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Investigation of polybenzoxazine gelation using laser light scattering

机译:使用激光散射研究聚苯细胞杂志凝胶化

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The mechanism of phase growth and gelation due to polymerization of benzoxazine into polybenzoxazine (PBZ) in dimethylsulfoxide and N-methyl-2-pyrrolidone was monitored using laser light scattering. The radius of gyration (R-g) and hydrodynamic radius (R-h) increased gradually with time, confirming nucleation and growth as the mechanism of polymerization-induced phase separation of PBZ in both the solvents. The experimental data inferred from laser light scattering and scanning electron microscopy established that the PBZ gel networks were formed by spherical building blocks in dimethylsulfoxide and by cylindrical strands in N-methyl-2-pyrrolidone. In the latter case, the cylindrical strands originated from joining of several spheres. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45709.
机译:使用激光散射监测在二甲基硫氧化物和N-甲基-2-吡咯烷酮中苯并恶嗪聚合引起的相生长和凝胶化的机制。 环状半径(R-G)和流体动力半径(R-H)随时间逐渐增加,确认成核和生长作为PBZ在溶剂中的聚合诱导的相分离机理。 从激光散射和扫描电子显微镜推断的实验数据确定了PBZ凝胶网络是通过二甲基磺酰氧化物的球形积木和N-甲基-2-吡咯烷酮中的圆柱形股线形成的。 在后一种情况下,圆柱形股线源于几个球体的连接。 (c)2017 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2018,135,45709。

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