Biodegradation of γ-sterilised biomedical polyolefins under composting and fungal culture environments
Article
Alariqi, Sameh A.S., Kumar, A. Pratheep, Rao, B.S.M. and Singh, R.P.. 2006. "Biodegradation of γ-sterilised biomedical polyolefins under composting and fungal culture environments." Polymer Degradation and Stability. 91 (5), pp. 1105-1116. https://doi.org/10.1016/j.polymdegradstab.2005.07.004
Article Title | Biodegradation of γ-sterilised biomedical polyolefins under composting and fungal culture environments |
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ERA Journal ID | 1691 |
Article Category | Article |
Authors | Alariqi, Sameh A.S., Kumar, A. Pratheep, Rao, B.S.M. and Singh, R.P. |
Journal Title | Polymer Degradation and Stability |
Journal Citation | 91 (5), pp. 1105-1116 |
Number of Pages | 12 |
Year | 2006 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0141-3910 |
0144-2880 | |
1873-2321 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.polymdegradstab.2005.07.004 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0141391005003174 |
Abstract | Polyolefin-based commodities are widely used as biomedical devices and food packaging after γ-sterilisation. The aim of the present work was to study the effect of γ-sterilisation on the biodegradation of polyolefins. Films of isotactic polypropylene, high-density polyethylene and ethylene–propylene (EP) copolymers were sterilised under γ-radiation with doses of 10 and 25 kGy. Neat and sterilised samples were incubated in compost and fungal culture environments. The changes in functional groups, surface morphology and chain scission in polymer chains were characterized by FTIR spectroscopy, SEM and viscometric measurements, respectively. A gradual decrease in intrinsic viscosity [η] and increase in carbonyl and hydroxyl regions in FTIR spectra were found for the γ-sterilised samples as a function of increasing dose. Polypropylene was found to be more susceptible to both radio-oxidation and biodegradation. It was observed that in case of ethylene–propylene copolymers, extent of γ-sterilisation and/or biodegradation depends on the composition and distribution of comonomers. Important surface erosion was detected by SEM, for higher sterilisation doses, after composting. |
Keywords | polyolefins; g-Sterilisati; Biodegradation; Chain scission; Composting and fungal culture |
ANZSRC Field of Research 2020 | 400302. Biomaterials |
340302. Macromolecular materials | |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Chemical Laboratory, India |
University of Pune, India |
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