Uhlig D, Spange S, Seifert A, Nagel K, Anders S, Kroll L, Stoll R, Thielbeer F, Müller P, Schreiter K
Department of Polymer Chemistry, Chemnitz University of Technology, Faculty of Natural Science D-09107 Chemnitz Germany
Department of Lightweight Structures and Polymer Technology, Chemnitz University of Technology, Faculty of Mechanical Engineering D-09107 Chemnitz Germany.
RSC Adv. 2018 Sep 12;8(55):31673-31681. doi: 10.1039/c8ra05310c. eCollection 2018 Sep 5.
Organic-inorganic hybrid materials with urethane functionalities were obtained by simultaneous twin polymerization of twin prepolymers in combination with the ideal twin monomer 2,2'-spirobi[4-1,3,2-benzodioxasiline]. The twin prepolymers consist of a urethane-based prepolymer with reactive terminal groups which can react during the twin polymerization process. Nanostructured hybrid materials with integrated dialkylsiloxane crosslinked urethane structures, phenolic resin and SiO are obtained in a one pot process. The effects of the polymerization temperature as well as those of various catalysts and reagent ratios on the polymerization behavior were investigated. The molecular structures of the obtained materials were determined by C- and Si-{H}-CP-MAS NMR spectroscopies. HAADF-STEM-measurements were performed to prove the distribution of silicon in the hybrid material.
通过双预聚物与理想双单体2,2'-螺双[4H-1,3,2-苯并二氧杂硅烷]的同时双聚合反应，制备了具有聚氨酯官能团的有机-无机杂化材料。双预聚物由具有反应性端基的聚氨酯基预聚物组成，该端基可在双聚合过程中发生反应。通过一锅法制备了具有集成二烷基硅氧烷交联聚氨酯结构、酚醛树脂和SiO的纳米结构杂化材料。研究了聚合温度以及各种催化剂和试剂比例对聚合行为的影响。通过C-和Si-{H}-CP-MAS NMR光谱确定了所得材料的分子结构。进行了高角度环形暗场扫描透射电子显微镜（HAADF-STEM）测量，以证明硅在杂化材料中的分布。
