Premium
Investigation of wicking phenomenon and tensile properties in three‐layer composite nanofibrous PA / PLLA yarn
Author(s) -
Moghbelnejad Zeinab,
Gharehaghaji Ali Akbar,
Yousefzadeh Maryam,
Hajiani Farideh
Publication year - 2021
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25601
Subject(s) - yarn , materials science , composite material , ultimate tensile strength , composite number , polyamide , layer (electronics) , fabrication , adhesion , capillary action , fiber , medicine , alternative medicine , pathology
One critical property of a nanofibrous structure is the wicking behavior in contact with liquids. This work's purpose is fabrication and investigation of tensile and wicking properties of a newly designed three‐layer nanofibrous yarn consisting of polyamide 6/poly(L‐lactic acid) (PA/PLLA) with a similar idea to Bobtex spun yarn structure in which adhesion between core (PA) and sheath (PLLA) is provided with a thin layer of polymeric thin film. The tensile strength and strain decreased 32 and 46%, respectively, in a three‐layer yarn compared with two‐layer, that is, yarn without the adhesion film. In addition, the ultimate strength of the three‐layer yarn was higher than a PLLA yarn. The vertical wicking test for three‐layer nanofibrous yarn reveals that at short times, capillary rise kinetics follow the Lucas–Washburn law while increasing the take‐up velocity of the take‐up roller in yarn fabrication leads to increasing the maximum height of water in yarn.