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SANS Study of Ring Topology Effects on the Miscibility of Polymer Blends
Macromolecules ( IF 5.1 ) Pub Date : 2018-02-22 00:00:00 , DOI: 10.1021/acs.macromol.7b02359 Yuki Kobayashi 1 , Yuya Doi 1 , Siti Sarah Abdul Rahman 1 , Eunhye Kim 2 , Tae-Hwan Kim 2 , Atsushi Takano 1 , Yushu Matsushita 1
Macromolecules ( IF 5.1 ) Pub Date : 2018-02-22 00:00:00 , DOI: 10.1021/acs.macromol.7b02359 Yuki Kobayashi 1 , Yuya Doi 1 , Siti Sarah Abdul Rahman 1 , Eunhye Kim 2 , Tae-Hwan Kim 2 , Atsushi Takano 1 , Yushu Matsushita 1
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Highly purified hydrogenous ring poly(4-trimethylsilylstyrene) (h-PT) and deuterated ring polyisoprene (d-PI) samples as well as their linear counterparts were prepared, and the miscibility of three kinds of polymer blends, i.e., linear–linear, ring–linear, and ring–ring, denoted as L–L, R–L, and R–R, respectively, with all 50/50 vol % was evaluated by small angle neutron scattering (SANS) measurements. PT and PI are known as a miscible polymer pair with lower critical solution temperature (LCST) type phase diagram. At low-q regime of the scattering profiles, R–R blend exhibits much higher scattering intensity than L–L and R–L, while the latter two show similar profiles. Moreover, from Zimm’s analysis, the spinodal temperature of R–R was estimated to be about 100 °C lower than the other two blends, L–L and R–L. These results suggest that the miscibility of R–R is considerably lower than the other two blends, which is a clear manifestation of the topological effect on the phase behavior of the present blend.
中文翻译：
SANS环状拓扑对聚合物共混物混溶性影响的研究
制备了高纯度氢环聚（4-三甲基甲硅烷基苯乙烯）（h -PT）和氘代环聚异戊二烯（d -PI）样品以及它们的线性对应物，并制备了三种聚合物共混物，即线性-线性，通过小角度中子散射（SANS）测量评估了环线性和环环分别表示为L–L，R–L和R–R，所有50/50 vol％。PT和PI被称为具有较低临界溶液温度（LCST）型相图的可混溶聚合物对。在低q在散射分布图的范围内，R–R共混物显示出比L–L和R–L高得多的散射强度，而后两者表现出相似的分布图。此外，根据Zimm的分析，R–R的旋节线温度估计比其他两种共混物L–L和R–L低约100°C。这些结果表明，R–R的混溶性远低于其他两种共混物，这清楚地表明了拓扑结构对本共混物的相行为的影响。
更新日期：2018-02-22
中文翻译：
SANS环状拓扑对聚合物共混物混溶性影响的研究
制备了高纯度氢环聚（4-三甲基甲硅烷基苯乙烯）（h -PT）和氘代环聚异戊二烯（d -PI）样品以及它们的线性对应物，并制备了三种聚合物共混物，即线性-线性，通过小角度中子散射（SANS）测量评估了环线性和环环分别表示为L–L，R–L和R–R，所有50/50 vol％。PT和PI被称为具有较低临界溶液温度（LCST）型相图的可混溶聚合物对。在低q在散射分布图的范围内，R–R共混物显示出比L–L和R–L高得多的散射强度，而后两者表现出相似的分布图。此外，根据Zimm的分析，R–R的旋节线温度估计比其他两种共混物L–L和R–L低约100°C。这些结果表明，R–R的混溶性远低于其他两种共混物，这清楚地表明了拓扑结构对本共混物的相行为的影响。
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