The average film thickness T0 on the straight line D passing through the center of gravity of the two-dimensional projection diagram having the largest area satisfies the equation (a), the average value L of the distance l from the center of gravity to the edge portion satisfies the equation (b), and Young A polymer film characterized in that the rate E satisfies the formula (c) and the thickness deviation rate Δ defined by the formula (d) satisfies the formula (e), and a dispersion and an aggregate using the polymer film . (A) 10 nm ≦ T0 ≦ 1000 nm, (b) 0.1 μm ≦ L ≦ 500 μm, (c) 0.01 GPa ≦ E ≦ 4.3 GPa, (d) Δ = 1−T1 / T2, (e) 0.346E * 10-9-1.499 <；[Delta] <；-0.073E * 10-9 + 0.316. A polymer film that is easy to handle and excellent in followability, covering property, adhesiveness, and adhesion to organ tissue, and a dispersion and an aggregate using the same can be provided.面積が最大となる二次元投影図の重心を通る直線Ｄにおける平均膜厚Ｔ０が式（ａ）を満たし、重心から辺縁部までの距離ｌの平均値Ｌが式（ｂ）を満たし、ヤング率Ｅが式（ｃ）を満たし、かつ式（ｄ）で定義される厚みの偏差率Δが式（ｅ）を満たすことを特徴とする高分子膜、及びそれを用いた分散液と集積体。（ａ）１０ｎｍ≦Ｔ０≦１０００ｎｍ、（ｂ）０．１μｍ≦Ｌ≦５００μｍ、（ｃ）０．０１ＧＰａ≦Ｅ≦４．３ＧＰａ、（ｄ）Δ＝１－Ｔ1／Ｔ2、（ｅ）０．３４６Ｅ×１０－９－１．４９９＜Δ＜－０．０７３Ｅ×１０－９＋０．３１６。取り扱いが容易であり、臓器組織に対する追従性、被覆性、貼付性、密着性に優れた高分子膜及びそれを用いた分散液と集積体を提供できる。
