Detail publikace

The structure-hydrolysis relationship of poly(3-hydroxybutyrate)

KUČERA, F. PETRUŠ, J. JANČÁŘ, J.

Originální název

The structure-hydrolysis relationship of poly(3-hydroxybutyrate)

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The influence of the structure of different poly (3-hydroxybutyrate) (PHB) materials on the water diffusion and the extent of non-catalyzed/catalyzed hydrolytic degradation was investigated in the presence of >99% moisture. The change of the structure during the hydrolytic degradation was evidenced by Fourier transform infrared spectroscopy (FTIR). Melt volume rate measurement (MVR) and oscillatory rheological tests proved the enhanced rate of acid/alkali-catalyzed hydrolysis as well as trans-esterification of PHB oligomers during the acid-catalyzed hydrolysis. As evidenced by the differential scanning calorimetry (DSC), both the acid- and alkali-catalyzed hydrolysis occurs even in crystalline domains and thus causes more significant changes in the morphology. Since the hydrolysis predominates in amorphous regions, the degree of crystallinity affects the course of hydrolysis as well as water absorption. The results of the size exclusion chromatography (SEC) proved the contrast between non-catalyzed and catalyzed hydrolysis whereas acid-catalyzed hydrolysis leads to the increase of molecular weight due to trans-esterification of PHB.

Klíčová slova

Poly(3-hydroxybutyrate); Biodegradability; Hydrolysis; Rheology; Crystallinity

Autoři

KUČERA, F.; PETRUŠ, J.; JANČÁŘ, J.

Vydáno

3. 12. 2019

Nakladatel

Elsevier BV

Místo

Nizozemsko

ISSN

0142-9418

Periodikum

POLYMER TESTING

Číslo

80

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

9

Strany počet

9

URL

https://www.sciencedirect.com/science/article/pii/S0142941819309237?dgcid=author

BibTex

@article{BUT158399,
  author="František {Kučera} and Josef {Petruš} and Josef {Jančář}",
  title="The structure-hydrolysis relationship of poly(3-hydroxybutyrate)",
  journal="POLYMER TESTING",
  year="2019",
  number="80",
  pages="1--9",
  doi="10.1016/j.polymertesting.2019.106095",
  issn="0142-9418",
  url="https://www.sciencedirect.com/science/article/pii/S0142941819309237?dgcid=author"
}