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首页> 外文期刊>Journal of Applied Polymer Science >PREPARATION AND SOLUTION PROPERTIES OF IONOMER ORIGINATED FROM STYRENE-COUMARIN COPOLYMER
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PREPARATION AND SOLUTION PROPERTIES OF IONOMER ORIGINATED FROM STYRENE-COUMARIN COPOLYMER

机译：苯乙烯-香豆素共聚物的离聚物的制备及固溶性能

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摘要

A novel ionomer was successfully prepared by lactone ring opening of styrene-coumarin copolymer, containing 9.28 mol % of coumarin, with aqueous NaOH solution. Its solution properties in methanol, including reduced viscosity and surface tension, were investigated as a function of temperature, concentration, and pH value. The reduced viscosities of the ionomer solution decrease smoothly with increasing temperature and concentration. Moreover, the viscosities of the ionomer solution (0.3 g/dL, MeOH) are ca. twofold of the copolymer solution (0.3 g/dL THF) between 25 and 45 degrees C. It increases from ca. 0.14 to 0.59 dL/g as pH Value decreases from 10.6 to 6, then decreases slightly and reaches a constant value of 0.47 dL/g below pH 4.7. The surface tension of methanol solution decreases with increasing concentration and reaches an asymptotic value of 24.1 dyne/cm as the concentration is above 0.50 g/dL due to the surface-active effects. These properties can be related to the balance between hydrogen bonding and charge-charge interactions that occur along the ionomer backbone. (C) 1995 John Wiley & Sons, Inc. [References: 28]
机译：通过用NaOH水溶液使包含9.28mol％香豆素的苯乙烯-香豆素共聚物的内酯开环成功地制备了新型离聚物。研究了其在甲醇中的溶液性质，包括降低的粘度和表面张力，随温度，浓度和pH值的变化。离聚物溶液的降低的粘度随温度和浓度的增加而平滑地降低。此外，离聚物溶液的粘度（0.3 g / dL，MeOH）为。在25至45摄氏度之间，共聚物溶液（0.3 g / dL THF）的浓度增加了两倍。当pH值从10.6降至6时，0.14至0.59 dL / g，然后略有降低，并在pH 4.7以下达到0.47 dL / g的恒定值。甲醇溶液的表面张力随着浓度的增加而降低，由于表面活性效应，当浓度高于0.50 g / dL时，其表面张力逐渐达到24.1达因/厘米。这些性质可能与氢键和沿着离聚物主链发生的电荷-电荷相互作用之间的平衡有关。 （C）1995 John Wiley＆Sons，Inc. [参考：28]

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