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Development of Hydrophilic Functional Elastomers

亲水性功能弹性体的开发

基本信息

批准号：
01470113
负责人：
YAMASHITA Shinzo
金额：
$ 4.29万
依托单位：
Kyoto Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

Elastomers containing ionic sites (quaternary ammonium salts) and relatively non-polar oxytetramethylene, poly (butadiene), or poly (butadiene-co-acrylonitrile) segments were synthesized and thier properties were investigated. The ionic sites are hydrophilic and the main chains are consisting of hydrophilic and hydrophobic parts, i. E., the elastomers are amphiphilic.The elastomer having poly (oxytetramethylene) segments were prepared from dimethylamino terminated poly (tetrahydrofuran) (AT-PT) and dichloro-p-xylene via the Menschutkin reaction. The resulted PTI is an ionene-type polymer and the film was found to be highly elastic. PTI also showed very good adherence to the Balelite surface.Another type of elastomer was synthesized by living cationic polymerization of tetrahydrofuran followed by the reaction with bipyridine. The resulted viologen elastomer (PTV) showed photochromic and photomechanical properties as well as electrochromism. The tensile properties were also excellent.Both ionene-type elastomers from Poly (Butadiene) (PBV) and poly (butadiene-co-acrylonitrile) (NBRV) contained violgen units, and displayed excellent tensile properties without compounding any reinforcing fillers. Modulus at 100-% elangation and tensile strength were greatly promoted by the increase of viologen units contents.All the elastomers prepared here were ionene-type i. E., containing ionic sites. Thus they swoll with water very much according to their ionic site contents. Due to the presence of polymeric segments they were also hydrophobic, namely they swell with non-polar solvents such as toluene, benzene, chloroform and tetrahydrofuranThe excellent tensile properties of these elastomers were tentatively explained by the presence of hard-segment domains from the ionic clusters.

合成了含有离子位点（季铵盐）和相对非极性的氧四亚甲基、聚（丁二烯）或聚（丁二烯-共-丙烯腈）链段的弹性体，并研究了它们的性能。离子位点是亲水性的，主链由亲水性部分和疏水性部分组成，即。 E.弹性体是两亲性的。具有聚(氧四亚甲基)链段的弹性体由二甲氨基封端的聚(四氢呋喃)(AT-PT)和二氯对二甲苯通过Menschutkin反应制备。所得 PTI 是紫罗烯型聚合物，并且该薄膜具有高弹性。 PTI 还表现出对 Balelite 表面非常好的粘附性。通过四氢呋喃的活性阳离子聚合，然后与联吡啶反应，合成了另一种类型的弹性体。所得紫罗碱弹性体（PTV）表现出光致变色、光机械性能以及电致变色性能。拉伸性能也非常出色。聚丁二烯（PBV）和聚（丁二烯-丙烯腈）（NBRV）两种紫罗烯型弹性体都含有紫罗根单元，并且在不复合任何增强填料的情况下表现出优异的拉伸性能。紫罗碱单元含量的增加极大地提高了100%伸长率和拉伸强度。这里制备的所有弹性体都是紫罗烯型i。 E.，含有离子位点。因此，根据其离子位点含量，它们遇水膨胀程度非常高。由于聚合物链段的存在，它们也是疏水性的，即它们会在甲苯、苯、氯仿和四氢呋喃等非极性溶剂中溶胀。这些弹性体优异的拉伸性能初步解释为离子簇中硬链段域的存在。