Lamellar Mesophase of Poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) Melts and Water-Swollen Mixtures
Lamellar Mesophase of Poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) Melts and Water-Swollen Mixtures
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聚环氧乙烷-聚环氧丙烷-聚环氧乙烷熔体和水溶胀混合物的层状中间相
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发表时间：
1995
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通讯作者：
E. Jørgensen
中科院分区：
文献类型：
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作者：
K. Mortensen;W. Brown;E. Jørgensen
聚氧化乙烯（PEO）和聚氧化丙烯（PPO）的三嵌段共聚物在低温下形成层状中间相。有序到无序的转变与PEO亚基的熔融转变密切相关。当将水掺入共聚物熔体中时，在高温下形成单相，其可能是作为疏水性PPO嵌段的结果而形成的层状中间相。在低温下，存在两相，其中一个相类似于高温相，而另一个相类似于层状熔体，但溶胀高达10%。
Triblock copolymers of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) form lamellar mesophases at low temperatures. The order-to-disorder transition is closely related to the melting transition of the PEO subunit. When water is incorporated into the copolymer melt, a single phase is formed at high temperatures, which is possibly a lamellar mesophase, formed as a consequence of the hydrophobic PPO blocks. At low temperatures two phases are present, one of which is similar to the high temperature phase while the other is similar to the lamellar melt, but swollen up to 10%.