6533b828fe1ef96bd128785d
RESEARCH PRODUCT
Influence of processing conditions on some properties of anionically synthesized polycaprolactam in presence of lithium chloride
G. PolizzottiGiuseppe TitomanlioF. P. La MantiaS. RussoD. Aciernosubject
chemistry.chemical_classificationMaterials sciencePolymers and PlasticsCaprolactamGeneral ChemistryPolymerSurfaces Coatings and Filmslaw.inventionAmorphous solidchemistry.chemical_compoundCrystallinityAnionic addition polymerizationchemistryChemical engineeringlawPolymer chemistryMaterials ChemistryMelting pointLithium chlorideCrystallizationdescription
Nylon 6–LiCl systems of various concentrations were prepared by anionic polymerization of caprolactam in the presence of salt. A depression of both crystallization rate and melting temperature was evidenced through x-ray, density, and DSC analyses. Such a preliminary characterization allowed for choosing the proper conditions in order to obtain amorphous fibers from a spinning operation which was performed at a temperature lower than the pure polymer melting point. These results are of technological relevance, especially in view of obtaining, as in similar cases, large amorphous orientations through a spinning–drawing process and high-modulus fibers after subsequent crystallization. Also, the possibility of restoring some crystallinity in the material has been proven.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1980-09-01 | Journal of Applied Polymer Science |