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首页> 外文期刊>Journal of Applied Polymer Science >Effect of boric acid treatment method on the characteristics of poly(vinyl alcohol)/iodine polarizing film
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Effect of boric acid treatment method on the characteristics of poly(vinyl alcohol)/iodine polarizing film

机译：硼酸处理方法对聚乙烯醇/碘偏振膜特性的影响

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摘要

Four types of polyvinyl alcohol (PVA)/iodine complex films were made using different boric acid treatments to prepare polarizing films having high durability under humid and warm atmospheres and to identify the effects of the boric acid treatment method on the formation of the PVA/iodine polarizing film. The four types of films were a PVA iodinated film(I), a PVA film that was iodinated and then treated with boric acid(I-B), a PVA film that was treated with boric acid and then iodinated(B-I), and a PVA film that was simultaneously treated with iodine and boric acid(I+B). The concentrations of I_2/KI were 0.03, 0.05, and 0.07 mol/L, and the concentrations of boric acid were 0.1, 0.3, and 0.5 mol/L. Comparing four type films treated with 0.05 mol/L I _2/KI and 0.5 mol/L boric acid, the conformation of PVA/iodine complexes for I-B film were larger than the others. The degrees of polarization (?) of all of the films increased to very high levels (99.9%a). The durability of I-B was superior to B-I or I+B, and the change in the ? was below 5% because the boric acid treated after iodine treatment reduced the molecular mobility of the PVA/iodine complex chains through intracrosslinking, so that the PVA/iodine complex could not easily collapse.
机译：使用不同的硼酸处理方法制得四种类型的聚乙烯醇（PVA）/碘复合膜，以制备在潮湿和温暖的气氛下具有高耐久性的偏振膜，并确定硼酸处理方法对PVA /碘形成的影响偏光膜。四种类型的膜是PVA碘化膜（I），先进行碘化然后再用硼酸（IB）处理的PVA膜，先用硼酸然后再进行碘化（BI）的PVA膜和PVA膜同时用碘和硼酸（I + B）处理。 I_2 / KI的浓度为0.03、0.05和0.07mol / L，硼酸的浓度为0.1、0.3和0.5mol / L。比较用0.05 mol / L I _2 / KI和0.5 mol / L硼酸处理的四种类型薄膜，I-B薄膜的PVA /碘配合物的构象要大。所有薄膜的偏振度（η）增加到非常高的水平（99.9％a）。 I-B的耐用性优于B-I或I + B，并且α的变化碘低于5％是因为碘处理后的硼酸通过内部交联降低了PVA /碘复合物链的分子迁移率，因此PVA /碘复合物不易崩解。

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