Journal of Textile Science and Technology

Journal of Textile Science and Technology

Improvement of the Thermal Resistance of Viscose Modified with Poly (amidoamine) Dendrimer

Document Type : Research/ Original/ Regular Article

Authors
Samera Salimpour Abkenar 1
Reza Mohammad Ali Malek 2
Raheleh Hashemina 3
1 Traditional Arts Research Center- Research Institute of Cultural, Heritage, and Tourism
2 Textile Engineering. Amirkabir University of Technology. Tehran. Iran
3 Textile Engineering- Amirkabir University of Technology- Tehran-Iran
10.22034/jtst.2025.511604.1491
Abstract
Due to the flammable nature of cellulosic textiles and the irreparable damage they cause, it is essential to improve their thermal resistance further. The application of nitrogen-containing compounds is one of the well-known methods to enhance the heat resistance of cellulosic products. Accordingly, in this study, a nanostructure containing multiple nitrogen groups called polyamidoamine dendrimer (PAMAM-NH2) with citric acid (CA) has been used to increase the thermal resistance of viscose cellulose products. Results of FTIR and ATR-FTIR confirm ester (-COO-) and amide (-CONH-) bonds formed between the functional groups of viscose, citric acid, and the dendrimers. Also, SEM images and EDS analysis show the presence of dendrimers on the modified viscose. Thermal stability and flame retardancy of the modified viscose were confirmed by well-known thermal analyses, TGA, DSC, LOI, and flammability test (in vertical configuration). The results show that the limiting oxygen index (LOI) of raw viscose has increased from 18.2% to 23.5% and 25.1% for viscose modified with G2- and G4-generation PAMAM dendrimers, respectively. In addition, TGA results indicate the final residual amount of raw viscose has enhanced from 0.4% to 27.3% (Viscose-CA-G2-PAMAM) and 29.4% (Viscose-CA-G4-PAMAM), which leads to faster thermal choking. In addition, the results of physical property evaluation show that the wrinkling resistance (WRA), yellowness index (YI), breaking strength (BS), and bending length (BL) of the modified viscose increased compared to the control sample; in contrast, the whiteness index (WI) and moisture decreased.
Keywords
Dendrimer Nanostructure
Poly (amidoamine)
Thermal resistance
Viscose
Surface modification

Subjects

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  • Receive Date 10 March 2025
  • Revise Date 26 May 2025
  • Accept Date 27 May 2025