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Role of the polymer microstructure in the thermoreversible gelation of poly(vinyl chloride)
Author(s) -
López Daniel,
Mijangos Carmen,
Guenet JeanMichel,
Santamaría Antxon,
Eugenia Muñoz María
Publication year - 1997
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19971140144
Subject(s) - microstructure , polymer , viscoelasticity , materials science , monomer , vinyl chloride , polymer chemistry , copolymer , polyvinyl chloride , solvent , vinyl polymer , chemical engineering , composite material , chemistry , organic chemistry , engineering
Gels of polyvinylchloride (PVC) and PVC copolymers of different microstructure and molar composition, were prepared in a series of diester‐like solvents. The viscoelastic properties of these gels were evaluated as a function of temperature and the molecular structure was studied by small‐angle neutron scattering. The degrees of proton association in the polymer solutions were determined by 1 H NMR spectroscopy by measuring the intensity of proton bands of CH 2 monomeric units. The body of experimental data shows clearly that there is a straight relation between molecular structure, viscoelastic properties of the gel, degree of polymer‐solvent interaction and polymer microstructure.