Studies on Crystallization Behavior and Final Morphology of ABA-type Triblock copolymers

ABA型三嵌段共聚物的结晶行为和最终形貌研究

• 批准号: 12650879
• 负责人: NOJIMA Shuichi
• 金额: $ 2.3万
• 依托单位: Tokyo Institute of Technology (2001)Japan Advanced Institute of Science and Technology (2000)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650879/
• 关键词: AB-type Diblock Copolymer; ABA-type Triblock Copolymer; Microdomain Structure; Crystallization; Morphology Formation; Final Morphology; Small-Angle X-ray Scattering; Synchrotron Radiation; ABA3元ブロック共重合体; AB2元ブロック共重合体; 高次構造形成; 高次構造; 分子量; 組成

The research results can be summarized as follows : (1) effects of molecular characteristics and crystallization conditions on the crystallization behavior and final morphology of AB-type block copolymers, (2) synthesis, purification, and characterization of ABA-type block copolymers, and (3) evaluation of crystallization behavior and final morphology of ABA-type block copolymers.(1) We synthesized various ε-caprolactone-block-butadiene diblock copolymers (PCL-b-PB) with different molecular weights and compositions, and observed the final morphology as a function of molecular characteristics and crystallization conditions. We could obtain different morphologies by controlling these factors.(2) PCL-b-PB-b-PCL triblock copolymers were synthesized by a successive anionic polymerization with tetramethylene dilithium as an initiator/ We finally obtained pure PCL-b-PB-b-PCL copolymers after purifying with GPC.(3) The crystallization behavior and final morphology of PCL-b-PB-b-PCL copolymers were dependent on the conformation of the constituent block copolymers as well as the pre-existing microdomain structure. That is, the crystallization behavior of ABA-type copolymers is more complicated than that of AB-type diblock copolymers.

研究结果如下：(1)分子特征和结晶条件对AB型嵌段共聚物结晶行为和最终形态的影响，(2)ABA型嵌段共聚物的合成、纯化和表征，以及(3)ABA型嵌段共聚物的结晶行为和最终形态的评价。(1)合成了不同相对分子质量和组成的ε-己内酯-丁二烯二嵌段共聚物(PCL-b-PB)，观察了最终形态随分子特征和结晶条件的变化。(2)以四甲撑二锂为引发剂，通过连续阴离子聚合反应合成了PCL-b-PB-b-PCL三嵌段共聚物。(3)PCL-b-PB-b-PCL三嵌段共聚物的结晶行为和最终形态取决于组成嵌段共聚物的构象和原有的微区结构。也就是说，ABA型共聚物的结晶行为比AB型嵌段共聚物的结晶行为更加复杂。

项目成果

野島修一(分担): "ポリマーABCハンドブック アロイ化による構造制御"エヌ・テイ・エス. 10 (2001)

Shuichi Nojima（撰稿人）：《聚合物 ABC 合金结构控制手册》NTS 10 (2001)。

A. Rohadi, R. Endo, S. Tanimoto, S. Sasaki, and S. Nojima: "Effects of Molecular Weight and Crystallization Temperature on the Morphology Formation in Asymmetric Diblock Copolymers"Polymer Journal. 32(7). 602-609 (2000)

A. Rohadi、R. Endo、S. Tanimoto、S. Sasaki 和 S. Nojima：“分子量和结晶温度对不对称二嵌段共聚物形态形成的影响”聚合物杂志。

S. Tanimoto and S. Nojima: "Crystallization Behavior and Final Morphology of Crystalline-Amorphous Diblock Copolymers"Polymer Applications. (in press).

S. Tanimoto 和 S. Nojima：“结晶-无定形二嵌段共聚物的结晶行为和最终形态”聚合物应用。

S. Nojima: "Morphological Control by Alloying"Polymer ABC Handbook. (2001)

S. Nojima：“合金形态控制”聚合物 ABC 手册。

A.Rohadi, S.Tanimoto, S.Sasaki, S.Nojima: "Morphological Difference between Solution-Cast and Melt-Quenched Ciystalline-Amorphous Diblock Copolymers"Polymer Journal. 32(10). 859-865 (2000)

A.Rohadi、S.Tanimoto、S.Sasaki、S.Nojima：“溶液浇铸和熔融淬火结晶-无定形二嵌段共聚物之间的形态差异”聚合物杂志。