work was supported by the Fundamental Research Funds for the Central Universities (Grant No. XDJK2013A021) and Innovation Project of Southwest University (Grant No. 100030-2120130626).

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  • Dandan Zheng
    • 1
    • 2
  • Jianfeng Zhou
    • 1
    • 2
  • Yao Wang
    • 1
    • 2
  • Fengxiu Zhang
    • 3
  • Guangxian Zhang
    • 1
    • 2
  1. 1.College of Textile and GarmentSouthwest UniversityChongqingPeople’s Republic of China
  2. 2.Chongqing Engineering Research Center of Biomaterial Fiber and Modern TextileChongqingPeople’s Republic of China
  3. 3.Institute of Bioorganic and Medicinal Chemistry, College of Chemistry and Chemical EngineeringSouthwest UniversityChongqingPeople’s Republic of China

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