Comparison of Properties among Dendritic and Hyperbranched Poly(ether ether ketone)s and Linear Poly(ether ketone)s
作者:Atsushi Morikawa
DOI:10.3390/molecules21020219
日期:——
ketone)s having the same hydroxyl groups in the side chains as the chain ends of the dendrimer and hyperbranched polymers. Their properties, such as solubilities, reduced viscosities, and thermal properties, were compared with one another. Similar comparisons were also carried out among the corresponding methoxy group polymers, and the size of the molecules was shown to affect the properties.
3,5-二甲氧基-4'-(4-氟苯甲酰基)二苯醚和3,5-二羟基-4'-(4-氟苯甲酰基)二苯醚通过芳香亲核取代制备聚醚醚酮树枝状聚合物和超支化聚合物反应。1-(叔丁基二甲基甲硅烷氧基)-3,5-双(4-氟苯甲酰基)苯与双酚缩聚,然后保护基裂解形成线性聚(醚酮),在侧链中具有相同的羟基树枝状聚合物和超支化聚合物的链端。将它们的特性,例如溶解度、降低的粘度和热特性相互比较。在相应的甲氧基聚合物之间也进行了类似的比较,结果表明分子的大小会影响性能。