Journal of Polymer Engineering
Editor-in-Chief: Grizzuti, Nino
IMPACT FACTOR 2017: 0.778
CiteScore 2017: 0.77
SCImago Journal Rank (SJR) 2017: 0.244
Source Normalized Impact per Paper (SNIP) 2017: 0.551
Polypropylene-based long-life insecticide-treated mosquito netting
- Department of Chemical Engineering, Institute of Applied Materials, University of Pretoria, Lynwood Road, Pretoria 0001, South Africa
- Present address: University of Pretoria – Chemical Engineering, PO Box 35285 Menlo Park, 0102 Pretoria, South Africa.
- Other articles by this author:
- De Gruyter OnlineGoogle Scholar
The World Health Organization (WHO) is promoting the use of insecticide treated nets (ITNs) in order to roll back malaria. Long-life netting (LLIN) is preferred and this study investigated the possibility of incorporating the insecticide in the fiber polymer. Multifilament polypropylene (PP) yarn, containing up to 0.76% of pyrethroid insecticide, was successfully produced on a conventional production-scale fiber-spinning machine. The insecticides were incorporated via masterbatches that contained up to 18.8% active with low-density polyethylene (LDPE) as the carrier. Nets knitted from the yarns were tested using bioassays with mosquitoes. Initial efficacy complied with WHO specifications but the performance deteriorated with the number of wash cycles. Crystalline insecticides, featuring a melting point above the wash temperature of 60°C (e.g., β-cyfluthrin), provided better wash resistance than amorphous insecticides (e.g., cyfluthrin).
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