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Light scattering characterization of poly(tetrafluoroethylene‐ co ‐perfluoromethyl vinyl ether) copolymer
Author(s) -
Zhou S.Q.,
Wan Q.,
Liang D.H.,
Chu B.,
Xu P.,
Lai J.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(20000725)77:4<733::aid-app3>3.0.co;2-k
Subject(s) - tetrafluoroethylene , copolymer , polymer chemistry , solvent , dynamic light scattering , molar mass distribution , materials science , ether , chemical engineering , vinyl ether , chemistry , organic chemistry , nanotechnology , composite material , polymer , nanoparticle , engineering
Static and dynamic light scattering experiments were performed to characterize the copolymer of tetrafluoroethylene (TFE) and perfluoromethyl vinyl ether (PMVE). Solvents of perfluoro‐2‐butyltetrahydrofuran (FC‐75) and Flutec PP11 (PP11) were used to dissolve the TFE‐PMVE copolymer. By taking advantage of the solvent properties of FC‐75 and PP11, homogeneous TFE‐PMVE copolymer solutions were specially prepared in a FC‐75/PP11 mixed solvent. Such prepared solutions could provide a strong enough scattered intensity for light scattering studies. The molecular weight, molecular weight distribution, chain dimensions, and conformation were determined for the TFE‐PMVE copolymer in the FC‐75/PP11 mixed solvent. A combination of viscosity and molecular weight measurements enabled the calculation of the k value in the relation of η 0 = k ( M w ) 3.4 and thus the prediction of the molecular weight of a given TFE‐PMVE copolymer with the same composition by using only the simpler and more readily available rheological measurements. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 733–739, 2000