Design of thermochromic polymer blends containing low-mass compounds
Design of thermochromic polymer blends containing low-mass compounds
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DOI：
10.1002/app.45927
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发表时间：
2018-03-05
影响因子：
3
通讯作者：
Yamaguchi, Masayuki
中科院分区：
文献类型：
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作者：
Kuhakongkiat, Nawaphorn;Sugiyama, Mitsunari;Yamaguchi, Masayuki
我们研究了一种由乙烯和醋酸乙烯共聚物（EVA）和乙烯基丁醛、乙烯醇和醋酸乙烯酯共聚物（PVB）组成的不混相聚合物共混物的透光性。EVA和PVB都用于夹层玻璃的夹层。我们发现混合物的透明度取决于环境温度。这可以归因于EVA和PVB之间折射率的温度依赖性的差异。该共混物在室温下具有良好的透明度，因为其组分之间的折射率差异很小。然而，在高温或低温下，由于光散射，混合物变得不透明。增塑剂的加入有利于影响共混物表现出高透明度的温度范围，因为折射率及其温度依赖性受到增塑剂的影响。我们还评估了增塑剂在不同温度下在EVA和PVB之间的间相转移。(C) 2017 Wiley期刊公司
We investigated the light transmittance of an immiscible polymer blend comprising a copolymer of ethylene and vinyl acetate (EVA) and a terpolymer of vinyl butyral, vinyl alcohol, and vinyl acetate (PVB). Both EVA and PVB are used in the interlayers of laminated glass. We found that the transparency of the blend depends on the ambient temperature. This can be attributed to the difference in the temperature dependence of the refractive index between EVA and PVB. The blend has good transparency at room temperature because the difference between the refractive indices of its components is minimal. At high or low temperatures, however, the blend becomes opaque owing to light scattering. The addition of a plasticizer favorably affects the temperature range over which the blend exhibits high transparency, because the refractive index and its temperature dependence are affected by the plasticizer. We also evaluated the interphase transfer of a plasticizer between EVA and PVB at various temperatures. (C) 2017 Wiley Periodicals, Inc.