Novel miscible polymer blend of poly(4-trimethylsilylstyrene) and polyisoprene
Novel miscible polymer blend of poly(4-trimethylsilylstyrene) and polyisoprene
复制标题
聚（4-三甲基甲硅烷基苯乙烯）和聚异戊二烯的新型可混溶聚合物共混物
DOI：
10.1021/ma048527
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发表时间：
2005
期刊：
影响因子：
5.5
通讯作者：
Y. Matsushita
中科院分区：
文献类型：
--
作者：
M. Harada;Takahisa Suzuki;M. Ohya;D. Kawaguchi;A. Takano;Y. Matsushita
利用光学显微镜（OM）和差示扫描量热法（DSC）研究了新发现的可混溶聚合物共混物聚（4-三甲基硅基苯乙烯）和聚异戊二烯的相行为，同时利用小角中子散射（SANS）评估了聚合物-聚合物相互作用的程度。不同组成下具有均匀一相的共混物通过加热变成两相，显示出较低临界溶解温度（LCST）型相图，如果聚合度约为 172 °C，则临界温度为 172 °C。 370. 该共混物给出了低于 LCST 的单一玻璃化转变温度，并且根据关系 χ = 0.027 – 9.5/T，相互作用参数 χ 被表示为温度 T 的函数。
The phase behavior of the newly found miscible polymer blends poly(4-trimethylsilylstyrene) and polyisoprene was investigated with optical microscopy (OM) and also with differential scanning calorimetry (DSC), while the degree of polymer−polymer interaction was evaluated with small-angle neutron scattering (SANS). The blends with homogeneous one phase at various compositions turned into two phases by heating, showing a lower critical solution temperature (LCST) type phase diagram with a critical temperature of 172 °C if the degree of polymerization is ca. 370. The blend gave a single glass transition temperature below the LCST, and the interaction parameter χ was represented as a function of temperature T according to the relationship χ = 0.027 − 9.5/T.