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Investigation of phase behavior during melt processing of novel inorganic‐organic polymer hybrid material
Author(s) -
Guschl Peter C.,
Otaigbe Joshua U.,
Loong ChunKeung
Publication year - 2004
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20169
Subject(s) - materials science , rheometry , polymer , rheology , polystyrene , phase inversion , dynamic mechanical analysis , glass transition , phase (matter) , composite material , analytical chemistry (journal) , chemical engineering , polymer chemistry , thermodynamics , organic chemistry , chemistry , biochemistry , membrane , engineering , physics
The phase behavior of novel, binary organic‐inorganic hybrids consisting of an ultra‐low T g tin‐based phosphate glass (Pglass) and polystyrene (PS) was investigated. Dynamic mechanical analysis (DMA) revealed that the glass transition peaks of the PS changed slightly with Pglass volume fraction, leading to a broad peak at the phase inversion point. The phase inversion and degree of phase continuity of the hybrid were studied through solvent extraction, optical/scanning electron microscopy, and dynamic rheology. The Jordhamo and Utracki viscosity ratio models provided reliable estimates of the inversion point. Torque rheometry revealed a trend toward linear additivity within the temperature range 200°C–230°C. Small‐angle neutron scattering experiments gave further evidence of the hybrid phase incompatibility. The results of this study point to a promising new class of blend materials with the potential to present a unique combination of properties impossible to achieve with classical polymer blends. Polym. Eng. Sci. 44:1692–1701, 2004. © 2004 Society of Plastics Engineers.