New understanding of moisture vapor transport in fibrous assemblies

Arvind Purushothaman, Kater D. Hake, Siva Parameswaran, Gopal Coimbatore, Seshadri Ramkumar

Research output: Contribution to conferencePaper

Abstract

Comfort of fibrous materials occupies an important role in their end-use applications. Comfort is a complicated and nebulous phenomenon that involves not only the mechanical and structural characteristics of the basic units which make the textile material, but also involves physiological and psychological factors. Among the many different factors that influence the comfort an important attribute is the moisture vapor transport (MVTR). This issue is of more importance in natural fibers like cotton which make them uniquely suitable for apparel applications. Infact, cotton is pre-sold to its customers based on its comfort. The hypotheses that favor this argument are: 1) the presence of the convolutions in cotton result in pores when the fibers are made into compact textile structures and 2) the presence of hollow lumen in the fiber, which enables lateral transport of vapor. In other words, from the structural point of view, both lateral and longitudinal channeling of vapor through cotton textiles enable enhanced moisture vapor transport providing improved comfort. To our best knowledge, there has been no detailed study to understand the influence of the basic chemistry of cotton on the moisture vapor transport. Recent studies from our laboratory have shown that oligosaccharides which form the building block of cotton influence the moisture vapor transport in cotton. Sugars like verbascose, sucrose and ribose and other oligosaccharides such as M-3a, M-1, AN-β, AN-3, AN-6 and AN-7 influence the transport of vapor through cotton. Biochemical analysis of cotton as shown in Figure 1 was carried out to extract the sugars in cotton to understand their influence of MVTR.

Original languageEnglish
StatePublished - Jan 1 2009
EventFiber Society 2009 Fall Meeting and Technical Conference - Athens, United States
Duration: Oct 28 2009Oct 30 2009

Conference

ConferenceFiber Society 2009 Fall Meeting and Technical Conference
CountryUnited States
CityAthens
Period10/28/0910/30/09

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Purushothaman, A., Hake, K. D., Parameswaran, S., Coimbatore, G., & Ramkumar, S. (2009). New understanding of moisture vapor transport in fibrous assemblies. Paper presented at Fiber Society 2009 Fall Meeting and Technical Conference, Athens, United States.