Study on Control of Higher Order Structure of Composites by In-situ Polymerization and Their Mechanical Properties

原位聚合控制复合材料高阶结构及其力学性能研究

• 批准号: 13450383
• 负责人: SANUI Kohei
• 金额: $ 3.97万
• 依托单位: Sophia University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450383/
• 关键词: In-situ polymerization; Composite materials; Control of higher order structure; Mechanical properties; Matrix polymer; Reinforcing polymer; Acid-base interaction; Poly(4-vinylpyridine -co-styrene); スチレン共重合体; 相互作用

The purpose of this project is to clarify the relationship between the higher order structure and the mechanical properties of the polymer composites prepared by in-situ polymerization and then to establish a principle of molecular design of nano-composite materials. The following results were obtained in this project.(1)High-performance composites of reinforcing polymers and flexible matrix polymers were prepared by two in-situ polymerization methods : by the in-situ method(I), where polymerization of monomers of reinforcing polymers was carried out in a solution of flexible matrix polymers, and by the in-situ method(II), where polymerization of monomers of flexible matrix polymers was carried out in a solution of reinforcing polymers. The in-situ method(I) was found to give polymer composites with higher tensile strength than the in-situ method(II), because the in-situ method(I) gave much more fine dispersion of reinforcing polymer in the resulting polymer composites.(2)The acid-base interaction was found to be best for preparation of high performance composites of reinforcing polymers and flexible matrix polymers by the in-situ polymerization. Furthermore, the tensile strengths of the composite films prepared by the in-situ polymerization method were much higher than those of the films prepared by the blend method.(3)Free carboxylic acid groups were introduced into side chains of polyimide(PI) in order to improve the mechanical properties of the poly(4-vinylpyridine-co-styrene) (P4VPy-St) and PI composites, and the carboxyl group content dependence of the tensile strength of the resulting composite films was investigated. The tensile strength of the resulting composite films increased with increasing carboxyl group content in PI and was higher than that of either of the individual polymer components.

该项目的目的是阐明原位聚合制备的聚合物复合材料的高阶结构与力学性能之间的关系，进而建立纳米复合材料的分子设计原理。本课题取得了以下成果：(1)采用两种原位聚合方法制备了增强聚合物和柔性基体聚合物的高性能复合材料：原位法(I)是增强聚合物单体在柔性基体聚合物溶液中聚合，原位法(II)是单体在柔性基体聚合物溶液中聚合。 柔性基质聚合物在增强聚合物溶液中进行。研究发现，原位法（I）比原位法（II）得到的聚合物复合材料具有更高的拉伸强度，因为原位法（I）使增强聚合物在所得聚合物复合材料中的分散更加精细。（2）酸碱相互作用被发现最适合通过原位法制备增强聚合物和柔性基体聚合物的高性能复合材料。 聚合。此外，原位聚合法制备的复合薄膜的拉伸强度远高于共混法制备的薄膜。(3)在聚酰亚胺(PI)侧链引入游离羧酸基团，以提高聚(4-乙烯基吡啶-苯乙烯)共聚物(P4VPy-St)和PI复合材料的力学性能，羧基基团 研究了所得复合膜的拉伸强度的含量依赖性。所得复合薄膜的拉伸强度随着 PI 中羧基含量的增加而增加，并且高于任何单个聚合物组分的拉伸强度。

项目成果

Material Science, Organic Polymers

材料科学、有机聚合物

• 发表时间: 2002
• 作者: Toshio Nishi;Kohei Sanui;Akiko Hirakawa
• 通讯作者: Akiko Hirakawa

Synthesis of High-performance Composites of Poly(4-vinylpyridine-co-styrene) Copolymer(P4VPy-St) and Polyimides(PI) Having Carboxyl Pendant Groups by In-situ Polymerization and Their Mechanical Properties

原位聚合合成聚(4-乙烯基吡啶-苯乙烯)共聚物(P4VPy-St)与含羧基聚酰亚胺(PI)的高性能复合材料及其力学性能

• 发表时间: 2004
• 期刊: Polymer Journal 36(10)
• 作者: 浜田 亮他4名

讃井 浩平 他2名: "物質の科学・有機高分子"(財)放送大学教育振興会. 257 (2002)

Kohei Sanui 和其他 2 人：“材料科学/有机聚合物”开放大学教育促进基金会 257 (2002)。

Synthesis of High-performance Composites of Poly(4-vinylpyridine-co-styrene) Copolymer (P4VPy-St) and Polyimides (PI) Having Carboxyl Pendant Groups by in-situ Polymerization and Their Mechanical Properties

原位聚合合成聚(4-乙烯基吡啶-苯乙烯)共聚物(P4VPy-St)与含羧基聚酰亚胺(PI)的高性能复合材料及其力学性能

• 发表时间: 2004
• 期刊: Polymer Journal 36, No.10
• 作者: Ryo Hamada;et al.
• 通讯作者: et al.

Control of Poly(styrene) Particles Size by In-Situ Polymerization

通过原位聚合控制聚苯乙烯粒径

• 发表时间: 2001
• 期刊: Polymer Journal 33
• 作者: Shigeki Chujo;Masayoshi Rikukawa;Kohei Sanui;Naoya Ogata;Satoshi Koizumi;Takeji Hashimoto
• 通讯作者: Takeji Hashimoto