Publication result detail

Biodegradation study on poly(epsilon-caprolactone) with bimodal molecular weight distribution

HERMANOVÁ, S.; BÁLKOVÁ, R.; VOBĚRKOVÁ, S.; CHAMRADOVÁ, I.; OMELKOVÁ, J.; RICHTERA, L.; MRAVCOVÁ, L.; JANČÁŘ, J.

Original Title

Biodegradation study on poly(epsilon-caprolactone) with bimodal molecular weight distribution

English Title

Biodegradation study on poly(epsilon-caprolactone) with bimodal molecular weight distribution

Type

WoS Article

Original Abstract

Poly(epsilon-caprolactone) (PCL) of bimodal molecular weight distribution was exposed to the action of enzymes-lipases from Aspergillus oryzae in phosphate buffer at pH 7 and 37 degrees C, and those produced in situ by Bacillus subtilis in nutrient medium at 30 degrees C for 42 days. The occurrence of biodegradation is proved on the basis of the weight loss, decrease of molecular weight, carbonyl index, crystallinity, and development of cracks on the PCL surfaces. In the case of Bacillus subtilis, the degradation (10 wt % loss of PCL) proceeds faster in comparison with lipase from Aspergillus oryzae (2.6 wt % loss of PCL), where the degradation process seems to stop during 14 days of experiment. The gel permeation chromatography results reveal that preferential degradation of lower molecular portion did not occur but it is assumed that PCL chains were cleaved in accordance with particular degradation mechanism that depends significantly on biological agent. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

English abstract

Poly(epsilon-caprolactone) (PCL) of bimodal molecular weight distribution was exposed to the action of enzymes-lipases from Aspergillus oryzae in phosphate buffer at pH 7 and 37 degrees C, and those produced in situ by Bacillus subtilis in nutrient medium at 30 degrees C for 42 days. The occurrence of biodegradation is proved on the basis of the weight loss, decrease of molecular weight, carbonyl index, crystallinity, and development of cracks on the PCL surfaces. In the case of Bacillus subtilis, the degradation (10 wt % loss of PCL) proceeds faster in comparison with lipase from Aspergillus oryzae (2.6 wt % loss of PCL), where the degradation process seems to stop during 14 days of experiment. The gel permeation chromatography results reveal that preferential degradation of lower molecular portion did not occur but it is assumed that PCL chains were cleaved in accordance with particular degradation mechanism that depends significantly on biological agent. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

Keywords

polycaprolactone; degradation; lipase; Bacillus subtilis; Aspergillus oryzae; crystallinity; morphology; bimodal molecular weight distribution

Key words in English

polycaprolactone; degradation; lipase; Bacillus subtilis; Aspergillus oryzae; crystallinity; morphology; bimodal molecular weight distribution

Authors

HERMANOVÁ, S.; BÁLKOVÁ, R.; VOBĚRKOVÁ, S.; CHAMRADOVÁ, I.; OMELKOVÁ, J.; RICHTERA, L.; MRAVCOVÁ, L.; JANČÁŘ, J.

RIV year

2013

Released

15.03.2013

Publisher

John Wiley & Sons

ISBN

0021-8995

Periodical

JOURNAL OF APPLIED POLYMER SCIENCE

Volume

2013 (127)

Number

6

State

United States of America

Pages from

4726

Pages to

4735

Pages count

10

URL

http://onlinelibrary.wiley.com/doi/10.1002/app.38078/abstract

BibTex

@article{BUT93187,
  author="Soňa {Hermanová} and Radka {Bálková} and Stanislava {Voběrková} and Ivana {Chamradová} and Jiřina {Omelková} and Lukáš {Richtera} and Ludmila {Mravcová} and Josef {Jančář}",
  title="Biodegradation study on poly(epsilon-caprolactone) with bimodal molecular weight distribution",
  journal="JOURNAL OF APPLIED POLYMER SCIENCE",
  year="2013",
  volume="2013 (127)",
  number="6",
  pages="4726--4735",
  doi="10.1002/app.38078",
  issn="0021-8995",
  url="http://onlinelibrary.wiley.com/doi/10.1002/app.38078/abstract"
}