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- W2040069044 abstract "The densities, as a function of temperature and pressure, of several main-chain liquid-crystalline polymers were measured. The polymers were a copolyester and a series of azomethine ether polymers containing flexible spacer groups along the chain. An equation-of-state theory was developed, which was based on a cell model where expansion of the lattice occurred only in two dimensions. The ability of the theory to describe the PVT properties was investigated and compared to a simple cell model that has been used for flexible polymers. It was found that the liquid-crystal cell model described the PVT properties of the liquid-crystalline polymers better than the simple cell model. The fit became worse for polymers with flexible spacing groups, and the equation did not describe flexible polymers such as polyethylene. It is inferred that the liquid-crystal model gives a better physical description of the structure of rigid polymers." @default.
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- W2040069044 date "1989-08-01" @default.
- W2040069044 modified "2023-09-27" @default.
- W2040069044 title "PVT properties of main-chain liquid-crystalline polymers" @default.
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- W2040069044 doi "https://doi.org/10.1016/0032-3861(89)90217-6" @default.
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