Release of dust suppressant additives as oil mist or vapor during cotton carding.
Hersh-SP; Batra-SK; Udomkichdecha-W
Proceedings of the Seventh Cotton Dust Research Conference, beltwide cotton production research conferences, January 3-4, 1983, San Antonio, Texas. Wakelyn PJ, Jacobs RR, eds. Memphis, TN: The National Cotton Council of America, 1983 Jan; :130-134
A determination was made as to whether additives which had been applied to cotton as dust suppressants were emitted into the workplace during carding and, if so, in what amounts. The additives used were Lutex-Additive-1557, Milube-N-32 (87347680), Nopcostat-CDC- 1, Packlube-495, Spraycot-8853, and Texspray (8012951). Additives were applied at 0.25, 0.50, 0.75, and 1.00 percent based on the weight of the fiber stock of the two types of cotton used in the study. These types differed in fineness and grade. One was a low micronaire cotton, harvested in west Texas. The fiber fineness ranged between 3.8 and 4.5 micronaire with an average of 4.1 micronaire. All bales were USDA grade 51 (LM). The second type, a high micronaire cotton, consisted of 25 bales of fiber with a fineness between 5.3 and 5.4 micronaire. Sixteen of these bales were grade 32 (M), six were grade 42 (SLM), and three were grade 52 (LM). For the low micronaire cotton treated with Milube-N-32, Lutex- 1557, and Nopcostat-CDC-1, no oil mist was detected at nominal add ons below 1.00 percent. Milube-N-32 was not detected even at add ons of 1.00 percent. Texspray, the only pure mineral-oil applied, was the only additive that could be detected at a nominal add on of cotton with dust suppressant additives at add on levels that are both effective and do not release detectable amounts of additives into the workplace. The inclusion of surfactants in the additive increases its affinity to the cotton and that affinity is also influenced by fiber fineness or grade.
NIOSH-Grant; Dust-control; Cotton-industry; Laboratory-testing; Cotton-dust; Oil-mists; Mineral-oils; Industrial-processes; Textiles-industry; Vapors
Proceedings of the Seventh Cotton Dust Research Conference, beltwide cotton production research conferences, January 3-4, 1983, San Antonio, Texas
Textile Materials & Management North Carolina State Univ Post Office Box 5006 Raleigh, NC 27607