Publication detail

Structure and Morphology of Microbial Degraded Poly(epsilon-caprolactone)/Graphite Oxide Composite

BÁLKOVÁ, R. HERMANOVÁ, S. VOBĚRKOVÁ, S. DAMBORSKÝ, P. RICHTERA, L. OMELKOVÁ, J. JANČÁŘ, J.

Original Title

Structure and Morphology of Microbial Degraded Poly(epsilon-caprolactone)/Graphite Oxide Composite

Type

journal article in Web of Science

Language

English

Original Abstract

Biodegradation of poly(epsilon-caprolactone) composite with graphite oxide (GO) by the action of Bacillus subtilis (BS) was studied in this work. Nanocomposite produced in a form of thin film was exposed to nutrient cultivation medium with BS as well as to abiotic nutrient medium (control run) at 30 A degrees C. The matrix itself was exposed to the same conditions for comparison. Biodegradation was demonstrated by the weight loss and the decrease of molecular weight during 21 days of the experiment as well as by changes in the surface morphology and structure. Both degraded and control materials were characterized by confocal laser scanning microscopy, differential scanning calorimetry, thermogravimetry, and Fourier transform infrared spectroscopy with attenuated total reflectance. The bacterial growth expressed as the measure of the optical density/turbidity in McFarland units and pH of medium were measured in situ during the experiment. Lipolytic activity of BS was determined by spectrophotometric assay. Degradation process was accompanied by the increase of matrix crystallinity degree. GO served as nucleating agent and facilitated absorption of cultivation media into the composite which led to the increase of the crystallinity degree also for control nanocomposite specimens. It was not evaluated to be promoter of biodegradation. The surface cracks formation was initiated by BS action. Large surface cracks were formed on BS-degraded composite surfaces while surface erosion was more significant on BS-degraded matrix.

Keywords

Poly(e-caprolactone); Graphite oxide; Biodegradation; Lipase; Structure

Authors

BÁLKOVÁ, R.; HERMANOVÁ, S.; VOBĚRKOVÁ, S.; DAMBORSKÝ, P.; RICHTERA, L.; OMELKOVÁ, J.; JANČÁŘ, J.

RIV year

2014

Released

1. 6. 2014

Publisher

Springer

Location

New York

ISBN

1566-2543

Periodical

JOURNAL OF POLYMERS AND THE ENVIRONMENT

Year of study

22

Number

2

State

United States of America

Pages from

190

Pages to

199

Pages count

10

URL

https://link.springer.com/article/10.1007/s10924-013-0630-y

BibTex

@article{BUT103013,
  author="Radka {Bálková} and Soňa {Hermanová} and Stanislava {Voběrková} and Pavel {Damborský} and Lukáš {Richtera} and Jiřina {Omelková} and Josef {Jančář}",
  title="Structure and Morphology of Microbial Degraded Poly(epsilon-caprolactone)/Graphite Oxide Composite",
  journal="JOURNAL OF POLYMERS AND THE ENVIRONMENT",
  year="2014",
  volume="22",
  number="2",
  pages="190--199",
  doi="10.1007/s10924-013-0630-y",
  issn="1566-2543",
  url="https://link.springer.com/article/10.1007/s10924-013-0630-y"
}