| Summary: | 碩士 === 逢甲大學 === 紡織工程研究所 === 86 === The solvents in the method of solution removal of bicomponent
fibers often cause the problems of environment and equipment,
therefore, the research of adopting water soluble constituent to
replace organic solvent extract constituent is noticeable.
Poly(vinyl alcohol) is a water-soluble polymer, and water is
the best solvent. By utilizing the water-soluble PVA as a
soluble constituent which can simplify the process and the
requirement of safety. However the thermoplasticity of PVA is
poor。 In this study, partialhydrolysis PVA is used and Glycerol
is selected as plasticizer to produce Thermoplastic Poly(Vinyl
Alcohol). After plasticization, the melting-point and viscosity
of PVA were decreased to considerable extent and the
thermoplasticity was improved obviously. It confirm Glycerol and
PVA has good compatibility. The processability of melt-
spinning, fiber formation andwater-solubility of fiber are
excellent in various conditions. From the rheological
analysis of TPVA/PP blend, the form of blended fiber can be
discussed. By blending the low viscosity TPVA with PP or
increase the volumeproportion of PP which can get more visible
PP microfibers or porous fibers respectively after dissolve the
TPVA constituent from SEM photographs. This study confirm TPVA
is a appropriate soluble constituent of blended fiber.
|
|---|
