Provided are a vinyl ether polymer which can exert temperature responsiveness even in the case of being supported on a highly hydrophobic fibrous substrate, an agent for controlling hydrophilicity and hydrophobicity containing the polymer, a method for controlling hydrophilicity and the hydrophobicity using the polymer, and a polymer-substrate composite having the polymer supported on a substrate.
A star-shaped vinyl ether polymer which includes a central core and an arm portion bonded to the central core and in which the arm portion includes a repeating unit derived from a vinyl ether monomer and a structure represented by the following Formula (1) is included in the molecule:
-Y-Ar1-N=N-Ar2 (1)
i in which Y represents an ether bond, a thioether bond, a group -NH-, or a group -OR1-* (R1 represents an alkylene group, * represents a position bonded to Ar1 in Formula (1)), Ar1 represents a substituted or unsubstituted divalent aromatic hydrocarbon group, and Ar2 represents a substituted or unsubstituted monovalent aromatic hydrocarbon group].
本发明提供了一种即使被支撑在高疏
水性纤维基材上也能发挥温度响应性的
乙烯基醚
聚合物、一种含有该
聚合物的控制亲
水性和疏
水性的制剂、一种使用该
聚合物控制亲
水性和疏
水性的方法,以及一种将该
聚合物支撑在基材上的
聚合物-基材复合材料。
星形
乙烯基醚
聚合物包括中心芯和与中心芯粘合的臂部分,其中臂部分包括由
乙烯基醚单体衍生的
重复单元,分子中包含由下式(1)表示的结构:
-Y-Ar1-N=N-Ar2 (1)
i 其中 Y 代表醚键、
硫醚键、基团-NH-或基团-OR1-*(R1 代表亚烷基,*代表与式(1)中 Ar1 键合的位置),Ar1 代表取代或未取代的二价
芳烃基团,Ar2 代表取代或未取代的一价
芳烃基团]。