PROBLEM TO BE SOLVED: To provide a gel material which can respond to human body temperature with good sensitivity and speedily control release of an inclusion material, and which can secure a sufficient controlled release amount.SOLUTION: Provided is a temperature-responsive polyrotaxane gel, where (A) a molecular chain of the polyrotaxane is (a1) a molecule having a linear molecule and the like as a main chain, (a2) has a structure where the main chain is included in cyclic molecules which become dynamic crosslinking points, and is (a3) a molecule having blocking groups added at molecular terminals of the main chain (B) the polyrotaxane molecular chains described in the (A) have a network structure formed by crosslinking the molecular chains with each other with the cyclic molecules described in the (a2) serving as the crosslinking points and (C) in a molecular structure derived from crosslinking agent which connect the crosslinking points described in the (B), a structure is provided where acryl amide or methacryl amide, which when polymerized alone has a lower limit critical solution temperature (LCST) in a range of 33.5 to 40°C, is bonded.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 ヒト体温の発熱温度帯に感度良く応答して内包物質の急激な徐放制御が可能であり且つ徐放量の十分な確保が可能なゲル素材を提供することを課題とする。【解決手段】 ポリロタキサンゲルであって、(A)前記ポリロタキサン分子鎖が(a1)直鎖状分子等を主鎖としてなる分子であって、(a2)前記主鎖が動的架橋点となる環状分子に包接された構造を有し、且つ、(a3)前記主鎖の分子末端に封鎖基が付加された分子であって、(B)前記(A)に記載のポリロタキサン分子鎖どうしが前記(a2)に記載の環状分子を架橋点として架橋されてなるネットワーク構造を有し、(C)前記(B)に記載の架橋点を結ぶ架橋剤由来の分子構造中に、単独重合時の下限臨界共溶温度(LCST)が33.5~40℃の範囲にあるいずれかの温度であるアクリルアミド類又はメタクリルアミド類が結合された構造を有する、ことを特徴とする温度応答性ポリロタキサンゲル。【選択図】 図1
