Thermal decomposition of biodegradable polyesters—II. Poly(lactic acid)

Kopinke, Frank‐Dieter; Remmler, M.; Mackenzie, Kenneth D.; Möder, Monika; Wachsen, Olaf

doi:10.1016/0141-3910(96)00102-4

Cited by 558 publications

(421 citation statements)

References 10 publications

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“…Similar decomposition products, except succinic anhydride, were also View Article Online observed during decomposition of poly(butylene terephthalate) (PBT) and are due to the existence of 1,4-butylene glycol 37 while CO and CO 2 are due to the carboxyl end groups of polyesters. 38,39 At higher retention times allyl and diallyl compounds with characteristic vinyl groups and higher molecular weights were detected. Furthermore, it seems that the amount of decomposition products is directly dependent on the decomposition temperature.…”

Section: Evaluation Of Evolved Gas Analysis By Gc-msmentioning

confidence: 99%

Thermal degradation kinetics and decomposition mechanism of PBSu nanocomposites with silica-nanotubes and strontium hydroxyapatite nanorods

Roumeli

Chrissafis

Lioutas

et al. 2014

Phys. Chem. Chem. Phys.

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Novel poly(butylene succinate) (PBSu) nanocomposites containing 5 and 20 wt% mesoporous strontium hydroxyapatite nanorods (SrHNRs) and silica nanotubes (SiNTs) were prepared by melt-mixing. A systematic investigation of the thermal stability and decomposition kinetics of PBSu was performed using pyrolysis-gas chromatography-mass spectroscopy (Py-GC-MS) and thermogravimetry (TG). Thorough studies of evolving decomposition compounds along with the isoconversional and model-fitting analysis of mass loss data led to the proposal of a decomposition mechanism for PBSu. Moreover, the effects of SrHNRs and SiNTs on the thermal stability and decomposition kinetics of PBSu were also examined in detail. The complementary use of these techniques revealed that the incorporation of SiNTs in PBSu does not induce significant effects neither on its thermal stability nor on its decomposition mechanism. In contrast, the addition of SrHNRs resulted in the catalysis of the initial decomposition steps of PBSu and also in modified decomposition mechanisms and activation energies. The evolving gaseous products of PBSu and their evolution pattern in the SiNT nanocomposites were the same as in neat PBSu, while they were slightly modified for the SrHNR nanocomposites, confirming the findings from thermogravimetric analysis.

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Section: Evaluation Of Evolved Gas Analysis By Gc-msmentioning

confidence: 99%

Thermal degradation kinetics and decomposition mechanism of PBSu nanocomposites with silica-nanotubes and strontium hydroxyapatite nanorods

Roumeli

Chrissafis

Lioutas

et al. 2014

Phys. Chem. Chem. Phys.

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“…Therefore, co-pyrolysis of PLA and biomass (willow) offers an alternative waste treatment option and may act as an upgrading step during the pyrolysis of willow. The thermal decomposition of PLA has already been studied in detail [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Flash co-pyrolysis of biomass with polylactic acid. Part 1: Influence on bio-oil yield and heating value

Cornelissen

Yperman

Reggers

et al. 2008

Fuel

124

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High amounts of water present in bio-oil are one of the major drawbacks for its utilisation as a fuel. One technology that shows the potential to satisfy the demand for bio-oil with a reduced water content is the flash co-pyrolysis of biomass with polylactic acid, PLA. The influence of PLA on the pyrolysis of willow is investigated with a semi-continuous home-built pyrolysis reactor. Flash co-pyrolysis of willow/PLA blends (10:1, 3:1, 1:1 and 1:2) show synergetic interaction. A higher bio-oil yield and a lower water content as a function of the willow/PLA ratios are obtained. Among the tested blends, the 1:2 willow/PLA blend shows the most pronounced synergy: a reduction in the production of pyrolytic water of almost 28 %, accompanied by an increase of more than 37 % in the production of water-free bio-oil. Additionally, PLA shows to have a positive influence on the energetic value of the bio-oil produced and on the resulting energy recuperation.

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“…PLA performance in terms of durability are limited by multiple chemical ageing mechanisms such as thermal decomposition [3][4][5], hydrolysis [6][7][8], photo oxidation [9,10], natural weathering [11] and thermo oxidation at high temperature [12,13]. Due to biodegradable applications, numerous studies dealing with hydrolytic ageing are available (see for instance reference [8]).…”

Section: Introductionmentioning

confidence: 99%

Oxidative degradation of polylactide (PLA) and its effects on physical and mechanical properties

Rasselet¹,

Ruellan²,

Guinault³

et al. 2014

European Polymer Journal

142

102

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. AbstractThe thermo-oxidative degradation of polylactide (PLA) films was studied between 70 and 150°C. It was shown that the oxidative degradation of PLA leads to a random chain scission responsible for a reduction of the molar mass. These molar mass changes affect Tg and the degree of crystalllinity, and it was found that Tg decreases according to the Fox-Flory theory whereas the degree of crystalllinity increases due to a chemicrystallization process. A correlation between molar mass and strain at break during oxidation has been established:PLA displays a brittle behaviour when M n falls below 40 kg.mol -1 in agreement with relationships linking the critical value for embrittlement with the molar mass between entanglements.

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Thermal decomposition of biodegradable polyesters—II. Poly(lactic acid)

Cited by 558 publications

References 10 publications

Thermal degradation kinetics and decomposition mechanism of PBSu nanocomposites with silica-nanotubes and strontium hydroxyapatite nanorods

Thermal degradation kinetics and decomposition mechanism of PBSu nanocomposites with silica-nanotubes and strontium hydroxyapatite nanorods

Flash co-pyrolysis of biomass with polylactic acid. Part 1: Influence on bio-oil yield and heating value

Oxidative degradation of polylactide (PLA) and its effects on physical and mechanical properties

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