Preparation and performance of bi-component polylactic acid fiber hot air nonwovens
To obtain fluffy and comfortable surface layer of disposable sanitary products,different hot-air nonwovens were prepared using bi-component polylactic acid(PLA)fibers as raw materials,and their performance was compared with that of conventional polyolefin(ES)hot-air nonwovens.The tensile properties,wear resistance,air and moisture permeability,liquid penetration,antibacterial properties and microbial degradation properties of the hot-air nonwovens were tested.The results showed that,compared with ES hot-air nonwovens,PLA hot-air nonwovens had slightly lower breaking strength,air and moisture permeability,but which still met the standard requirements of disposable sanitary products.Better liquid penetration and bacterial resistance.Prolonging heating time and increasing hot-air temperature could improve the wear resistance and moisture lock capacity of PLA hot-air nonwovens.The decomposition rate reached 92.11%after 140 d of microbial degradation.The overall performance was better.
万方数据
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