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首页> 外文期刊>Polymer Composites >Effect of gamma-irradiation on the physical properties and dyeability of poly(vinyl butyral) blends with polystyrene and poly(ethylene glycol)
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Effect of gamma-irradiation on the physical properties and dyeability of poly(vinyl butyral) blends with polystyrene and poly(ethylene glycol)

机译：γ辐照对聚乙烯醇缩丁醛与聚苯乙烯和聚乙二醇共混物的物理性能和可染性的影响

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Cast films of polymer blends essentially based on poly(vinyl butyral) (PVB) and equal ratios of polystyrene (PS) and poly(ethylene glycol) (PEG) were prepared from benzene and butyl alcohol solutions of the individual polymers. The effect of gamma-irradiation on the thermal decomposition and tensile mechanical properties was investigated. Moreover, the effect of T-irradiation on the dye affinity of PVB/PS and PVB/PEG for basic and acid dyestuffs was studied. The thermogravimetric analysis (TGA) study showed that the unirradiated PVB polymer films prepared in benzene displayed higher thermal stability than the same polymer films prepared in butanol. However, in all cases the thermal stability was found to increase with increasing gamma-irradiation dose. On the other hand, PVB/PS blend possesses higher thermal stability than PVB/PEG, as shown from the determination of the weight loss (%) at different heating temperatures, the temperatures of the maximum rate of reaction and the activation energy. While, pure PS films showed the stress-strain behavior of brittle polymers, PVB/PS films showed the behavior of tough polymers with yielding properties. The results of dyeing clearly showed that the solvent type, blend composition, and irradiation dose are determining factors for the dye affinity for basic or acid dyes. For example, unirradiated PVB films prepared from butanol displayed a higher affinity for the basic and acid dyes than the same polymer prepared from the same benzene. However, PVB prepared from butanol showed higher affinity to the dyes than PS prepared from the same solvent.
机译：从单个聚合物的苯和丁醇溶液制备基本上基于聚乙烯醇缩丁醛（PVB）以及等比例的聚苯乙烯（PS）和聚乙二醇（PEG）的聚合物共混物的流延膜。研究了γ辐照对热分解和拉伸力学性能的影响。此外，研究了T辐射对PVB / PS和PVB / PEG对碱性和酸性染料的染料亲和力的影响。热重分析（TGA）研究表明，与在丁醇中制备的相同聚合物薄膜相比，在苯中制备的未经辐照的PVB聚合物薄膜显示出更高的热稳定性。然而，在所有情况下，都发现热稳定性随伽马射线辐照剂量的增加而增加。另一方面，从确定不同加热温度下的重量损失（％），最大反应速率的温度和活化能可以看出，PVB / PS共混物具有比PVB / PEG更高的热稳定性。纯PS膜表现出脆性聚合物的应力应变行为，PVB / PS膜表现出具有屈服特性的坚韧聚合物的行为。染色结果清楚地表明，溶剂类型，共混物组成和照射剂量是决定染料对碱性或酸性染料亲和力的因素。例如，由丁醇制备的未经辐照的PVB膜与由相同苯制备的相同聚合物相比，对碱性染料和酸性染料具有更高的亲和力。但是，由丁醇制备的PVB对染料的亲和性高于由相同溶剂制备的PS。

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