Structure and Physical Properties of Polymers at Nanoscale Interface with Liquids

聚合物与液体纳米级界面的结构和物理性质

• 批准号: 21685013
• 负责人: TANAKA Keiji
• 金额: $ 17.39万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21685013/
• 关键词: 高分子構造; 高分子物性; 高分子薄膜・表面; 高分子; 界面; 分子鎖熱運動性; 膨潤; 非溶媒; ダイナミクス; 界面濃縮; ポリメタクリル酸メチル; χパラメータ; 中性子反射率

Thermal molecular motion of poly(methyl methacrylate)(PMMA) at various interfaces, gases and liquids, was discussed. Theαa-andβ-relaxation processes were clearly observed even at the air interface. Both relaxation temperatures at the air interface were lower than the corresponding ones in the bulk. In addition, the extent to which the peak temperature for the surface relaxation processes fell below that of the bulk strongly depended on the stereoregularity of the films. Then, mechanical properties of PMMA were also studied at interfaces with liquids such as water, hexane and methanol. The modulus decreased closer to the outermost region of the film. The extent to which the modulus decreased in the interfacial region was consistent with the amount of liquid sorbed into the film. Therefore, it can be claimed that interfacial molecular motion of polymers can be regulated on the basis of the aggregation states.

讨论了聚甲基丙烯酸甲酯(PMMA)在不同界面、气体和液体中的热分子运动。即使在空气界面上也能清楚地观察到αα-和β-松弛过程。空气界面的松弛温度均低于块体中相应的松弛温度。此外，表面弛豫过程的峰值温度降至体相温度以下的程度强烈依赖于薄膜的立体规整性。在此基础上，研究了PMMA与水、正己烷、甲醇等液体界面的力学性能。在薄膜最外层附近，弹性模数减小。界面区弹性模数的降低程度与膜中液体的吸入量一致。因此，可以说，聚合物的界面分子运动可以根据聚集态进行调节。

项目成果

液体界面における高分子の非平衡構造

液体界面聚合物的非平衡结构

• 发表时间: 2011
• 作者: 荒船博之;堀田一海;山口央;寺前紀夫;田中亮・山下誠・野崎京子;Yasuhiro Morisaki;田中敬二
• 通讯作者: 田中敬二

15章異種固体におけるガラス転移温度、高分子表面・界面分析法の新展開

第15章 异种固体的玻璃化转变温度，聚合物表面/界面分析方法的新进展

• 发表时间: 2009
• 作者: 田中敬二;長村利彦
• 通讯作者: 長村利彦

A Novel Approach for Surface Hardening of Soft Materials

软材料表面硬化的新方法

• 发表时间: 2012
• 作者: Hirofumi Tsuruta;Keiji Tanaka
• 通讯作者: Keiji Tanaka

Surface Segregation of Fluorinated Hyper-branched Polymer in Linear Polymer Matrix

线性聚合物基体中氟化超支化聚合物的表面偏析

• 发表时间: 2010
• 作者: O. Shoji;Y. Watanabe;Hideaki Shirota;Keiji Tanaka
• 通讯作者: Keiji Tanaka

分析方法、及び分析装置

分析方法及分析装置

• 发表时间: 2019