Crystallization and Higher-Order Structure Formation in Multiphase Polymers - Effects of Microphase Separation -

多相聚合物中的结晶和高阶结构形成 - 微相分离的影响 -

• 批准号: 11450365
• 负责人: SHIOMI Tomoo
• 金额: $ 9.15万
• 依托单位: Nagaoka University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450365/
• 关键词: crystallization; microphase separation; higher-order structure; block copolymer; graft copolymer; spherulite; time-resolved small-angle X-ray scattering; ポリエチレングリコール; ポリ(ε-カプロラクトン); ポリメチルメタクリレート; ミクロ相分離構造; 結晶-非晶構造周期; ポリブタジエン; ポリエチレン; ポリスチレン

(1)Formation of higher-order structure on crystallization from microphase-separated melts was studied for both block copolymers having rubbery and glassy amorphous components, respectively. For the former block copolymers the structure was reorganized on crystallization from lamellar melt, while for the block copolymers having a crystalline component in the cylindrical microdomain they crystallized within the microdomain. On the other hand, the latter block copolymers crystallized within the microdomain regardless of their microphase separation structure, lamella or cylinder. In the crystallization of the latter block copolymers a small Avrami exponent and high apparent activation energy of crystallization were observed. (2) In crystalline-crystalline block copolymers where the melting temperatures of both components are close to each other, one component took priority in crystallization, followed by crystallization of the other component, as a result double spherulites like a concentric circle were formed in the ABA triblock copolymer. (3) Both nucleation densities and growth rates depended on the graft density in crystallization of graft copolymers.

（1）分别研究了具有橡胶态和玻璃态非晶组分的嵌段共聚物从微相分离熔体中结晶时高阶结构的形成。对于前嵌段共聚物的结构重组从层状熔体结晶，而对于嵌段共聚物具有结晶组分的圆柱形微区中，他们结晶的微区内。另一方面，后者的嵌段共聚物结晶的微区内，无论其微相分离结构，片层或圆柱体。在后者的嵌段共聚物的结晶小的Avrami指数和高的表观结晶活化能进行了观察。(2)在结晶-结晶嵌段共聚物中，两种组分的熔融温度彼此接近，一种组分优先结晶，然后另一种组分结晶，结果在阿坝三嵌段共聚物中形成同心圆状的双球晶。(3)接枝共聚物结晶过程中的成核密度和生长速率均依赖于接枝密度。

项目成果

T.Shiomi, K.Imai, K.Takenaka, H.Takeshita, H.Hayashi, Y.Tezuka: "Appearance of double spherulites like concentric circles for poly(ε-caprolactone)-block-poly(ethylene glycol)-block-poly(ε-caprolactone)"Polymer. 42. 3233-3239 (2001)

T.Shiomi、K.Imai、K.Takenaka、H.Takeshita、H.Hayashi、Y.Tezuka：“聚（ε-己内酯）-嵌段-聚（乙二醇）-嵌段-双球晶的外观，如同心圆聚(ε-己内酯)”聚合物。42. 3233-3239 (2001)

T. Shiomi, K. Imai, K. Takenaka, H. Takeshita, H. Hayashi, Y. Tezuka: "Appearance of double spherulites like concentric circles for poly(ε-caprolactone)-block-poly(ethylene glycol)-block-poly(ε-caprolactone)"Polymer. 42. 3233-3239 (2001)

T. Shiomi、K. Imai、K. Takenaka、H. Takeshita、H. Hayashi、Y. Tezuka：“聚（ε-己内酯）-嵌段-聚（乙二醇）-嵌段-双球晶的外观，如同心圆聚(ε-己内酯)”聚合物。42. 3233-3239 (2001)

塩見友雄, 竹下宏樹: "ブロック共重合体の結晶化と高次構造形成"高分子加工. 51・2. 56-62 (2002)

Tomoo Shiomi、Hiroki Takeshita：“嵌段共聚物的结晶和高阶结构形成”51・2（2002）。

塩見 友雄, 竹下 宏樹: "多相系高分子の結晶化と高次構造形成"日本接着学会誌. 38・1. 33-37 (2002)

Tomoo Shiomi、Hiroki Takeshita：“多相聚合物的结晶和高阶结构形成”日本粘合学会杂志38・1（2002）。

T. Shiomi, H. Takeshita: "Crystallization and structure formation of block copolymers"Polymer Applications. 51-No. 2. 56-62 (2002)

T. Shiomi、H. Takeshita：“嵌段共聚物的结晶和结构形成”聚合物应用。