Alam Maksudul M, Biswas Bidyut, Nedeltchev Alexi K, Han Haesook, Ranasinghe Asanga D, Bhowmik Pradip K, Goswami Kisholoy
InnoSense LLC, 2531 West 237th Street, Torrance, CA 90505, USA.
Department of Chemistry and Biochemistry, University of Nevada Las Vegas, 4505 Maryland Parkway Box 454003, Las Vegas, NV 89154-4003, USA.
Polymers (Basel). 2019 Jul 3;11(7):1141. doi: 10.3390/polym11071141.
Six new rugged, high-temperature tolerant phosphine oxide-containing poly(4,4'-(-phenylene)-(2,6-diphenylpyridinium)) polymers , , , , , and are synthesized, characterized, and evaluated. Synthesis results in high yield and purity, as confirmed by elemental, proton (H), and carbon 13 (C) nuclear magnetic resonance (NMR) spectra analyses. High glass transition temperatures ( > 230 °C) and high char yields (>50% at 700 °C) are determined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. These new ionic polymers exhibit excellent processability, thin-film forming, high-temperature resistance, fire-resistance and retardation, coating, adhesion, mechanical and tensile strength, and n-type (electron transport) properties. The incorporation of phosphine oxide and bis(phenylpyridinium) moieties in the polymer backbones leads to high glass transition temperatures and excellent fire retardant properties, as determined by microcalorimetry measurements. The use of organic counterions allows these ionic polymers to be easily processable from several common organic solvents. A large variety of these polymers can be synthesized by utilizing structural variants of the bispyrylium salt, phosphine oxide containing diamine, and the counterion in a combinatorial fashion. These results make them very attractive for a number of applications, including as coating and structural component materials for automobiles, aircrafts, power and propulsion systems, firefighter garments, printed circuit boards, cabinets and housings for electronic and electrical components, construction materials, mattresses, carpets, upholstery and furniture, and paper-thin coatings for protecting important paper documents.
合成、表征并评估了六种新型坚固、耐高温的含氧化膦聚（4,4'-（-亚苯基）-（2,6-二苯基吡啶鎓））聚合物，即聚合物1、聚合物2、聚合物3、聚合物4、聚合物5和聚合物6。元素分析、质子（H）和碳13（C）核磁共振（NMR）光谱分析证实，合成反应具有高产率和高纯度。分别通过差示扫描量热法（DSC）和热重分析（TGA）测定了高玻璃化转变温度（>230°C）和高残炭率（700°C时>50%）。这些新型离子聚合物表现出优异的加工性能、成膜性、耐高温性、耐火性和阻燃性、涂层性能、附着力、机械强度和拉伸强度以及n型（电子传输）性能。微量量热法测量结果表明，聚合物主链中引入氧化膦和双（苯基吡啶鎓）部分可导致高玻璃化转变温度和优异的阻燃性能。使用有机抗衡离子使这些离子聚合物能够很容易地从几种常见的有机溶剂中进行加工。通过组合使用双吡啶盐、含氧化膦二胺和抗衡离子的结构变体，可以合成多种此类聚合物。这些结果使其在许多应用中极具吸引力，包括用作汽车、飞机、动力和推进系统、消防员服装、印刷电路板、电子和电气部件的机柜和外壳、建筑材料、床垫、地毯、内饰和家具的涂层和结构部件材料，以及用于保护重要纸质文件的超薄涂层。
