Evaluation of biodegradation behavior of poly(butylene succinate-co-butylene adipate) with lowered crystallinity by thermally assisted hydrolysis and methylation-gas chromatography

Baidurah, Siti; Takada, Seiya; Shimizu, Kazuki; Ishida, Yasuhiro; Yamané, Tsuneo; Ohtani, Hajime

doi:10.1016/j.jaap.2012.08.011

Cited by 18 publications

(13 citation statements)

References 13 publications

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“…The remarkable interest in this polymer matrices is derived from the fact that they have ester groups (-COOR-) in the main polymer chain that is susceptible to be degraded under specific conditions. This degradability is mainly based on the hydrolytic susceptibility of ester groups included in aliphatic polymer chains and has been widely studied since several decades ago for very different applications [6][7][8][9]. However, biodegradability is not the only special characteristic that could be interesting for being used as packaging for fresh food, but barrier capacity is also needed [10].…”

Section: Introductionmentioning

confidence: 99%

Nanoclay Effect into the Biodegradation and Processability of Poly(lactic acid) Nanocomposites for Food Packaging

Oliver-Ortega

Vandemoortele²,

Bala

et al. 2021

Polymers

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One of the most promising expectations in the design of new materials for food packaging is focused on the development of biodegradable systems with improved barrier character. In this sense PLA reinforced with nanoclay is a potential alternative to the use of conventional oil-derivative polymers due to the synergetic effect of the biodegradable character of PLA and the barrier-induced effect derived from the dispersion of nanoparticles. In this work, composite materials based on PLA and reinforced with bentonite nanoparticles (up to 4% w/w) (NC) have been prepared to produce films with improved barrier character against water vapor transportation. Additionally, the biodegradable character of the composites depending on the crystallinity of the polymer and percentage of NC have been evaluated in the presence of an enzymatic active medium (proteinase K). Finally, a study of the capacity to film production of the composites has been performed to determine the viability of the proposals. The dispersion of the nanoparticles induced a tortuous pathway of water vapor crossing, reducing this diffusion by more than 22%. Moreover, the nanoclays materials were in all the cases acceptable for food packing in terms of migration. A migration lower than 1 mg/m2 was obtained in all the materials. Nonetheless, the presence of the nanoclays in decreased biodegradable capacity was observed. The time was enlarged to more than 15 days for the maximum content (4% w/w). On the other hand, the incorporation of NC does not avoid the processability of the material to obtain film-shaped processed materials.

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Section: Introductionmentioning

confidence: 99%

Nanoclay Effect into the Biodegradation and Processability of Poly(lactic acid) Nanocomposites for Food Packaging

Oliver-Ortega

Vandemoortele²,

Bala

et al. 2021

Polymers

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“…[13][14][15][16] The THM reaction under optimized conditions allows for the quantitative detection of the constituent monomers in the polymer chains as their corresponding methyl derivatives through selective hydrolysis of the ester or carbonate linkages and subsequent methylation by TMAH. The authors reported that the copolymer composition of a biodegradable copolyester, poly(butylene succinate-co-butylene adipate) (PBSA), was successfully determined by means of THM-GC using trace amounts (ca.…”

Section: Introductionmentioning

confidence: 99%

“…0.02 mg) of the film samples. 15,16 In this work, the biodegradation behavior of PBSA was also evaluated by focusing on the change in copolymer compositions measured by THM-GC. Furthermore, we have also exploited this technique to determine the copolymer composition of trace amounts (ca.…”

Section: Introductionmentioning

confidence: 99%

Rapid and Direct Compositional Analysis of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in Whole Bacterial Cells by Thermally Assisted Hydrolysis and Methylation-Gas Chromatography

et al. 2015

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Thermally assisted hydrolysis and methylation-gas chromatography (THM-GC) in the presence of an organic alkali was applied to the direct analysis of copolymer composition for poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)] accumulated in whole bacterial cells. Cupriavidus necator was grown on a liquid medium with different molar ratios of valeric acid (V) to glucose (G) in order to control the compositions of P(3HB-co-3HV) produced in the cells. Trace amounts (0.03 mg) of dried Cupriavidus necator cells were directly subjected to THM-GC in the presence of tetramethylammonium hydroxide (TMAH) at 400 C. The obtained chromatograms clearly showed nine characteristic peaks, attributed to the THM products from 3HB and 3HV units in the polymer chains, without any appreciable interference by the bacterial matrix components. Based on these peak intensities, the copolymer compositions were determined rapidly without using any cumbersome sample pretreatment. Moreover, the compositions thus obtained were in good agreement with those obtained by the conventional technique.Keywords Poly(3-hydroxybutyrate-co-3-hydroxyvalerate), thermally assisted hydrolysis and methylation-GC, tetramethylammonium hydroxide, copolymer composition

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“…The THM-GC system in this study was basically the same as that described in our previous papers [10][11][12][13]. A vertical microfurnance pyrolyzer (Frontier Laboratories, PY-2010D) was attached to a GC (Agilent, HP 4890) equipped with a flame ionization detector (FID).…”

Section: Thm-gc Measurementmentioning

confidence: 99%

“…Recently, a thermally assisted hydrolysis and methylation-gas chromatography (THM-GC) method in the presence of strong organic alkali such as tetramethylammonium hydroxide (TMAH) has become a useful technique for structural and compositional analyses of various condensation polymers [3,[9][10][11][12][13]. This method often provides extremely simplified and quantitative chromatograms mainly consisting of methyl derivatives of the constituent monomers in the polymer chains.…”

Section: Introductionmentioning

confidence: 99%

Direct determination of poly(3-hydroxybutyrate) accumulated in bacteria by thermally assisted hydrolysis and methylation-gas chromatography in the presence of organic alkali

Baidurah

Kubo

Ishida

et al. 2018

Pure and Applied Chemistry

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Abstract:There is considerable interest in the development of simple methods for quantifying production of the biodegradable polyester poly(3-hydroxybutyrate) [P(3HB)] by bacteria. Cells of Cupriavidus necator were grown on agar medium containing different concentrations of glucose (10-25 g/L) as a sole carbon source. Trace amounts (100 ± 5 μg) of dried C. necator cells were directly subjected to thermally assisted hydrolysis and methylation-gas chromatography (THM-GC) in the presence of tetramethylammonium hydroxide (TMAH). On the resulting chromatograms, a series of characteristic peaks, attributed to the THM products from poly(3-hydroxybutylate) accumulated in the bacterial cells, were clearly observed without any interfering component. Based on the peak intensities, the contents of P(3HB) in C. necator were determined precisely and rapidly without using any cumbersome sample pretreatment. Furthermore, the values of the P(3HB) contents coincided overall with those obtained by the conventional method involving solvent extraction followed by gravimetric determination.

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Evaluation of biodegradation behavior of poly(butylene succinate-co-butylene adipate) with lowered crystallinity by thermally assisted hydrolysis and methylation-gas chromatography

Cited by 18 publications

References 13 publications

Nanoclay Effect into the Biodegradation and Processability of Poly(lactic acid) Nanocomposites for Food Packaging

Nanoclay Effect into the Biodegradation and Processability of Poly(lactic acid) Nanocomposites for Food Packaging

Rapid and Direct Compositional Analysis of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in Whole Bacterial Cells by Thermally Assisted Hydrolysis and Methylation-Gas Chromatography

Direct determination of poly(3-hydroxybutyrate) accumulated in bacteria by thermally assisted hydrolysis and methylation-gas chromatography in the presence of organic alkali

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