Publication detail

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

KUČERA, F. PETRUŠ, J. JANČÁŘ, J.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

KUČERA, F.; PETRUŠ, J.; JANČÁŘ, J.

Released

3. 12. 2019

Publisher

Elsevier BV

Location

Nizozemsko

ISBN

0142-9418

Periodical

POLYMER TESTING

Number

80

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

9

Pages count

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"
}