title: Structure and properties of novel regenerated cellulose fibers prepared in NaOH complex solution.
abstract: Novel spinning solution, prepared by dissolving hydroxyethyl cellulose (HEC) owning a low molar substitution (MS) into NaOH/urea/thiouea aqueous solution with a specific weight ratio of 8:8:6.5, was employed to fabricate a new type of regenerated fibers by wet-spun method. The structure and properties of the resultant HEC fibers were characterized by (13)C NMR, FTIR, synchrotron WAXS, SEM, and tensile tester. The results showed that HEC fibers exhibited structure identical with HEC because of the physical dissolution and coagulation processes, but quite different from native cellulose due to partial breakage of hydrogen bonds and crystal transformation from cellulose I to cellulose II during cellulose modification. The resultant HEC fibers with relatively dense and homogenous structure displayed good moisture related properties and stayed stable in alkali solution with low concentration. Moreover, the novel fibers owned good dry mechanical properties in spit of their slightly poor wet mechanical properties comparable to viscose rayon, showing great potential in substituting the traditional viscose fibers.
authors.affiliation: Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, PR China.
authors.forename: Wencong
authors.initials: W
authors.lastname: Wang
authors.forename: Peng
authors.initials: P
authors.lastname: Zhang
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhang
authors.forename: Faxue
authors.initials: F
authors.lastname: Li
authors.forename: Jianyong
authors.initials: J
authors.lastname: Yu
authors.forename: Jinyou
authors.initials: J
authors.lastname: Lin
mesh_terms: D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry*; D012996:Solutions; D012997:Solvents / Q000737:chemistry; D013718:Tensile Strength
chemical_list: D012996:Solutions; D012997:Solvents; D012972:Sodium Hydroxide; D002482:Cellulose; C002283:hydroxyethylcellulose
keywords: Hydroxyethyl cellulose; Low molar substitution; Mechanical properties; NaOH/urea/thiouea aqueous solution; Regenerated fibers; Structure