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The effect of process parameters on the properties of elastic melt blown nonwovens: Air pressure and DCD |
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| Authors: | Li Chang Yanfen Zhou Kun Dai Liang Jiang Stephen Jerrams Jianwei Ma Shaojuan Chen |
| Affiliation: | 1. College of Textiles and Clothing, Qingdao University, Qingdao, China
Contribution: Data curation (lead), Investigation (lead), Writing - original draft (lead);2. College of Textiles and Clothing, Qingdao University, Qingdao, China Contribution: Methodology (equal), Writing - review & editing (equal);3. College of Textiles and Clothing, Qingdao University, Qingdao, China Contribution: Visualization (lead);4. College of Textiles and Clothing, Qingdao University, Qingdao, China;5. Centre for Elastomer Research, Focas Research Institute, Dublin Institute of Technology, Dublin, Ireland Contribution: Writing - review & editing (equal);6. College of Textiles and Clothing, Qingdao University, Qingdao, China Contribution: Supervision (equal), Validation (equal) |
| Abstract: | An elastic masterbatch and elastic melt blown nonwovens are prepared based successively on styrene-ethylene/butylene-styrene (SEBS) and polypropylene (PP) blend. The phase separation morphology, rheological properties and crystal structure of the elastic masterbatch are investigated. The results show that a compatible and stable structure is obtained in molten SEBS and PP blend with excellent mobility in the temperature range of 210–230°C. The crystallization of PP slows down resulting in a finer structure due to the restriction of the SEBS network structure with rarely change of crystalline structure. The relationship between process parameters and properties of the elastic nonwoven is also studied in detail. Air pressure and die to collector distance (DCD) have discernible effects on fiber diameter and bonding between fibers, further influencing the performances of nonwovens including porosity, tensile strength and elastic recovery. Elastic recovery is shown to be significantly more affected by DCD than by air pressure. |
| Keywords: | air pressure DCD elastic recovery melt blown nonwovens |