Graft of polybutylene terephthalate melt-blown nonwovens by plasma initiation and their surface performance

Main factors affecting the low temperature plasma initiation and graft modification of acrylic acid onto polybutylene terephthalate (PBT) melt-blown nonwovens are studied. The relations between hydrophilic performance of the product and plasma power, treating time, and monomer concentration are investigated. The surface performances of grafted products are analyzed. It is obtained that hydrophilic performance of PBT nonwovens is greatly improved due to the etching of the plasma and the introduction of polar groups so as to meet the needs of leukocyte depleting materials