The effect of boron-containing layered hydroxy salt (LHS) on the thermal stability and degradation kinetics of poly (methyl methacrylate)

Stephen Majoni, Shengpei Su, Jeanne M. Hossenlopp

Research output: Contribution to journalArticle

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Abstract

A boron-containing layered hydroxy salt (LHS), ZHTMDBB, was prepared and compounded with a highly flammable synthetic polymer, poly (methyl methacrylate) {PMMA}, via melt blending: the composite structure was intercalated with poor dispersion. The effect of this LHS on the flammability, thermal stability and degradation kinetics of PMMA was investigated via cone calorimetry and thermogravimetric analysis. The addition of 3–10% by mass of ZHTMDBB to PMMA resulted in significant reduction of peak heat release rate (22–48%) of the polymer and improvements in thermal stability were observed in both air and nitrogen. Effective activation energies for the degradation process were evaluated using Flynn-Wall-Ozawa, Friedman, and Kissinger methods. All three methods indicated that the additive increased the activation energies of the first step of the degradation process in both air and nitrogen. Activation energies of the second step were lowered in nitrogen but were not significantly affected in air.
Original languageEnglish
Pages (from-to)1593-1604
Number of pages12
JournalPolymer Degradation and Stability
Volume95
Issue number9
DOIs
Publication statusPublished - 2010

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Boron
thermal degradation
Polymethyl Methacrylate
Polymethyl methacrylates
polymethyl methacrylate
boron
Pyrolysis
Thermodynamic stability
thermal stability
Nitrogen
Activation energy
Salts
activation energy
salts
nitrogen
Kinetics
air
Polymers
kinetics
Air

Cite this

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title = "The effect of boron-containing layered hydroxy salt (LHS) on the thermal stability and degradation kinetics of poly (methyl methacrylate)",
abstract = "A boron-containing layered hydroxy salt (LHS), ZHTMDBB, was prepared and compounded with a highly flammable synthetic polymer, poly (methyl methacrylate) {PMMA}, via melt blending: the composite structure was intercalated with poor dispersion. The effect of this LHS on the flammability, thermal stability and degradation kinetics of PMMA was investigated via cone calorimetry and thermogravimetric analysis. The addition of 3–10{\%} by mass of ZHTMDBB to PMMA resulted in significant reduction of peak heat release rate (22–48{\%}) of the polymer and improvements in thermal stability were observed in both air and nitrogen. Effective activation energies for the degradation process were evaluated using Flynn-Wall-Ozawa, Friedman, and Kissinger methods. All three methods indicated that the additive increased the activation energies of the first step of the degradation process in both air and nitrogen. Activation energies of the second step were lowered in nitrogen but were not significantly affected in air.",
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The effect of boron-containing layered hydroxy salt (LHS) on the thermal stability and degradation kinetics of poly (methyl methacrylate). / Majoni, Stephen; Su, Shengpei; Hossenlopp, Jeanne M.

In: Polymer Degradation and Stability, Vol. 95, No. 9, 2010, p. 1593-1604.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The effect of boron-containing layered hydroxy salt (LHS) on the thermal stability and degradation kinetics of poly (methyl methacrylate)

AU - Majoni, Stephen

AU - Su, Shengpei

AU - Hossenlopp, Jeanne M.

PY - 2010

Y1 - 2010

N2 - A boron-containing layered hydroxy salt (LHS), ZHTMDBB, was prepared and compounded with a highly flammable synthetic polymer, poly (methyl methacrylate) {PMMA}, via melt blending: the composite structure was intercalated with poor dispersion. The effect of this LHS on the flammability, thermal stability and degradation kinetics of PMMA was investigated via cone calorimetry and thermogravimetric analysis. The addition of 3–10% by mass of ZHTMDBB to PMMA resulted in significant reduction of peak heat release rate (22–48%) of the polymer and improvements in thermal stability were observed in both air and nitrogen. Effective activation energies for the degradation process were evaluated using Flynn-Wall-Ozawa, Friedman, and Kissinger methods. All three methods indicated that the additive increased the activation energies of the first step of the degradation process in both air and nitrogen. Activation energies of the second step were lowered in nitrogen but were not significantly affected in air.

AB - A boron-containing layered hydroxy salt (LHS), ZHTMDBB, was prepared and compounded with a highly flammable synthetic polymer, poly (methyl methacrylate) {PMMA}, via melt blending: the composite structure was intercalated with poor dispersion. The effect of this LHS on the flammability, thermal stability and degradation kinetics of PMMA was investigated via cone calorimetry and thermogravimetric analysis. The addition of 3–10% by mass of ZHTMDBB to PMMA resulted in significant reduction of peak heat release rate (22–48%) of the polymer and improvements in thermal stability were observed in both air and nitrogen. Effective activation energies for the degradation process were evaluated using Flynn-Wall-Ozawa, Friedman, and Kissinger methods. All three methods indicated that the additive increased the activation energies of the first step of the degradation process in both air and nitrogen. Activation energies of the second step were lowered in nitrogen but were not significantly affected in air.

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DO - 10.1016/j.polymdegradstab.2010.05.033

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SN - 0141-3910

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