Surface modification to improve powder bulk behavior under humid conditions

Show simple item record Karde, Vikram Panda, Siddhant Ghoroi, Chinmay 2015-04-09T17:25:44Z 2015-04-09T17:25:44Z 2015-07
dc.identifier.citation Karde, Vikram; Panda, Siddhant and Ghoroi, Chinmay, “Surface modification to improve powder bulk behavior under humid conditions”, Powder Technology, DOI: 10.1016/j.powtec.2015.03.025, vol. 278, pp. 181-188, Jul. 2015. en_US
dc.identifier.issn 0032-5910
dc.description.abstract Humid environment often creates various problems in fine powder processing and frequently poses a substantial threat to the final product quality. The present study focuses on improvement of bulk behavior of fine powder under humid environment using surface modification. Corn starch powder was surface modified using Aerosil R972 grade of hydrophobic nano-silica through dry coating. It was found that flow and packing properties of uncoated powder deteriorated at elevated relative humidity (RH) conditions with prominent changes observed above 60% RH. Also, at low RH conditions (30%), increased interparticle frictional forces owing to the diminished lubricating moisture layer resulted in decreased flow of uncoated powder. In contrast, surface-modified powder exhibited resistance to such detrimental effects of moisture loss and gain at low and high RH respectively. The present study showed that surface modification of powders helps to reduce the interparticle cohesion in fine powders and prevents the detrimental effects of humidity on its bulk behavior. en_US
dc.description.statementofresponsibility by Vikram Karde, Siddhant Panda and Chinmay Ghoroi
dc.format.extent vol. 278, pp. 181-188
dc.language.iso en en_US
dc.publisher Science Direct en_US
dc.subject Bulk behavior en_US
dc.subject Fine powder en_US
dc.subject Humidity en_US
dc.subject Surface modification en_US
dc.subject Powder flow and packing en_US
dc.title Surface modification to improve powder bulk behavior under humid conditions en_US
dc.type Article en_US
dc.relation.journal Powder Technology

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