CONTROL OF SURFACE POLARITY AND POTENTIAL OF MONODISPERESE INORGANIC COLLOIDAL PARTICLES BY POL YMER MODIFICATION

聚合物改性控制单分散无机胶体颗粒的表面极性和电位

• 批准号: 08640745
• 负责人: YOSHINAGA Kohji
• 金额: $ 1.34万
• 依托单位: KYUSHU INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640745/
• 关键词: Monodisperse colloidal paritcles; Colloidal silica; Surface modification; Polymer coupling agent; Zeta-potential; Surface polarity; Polymer complex; Polymer elecrolyte; コロイダルシリカ

1. Surface modification with polymer-silane coupling agent containing maleic anhydride moietyThe reaction of monodisperse colloidal silica with copolymer-silane coupling agent prepared from maleic anhydride in 1,2-dimethoxyethane afforded monodisperse composite particles in the size range from 10nm to 1mum.2. Control of surface polarity and potential by bindings of secondary polymerThe bindings of the secondary polymer to the above composite particles enabled to control the surface polarity. The introduction of the polymer electrolyte as a secondary polymer made controlling of zeta-potential of the composite particles from-110 mV to +65 mV possible.3. Bindings of polymer complexes and properties of the compositesTne composite particles bound the temperature-responded polymer, poly (N-isopropylacrylamide), grafted 2,2'-bipyridyl groups to monodisperse colloidal silica (l20 nm) gave the quauntitative coordination of Fe (II), Co (II), Ni(II), Zn(II), and Ru(III) ion. These particles aggregated due to the ligand exchange among particles above the transition temperature of the polymer.Formation of colloid crystalIt is found out that poly (maleic anhydride-stirene)-modified silica particles (120-500nm) formed the colloid crystal around the volume fraction of 0.010-0.02 in a polar and good solvent for the polymer, such as acetonitrile or acetone.

1。用含有甲基酸酐部分的聚合物 - 硅烷耦合剂进行表面修饰，单分散胶体二氧化硅与共聚物 - 硅烷 - 硅烷偶联剂在1,2-二甲氧基乙烷中制备的共聚物 - 硅烷偶联剂，可提供10nm至1mum.2的尺寸范围内的单二氧化烷的复合颗粒。通过二级聚合物的结合控制表面极性和电势，次级聚合物与上述复合颗粒的结合能够控制表面极性。将聚合物电解质作为二次聚合物的引入，从而控制了复合颗粒的Zeta势从11 mV到+65 mV。聚合物复合物的结合和综合复合颗粒的特性结合温度响应的聚合物聚（N-异丙基丙烯酰胺），嫁接了2,2'-双吡啶基团与单分散胶体硅（L20 nm）的结合，从 离子。这些颗粒由于配体在聚合物的过渡温度上方的颗粒之间汇总而聚集。发现胶体晶体的形式表明，在0.010-0.02的体积分数周围形成了胶体晶体周围的胶体晶体（120-500nm）在polarial and和colilet coligrilet中，形成了胶体晶体围绕胶体晶体构成胶体晶体的胶合物或良好的溶剂。

项目成果

Akihiko Kondo: "Adsorption,Activity and Conformation of α-Amylase on Various Ultrafine Particles Modified with Polymer Silane Coupling Agents" Colloids and Surfaces A. 109. 129-136 (1996)

Akihiko Kondo：“α-淀粉酶在用聚合物硅烷偶联剂修饰的各种超细颗粒上的吸附、活性和构象”胶体和表面 A. 109. 129-136 (1996)

K.Yoshinaga: "Capability of polymer-modified monodisperse calloidal silica particles as biomaterial carrier" Colloid and Polymer Science. (掲載決定).

K. Yoshinaga：“聚合物改性单分散胶状二氧化硅颗粒作为生物材料载体的能力”《胶体与聚合物科学》（已出版）。

Kohji Yoshinaga: "Bindings of Viologen Oligomer to Monodisperse Colloidal Silica Particles Modified with Poly (maleic anhydride-stirene) for Controlling Surface zeta-Potential" Composite Interfaces. (in press).

Kohji Yoshinaga：“紫罗碱低聚物与聚（马来酸酐-苯乙烯）改性的单分散胶体二氧化硅颗粒的结合，用于控制表面 zeta 电位”复合界面。

Kohji Yoshinaga: "Thermally Responded Self-Aggregation of Ultrafine Particles Prepared by Modification of Monodisperse Colloidal Silica with Iron(II)-Bipyridyl Broched Polymer" Chemistry Letlers. 11号. 1111-1112 (1997)

Kohji Yoshinaga：“用铁 (II)-联吡啶溴化聚合物改性单分散胶体二氧化硅制备的超细颗粒的热响应自聚集”化学快报第 11 号。1111-1112 (1997)。

Kohji Yoshinaga: "Capabilities of Polymer-Modified Monodisperse Colloidal Silica Particles as Biomaterial Carrier" Colloid and Polymer Science. Vol.275. 220-226 (1997)

Kohji Yoshinaga：“聚合物改性单分散胶体二氧化硅颗粒作为生物材料载体的能力”胶体与聚合物科学。