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Biodegradation and ecotoxicological impact of cellulose nanocomposites under Controlled Composting Conditions | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 12, Volume 33, Issue 1 - Serial Number 62, April 2018, Pages 122-132 PDF (1.03 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2018.115394.1437 | ||
| Authors | ||
| Shoboo Salehpour1; Mehdi Jonobi* 2; Masoud Ahmad Zadeh3; Fatemeh Rafieian4 | ||
| 1M.Sc., Graduate in Modification and Conservation of Wood, Department of Wood Technology and Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Iran | ||
| 2Assistant Prof., Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran | ||
| 3University of Tehran | ||
| 4Ph.D., of Food Science and Technology, Department of Food Science and Technology, Isfahan University of Technology, Iran | ||
| Abstract | ||
| The biodegradability of cellulose nananofiber-PVA nanocomposites were studied under controlled composting conditions and the quality of the compost was evaluated. The nanocomposite based on PVA with 5, 10, 20 and 30 wt % of CNF was prepared by using liquid nitrogen and freeze drying techniques. Specimens were buried in compost obtained from municipal solid waste of a compost Factory, Karaj municipality, Iran, for 150 days. The biodegradability of materials was assessed by calculation the visual observation, weight loss, scanning electron microscopy (SEM) and chemistry and transparency (FTIR). The ecotoxicological impact of compost samples was evaluated via plant growth tests with cress and spinach. Biodegradation studies of the films during municipal solid waste confirmed that the biodegradation time of PVA/CNF films greatly depends on the CNF content. The SEM analysis showed that the biodegradability of the films at surface of the samples (deep pores and cracks) was increased with increased the CNF content. By considering the ecotoxicological test using plants growth, it seems that all nanocomposite and pure PVA did not generate a negative effect on germination or development of the vegetal species. | ||
| Keywords | ||
| Poly (vinyl alcohol); Cellulose nanofibers; biodegradability; Ecotoxicological; Compost | ||
| References | ||
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