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Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton.
Polymers (Basel). 2019 Nov 19; 11(11)P

Abstract

The polyamidoamine derived from N,N'-methylenebisacrylamide (M) and glycine (G), M-G, has been shown to be an effective flame-retardant (FR) for cotton in horizontal flame spread tests (HFST), extinguishing the flame at 5% add-on. Its activity was attributed to its intrinsic intumescence. In vertical flame spread tests (VFST), M-G failed to extinguish the flame even at 30% add-on. Conversely, in VFST, the polyamidoamine derived from M and cystine (C), M-C, inhibited cotton combustion at 16% add-on, but in HFST failed to extinguish the flame below 12% add-on. Its activity was ascribed to the release of sulfur-containing volatiles acting as radical scavengers. In this work, the FR effectiveness of M-Gm-Cn copolymers with different G/C ratio was compared with that of the M-G and M-C homopolymers and of M-G/M-C blends of the same compositions. In HFST, both copolymers and blends extinguished the flame. In particular, M-G50-C50 and (M-G/M-C)50/50 extinguished the flame, even at 7% add-on. In VFST, the copolymers with ≥50% M-C units, similar to M-C, inhibited cotton combustion at 16% add-on. At the same add-on, the M-G/M-C blends failed to extinguish the flame. It may be concluded that, in contrast to blends, copolymers combined the merits of both homopolymers in all tests.

Authors+Show Affiliations

Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria campus, viale T. Michel, 15121 Alessandria, Italy.Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31752336

Citation

Beduini, Alessandro, et al. "Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton." Polymers, vol. 11, no. 11, 2019.
Beduini A, Carosio F, Ferruti P, et al. Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton. Polymers (Basel). 2019;11(11).
Beduini, A., Carosio, F., Ferruti, P., Ranucci, E., & Alongi, J. (2019). Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton. Polymers, 11(11). https://doi.org/10.3390/polym11111904
Beduini A, et al. Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton. Polymers (Basel). 2019 Nov 19;11(11) PubMed PMID: 31752336.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sulfur-Based Copolymeric Polyamidoamines as Efficient Flame-Retardants for Cotton. AU - Beduini,Alessandro, AU - Carosio,Federico, AU - Ferruti,Paolo, AU - Ranucci,Elisabetta, AU - Alongi,Jenny, Y1 - 2019/11/19/ PY - 2019/10/18/received PY - 2019/11/12/revised PY - 2019/11/17/accepted PY - 2019/11/23/entrez PY - 2019/11/23/pubmed PY - 2019/11/23/medline KW - cotton KW - cystine KW - flame-retardants KW - functional coatings KW - sulfur-based polyamidoamine copolymers JF - Polymers JO - Polymers (Basel) VL - 11 IS - 11 N2 - The polyamidoamine derived from N,N'-methylenebisacrylamide (M) and glycine (G), M-G, has been shown to be an effective flame-retardant (FR) for cotton in horizontal flame spread tests (HFST), extinguishing the flame at 5% add-on. Its activity was attributed to its intrinsic intumescence. In vertical flame spread tests (VFST), M-G failed to extinguish the flame even at 30% add-on. Conversely, in VFST, the polyamidoamine derived from M and cystine (C), M-C, inhibited cotton combustion at 16% add-on, but in HFST failed to extinguish the flame below 12% add-on. Its activity was ascribed to the release of sulfur-containing volatiles acting as radical scavengers. In this work, the FR effectiveness of M-Gm-Cn copolymers with different G/C ratio was compared with that of the M-G and M-C homopolymers and of M-G/M-C blends of the same compositions. In HFST, both copolymers and blends extinguished the flame. In particular, M-G50-C50 and (M-G/M-C)50/50 extinguished the flame, even at 7% add-on. In VFST, the copolymers with ≥50% M-C units, similar to M-C, inhibited cotton combustion at 16% add-on. At the same add-on, the M-G/M-C blends failed to extinguish the flame. It may be concluded that, in contrast to blends, copolymers combined the merits of both homopolymers in all tests. SN - 2073-4360 UR - https://www.unboundmedicine.com/medline/citation/31752336/Sulfur-Based_Copolymeric_Polyamidoamines_as_Efficient_Flame-Retardants_for_Cotton L2 - https://www.mdpi.com/resolver?pii=polym11111904 DB - PRIME DP - Unbound Medicine ER -
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