Title page for ETD etd-07072004-124535


Type of Document Master's Thesis
Author Zhang, Xiaoqun
Author's Email Address xzhang4@lsu.edu
URN etd-07072004-124535
Title Investigation of Biodegradable Nonwoven Composites Based on Cotton, Bagasse and Other Annual Plants
Degree Master of Science (M.S.)
Department Human Ecology
Advisory Committee
Advisor Name Title
Ioan I. Negulescu Committee Chair
Betsy Garrison Committee Member
Jenna Kuttruff Committee Member
Jonathan Chen Committee Member
Keywords
  • nonwoven composites
  • cotton
  • bagasse
  • kenaf
  • biodegradable
Date of Defense 2004-04-12
Availability unrestricted
Abstract
In this study a new method of preparing biodegradable all-cellulosic composite nonwoven materials composed of cotton and kenaf or cotton and bagasse has been developed.

Alkaline extracted kenaf or bagasse fibers were used as the main component of composite nonwovens. Recyclable or low value cotton fibers were used to entangle coarser kenaf or bagasse fibers in a web on which the nonwoven architecture was based. The novel adhesive system developed in this work for the web bonding was cellulose from a solution, in N-methyl morpholine N-oxide monohydrate. The completely biodegradable composite nonwovens were obtained by sandwiching and hot-pressing the cellulosic webs and the adhesive into a bonded sheet. It was shown that synthetic polymers can be substituted for the stabilization of nonwovens by a solution of cellulose prepared from recyclable cotton textiles.

Some relevant properties of final nonwoven products, such as strength, viscoelastic characteristics and thermal properties were determined and compared among several compositions. The physical characteristics of all-cellulosic composite nonwovens were comparable to that of biodegradable composite nonwovens prepared earlier at LSU from natural fibers and a biodegradable synthetic polyester.

Practical application of all-cellulosic composite nonwovens will be determined by

the economics of delignification of composing fibers.

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