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http://dx.doi.org/10.12772/TSE.2016.53.179

Structural and Physical Properties of Ternary Composite Nonwovens by Fiber Blend Ratio and Heat Treatment Condition  

Park, Young Shin (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University)
Joo, Chang Whan (Department of Advanced Organic Materials & Textile System Engineering, Chungnam National University)
Publication Information
Textile Science and Engineering / v.53, no.3, 2016 , pp. 179-188 More about this Journal
Abstract
In this work, effects of fiber blend ratios and heat treatments on structural and physical properties of ternary composite nonwovens were investigated. Composite nonwovens were fabricated using different blend ratios of nylon, PET, and PTT/PET fibers and were treated in hot-air flow or hot-water immersion. Morphological and pore structure of composite nonwovens were analyzed by SEM and PMI, respectively. Tensile properties of composite nonwovens were measured by Instron with different loading directions. Although shrinkage behavior of PTT/PET bicomponent fibers (bicofibers) increased surface bulkiness of nonwovens via heat treatments, evenness of composite nonwovens was improved in proportion with the ratio of bicofibers. Average pore size of composite nonwovens was decreased owing to heat treatments, and hot-air treatment was found to be a more suitable process for achieving a uniform pore structure compared to hot-water treatments. Pore size distribution of composite nonwovens was found to be narrow with hot-air flow treatments but was widened with increasing bicofiber content. Tensile strength and tensile modulus of nonwovens were inversely proportional to PTT/PET bicofiber content, and their values were observed to considerably decrease in the cross-direction of composite nonwovens. From the results, we confirm that the structural stability of composite nonwovens was improved significantly by heat treatments owing to curling behavior of bicofibers in proportion with content of bicofibers.
Keywords
hot-air; hot-water; PTT/PET bicofibers; composite nonwovens;
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