Modification of poly(styrene-block-butadiene-block-styrene) [SBS] with phosphorus containing fire retardants

Sergey Chernyy, Saif Ullah, Grunde Jomaas, Rolff Ripke Leisted, Pierrick Anthony Mindykowski, Jens Bomholdt Ravnsbæk, Sie Woldum Tordrup, Kristoffer Almdal

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Abstract

An elaborate survey of the chemical modification methods for endowing highly flammable SBS with increased fire resistant properties by means of chemical modification of the polymer backbone with phosphorus containing fire retardant species is presented. Optimal conditions for free radical addition of the Psingle bondH containing fire retardants to a double bonds of poly(butadiene) block of SBS were found, affording varied degree of the modification (0.2–21 mol%). Alternatively, a two-step procedure based on an epoxidation step followed by hydrolysis of the epoxides with phosphoric acid was developed resulting in 20 mol% of poly(butadiene) block modification. Based on TGA results, organophosporus-modified SBS was found to be amenable to charring – a property which correlated directly with the reduced flammability of the modified polymer observed in Cone Calorimetry tests. Furthermore, conceptually novel application of the H3PO4 modified SBS as a fire retardant additive for bitumen material, in combination with synergetic melamine species, offered 25% better self-extinguishing properties of such formulation already at a low loading level of the fire retardant components (3.5 wt.%).
Original languageEnglish
JournalEuropean Polymer Journal
Volume70
Pages (from-to)136-146
ISSN0014-3057
DOIs
Publication statusPublished - 2015

Cite this

Chernyy, Sergey ; Ullah, Saif ; Jomaas, Grunde ; Leisted, Rolff Ripke ; Mindykowski, Pierrick Anthony ; Ravnsbæk, Jens Bomholdt ; Tordrup, Sie Woldum ; Almdal, Kristoffer. / Modification of poly(styrene-block-butadiene-block-styrene) [SBS] with phosphorus containing fire retardants. In: European Polymer Journal. 2015 ; Vol. 70. pp. 136-146.
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title = "Modification of poly(styrene-block-butadiene-block-styrene) [SBS] with phosphorus containing fire retardants",
abstract = "An elaborate survey of the chemical modification methods for endowing highly flammable SBS with increased fire resistant properties by means of chemical modification of the polymer backbone with phosphorus containing fire retardant species is presented. Optimal conditions for free radical addition of the Psingle bondH containing fire retardants to a double bonds of poly(butadiene) block of SBS were found, affording varied degree of the modification (0.2–21 mol{\%}). Alternatively, a two-step procedure based on an epoxidation step followed by hydrolysis of the epoxides with phosphoric acid was developed resulting in 20 mol{\%} of poly(butadiene) block modification. Based on TGA results, organophosporus-modified SBS was found to be amenable to charring – a property which correlated directly with the reduced flammability of the modified polymer observed in Cone Calorimetry tests. Furthermore, conceptually novel application of the H3PO4 modified SBS as a fire retardant additive for bitumen material, in combination with synergetic melamine species, offered 25{\%} better self-extinguishing properties of such formulation already at a low loading level of the fire retardant components (3.5 wt.{\%}).",
author = "Sergey Chernyy and Saif Ullah and Grunde Jomaas and Leisted, {Rolff Ripke} and Mindykowski, {Pierrick Anthony} and Ravnsb{\ae}k, {Jens Bomholdt} and Tordrup, {Sie Woldum} and Kristoffer Almdal",
year = "2015",
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language = "English",
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pages = "136--146",
journal = "European Polymer Journal",
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publisher = "Pergamon Press",

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Modification of poly(styrene-block-butadiene-block-styrene) [SBS] with phosphorus containing fire retardants. / Chernyy, Sergey; Ullah, Saif; Jomaas, Grunde; Leisted, Rolff Ripke; Mindykowski, Pierrick Anthony; Ravnsbæk, Jens Bomholdt; Tordrup, Sie Woldum; Almdal, Kristoffer.

In: European Polymer Journal, Vol. 70, 2015, p. 136-146.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Modification of poly(styrene-block-butadiene-block-styrene) [SBS] with phosphorus containing fire retardants

AU - Chernyy, Sergey

AU - Ullah, Saif

AU - Jomaas, Grunde

AU - Leisted, Rolff Ripke

AU - Mindykowski, Pierrick Anthony

AU - Ravnsbæk, Jens Bomholdt

AU - Tordrup, Sie Woldum

AU - Almdal, Kristoffer

PY - 2015

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N2 - An elaborate survey of the chemical modification methods for endowing highly flammable SBS with increased fire resistant properties by means of chemical modification of the polymer backbone with phosphorus containing fire retardant species is presented. Optimal conditions for free radical addition of the Psingle bondH containing fire retardants to a double bonds of poly(butadiene) block of SBS were found, affording varied degree of the modification (0.2–21 mol%). Alternatively, a two-step procedure based on an epoxidation step followed by hydrolysis of the epoxides with phosphoric acid was developed resulting in 20 mol% of poly(butadiene) block modification. Based on TGA results, organophosporus-modified SBS was found to be amenable to charring – a property which correlated directly with the reduced flammability of the modified polymer observed in Cone Calorimetry tests. Furthermore, conceptually novel application of the H3PO4 modified SBS as a fire retardant additive for bitumen material, in combination with synergetic melamine species, offered 25% better self-extinguishing properties of such formulation already at a low loading level of the fire retardant components (3.5 wt.%).

AB - An elaborate survey of the chemical modification methods for endowing highly flammable SBS with increased fire resistant properties by means of chemical modification of the polymer backbone with phosphorus containing fire retardant species is presented. Optimal conditions for free radical addition of the Psingle bondH containing fire retardants to a double bonds of poly(butadiene) block of SBS were found, affording varied degree of the modification (0.2–21 mol%). Alternatively, a two-step procedure based on an epoxidation step followed by hydrolysis of the epoxides with phosphoric acid was developed resulting in 20 mol% of poly(butadiene) block modification. Based on TGA results, organophosporus-modified SBS was found to be amenable to charring – a property which correlated directly with the reduced flammability of the modified polymer observed in Cone Calorimetry tests. Furthermore, conceptually novel application of the H3PO4 modified SBS as a fire retardant additive for bitumen material, in combination with synergetic melamine species, offered 25% better self-extinguishing properties of such formulation already at a low loading level of the fire retardant components (3.5 wt.%).

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DO - 10.1016/j.eurpolymj.2015.07.015

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