6533b86dfe1ef96bd12c96cf

RESEARCH PRODUCT

Rheological characterization of polycaprolactam anionically synthesized in the presence of lithium chloride

S. RussoR. D'amicoF. P. La MantiaD. Acierno

subject

chemistry.chemical_classificationMaterials sciencePolymers and PlasticsCaprolactamGeneral ChemistryPolymerlaw.inventionchemistry.chemical_compoundNylon 6chemistryChemical engineeringlawPolymer chemistryMaterials ChemistryMelting pointLithium chlorideMolar mass distributionCrystallizationGlass transition

description

Melt viscosity and dynamic-mechanical data are reported for samples obtained by anionic polymerization of caprolactam, in the presence of LiCl. The full body of results is essentially in line with those previously reported relative to mixtures of inorganic salts and commercial nylon 6, In particular a drastic-decrease of the melting point and of the rate of crystallization is confirmed as well as an increase of the glass transition temperature and of the melt viscosity. Some quantitative differences exist, which may be attributed to the different molecular weight distribution in the polymers employed in the present work.

https://doi.org/10.1002/pen.760201204