Crystollization and Morphology Central of Polymer Chains in a Nanoscale space

纳米尺度空间中聚合物链的结晶和形态中心

• 批准号: 09650992
• 负责人: NOJIMA Shuichi
• 金额: $ 2.11万
• 依托单位: Japan Advanced Institute of Science and Technology (JAIST)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650992/
• 关键词: Crystalline-Amorphous Diblock Copolymer; Crystallization; Microdomain Structure; Lamellar Morphology; Morphological Control; 結晶性-非晶性ブロック共重合体; 結晶化過程; 融解過程; 結晶性ー非晶性ブロック共重合体

We have investigated the process of morphological reorganization (crystallization process and melting process) and final morphology for various crystalline-amorphous diblock copolymers and their blends with homopolymers in order to establish the method of morphological control in polymer alloys. The results are summarized as follows :(1) We have found that the final morphology of poly(epsilon -caprolactone)-block-polybutadiene (PCL-b-PB)/poly(epsilon -caprolactone) depends strongly on the phase structure in the melt.(Polymer Journal, 29, 642 (1997))(2) We explained the morphology of poly(epsilon -caprolactone)-block-polystyrene (PCL-b-PS) on the basis of the glass transition temperature Tg of the amorphous block, where the crystallizabiity of the constituent block depends significantly on Tg. (Polymer, 39, 1727 (1998))(3) We investigated qualitatively the melting process of PCL-b-PB by time-resolved small-angle X-ray scattering (SAXS) with synchrotron radiation. The results were compared with the crystallization process of PCL-b-PB and the melting process of crystalline homopolymers, It was found that the melting process of PCL-b-PB was extremely unique. (Polymer Journal, 30, 628 (1998))(4) The morphology formed in PCL- b-PS was investigated by SAXS as a function of the composition in the copolymer, It was found that the crystallinity and final morphology depends intimately on the copolymer composition. (Polymer Journal 30, 968 (1998))(5) We investigated quantitatively the melting process of PCL-b-PB under various conditions and tried to find the melting mechanism in crystalline-amorphous block copolymers, It was found that two factors, nonequilibrium crystallization at Tc and conformational competition between crystalline and amorphous blocks, were important for the melting of PCL-b-PB.(Macromolecules, in press (1999))

为了建立聚合物合金的形态控制方法，我们研究了各种结晶-非晶二嵌段共聚物及其与均聚物的共混物的形态重组过程（结晶过程和熔融过程）和最终形态。结果表明：（1）聚己内酯嵌段聚丁二烯（PCL-b-PB）/聚己内酯共混物的最终形态与熔体中的相结构密切相关。（Polymer Journal，29，642（1997））（2）我们基于无定形嵌段的玻璃化转变温度Tg解释了聚（ε-己内酯）-嵌段-聚苯乙烯（PCL-b-PS）的形态，其中组成嵌段的结晶性显著地取决于Tg。（Polymer，39，1727（1998））（3）用同步辐射时间分辨小角X射线散射（SAXS）定性研究了PCL-b-PB的熔融过程。与PCL-b-PB的结晶过程和结晶性均聚物的熔融过程进行了比较，发现PCL-b-PB的熔融过程非常独特。（Polymer Journal，30，628（1998））（4）通过SAXS研究了在PCL-b-PS中形成的形态作为共聚物组成的函数。发现结晶度和最终形态密切依赖于共聚物组成。（Polymer Journal 30，968（1998））（5）定量研究了PCL-b-PB在不同条件下的熔融过程，并试图寻找结晶-非晶嵌段共聚物的熔融机理。发现在Tc下的非平衡结晶和结晶-非晶嵌段之间的构象竞争是影响PCL-b-PB熔融的重要因素。（《大分子》，出版中（1999年））

项目成果

S.Nojima: "Melting Behavior of Poly(ε-caprolactone)-block-Polybutadiene Copolymers." Macromolecules. (印刷中). (1999)

S. Nojima：“聚（ε-己内酯）-嵌段聚丁二烯共聚物的熔融行为”（正在出版）。

S.Nojima: "Time-Resolved Small-Angle X-ray Scattering Studies on the Melting Behavior of Poly(ε-caprolactone)-block-Polybutadiene Copolymers." Polymer Journal. 30(8). 968-975 (1998)

S. Nojima：“聚(ε-己内酯)-嵌段-聚丁二烯共聚物熔融行为的时间分辨小角 X 射线散射研究”，30(8) (1998)。

野瀬卓平: "新高分子実験学第6巻 高分子の構造" 高分子学会, 579 (1997)

Takuhei Nose：《新聚合物实验第 6 卷：聚合物的结构》高分子科学学会，579（1997）

S.Nojima et.al.: "Time-Resolved Small-Angle X-ray Scattering Studies on the Melting Behavior of Poly- (epsilon-caprolactone) -block-Polybutadiene Copolymers" Polymer Journal. 30 (8). 628-634 (1998)

S.Nojima 等人：“聚（ε-己内酯）-嵌段聚丁二烯共聚物熔融行为的时间分辨小角 X 射线散射研究”聚合物杂志。

S.Nojima: "Morphology Formation in Crystalline-Amorphous Block Copolymers" Sen'i Gakkaisi. 55 (1). 9-13 (1999)

S.Nojima：“结晶-无定形嵌段共聚物的形态形成”Seni Gakkaisi。