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Phase behaviors of side chain liquid crystalline block copolymers

机译：侧链液晶嵌段共聚物的相行为

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摘要

The microphase separation of side chain liquid crystalline (SCLC) block copolymers was studied using dissipative particle dynamics (DPD) simulations. The block copolymer monomer consists of flexible A segments and flexible B segments grafted by rigid C side chains, where the A, B and C blocks are incompatible with each other. The phase structures of the SCLC copolymers were found to be controlled by A and C block lengths and the graft number. Various mesophases, such as spheres, cylinders, gyroids, and lamellae, were obtained. Phase stability regions in the space of C block length and A block length (or graft number and A block length) were constructed. The packing ordering of C side chains was also studied, and discovered to increase as the temperature decreases or the rigid C side chains increase. In addition, the results of the SCLC copolymers were compared with those of flexible copolymers and available experimental observations. The simulation results in the present work provide useful information for future investigations on SCLC copolymers.
机译：使用耗散粒子动力学（DPD）模拟研究了侧链液晶（SCLC）嵌段共聚物的微相分离。嵌段共聚物单体由柔性的段和柔性B段由刚性C侧链移植，其中A，B和C块彼此不相容。发现SCLC共聚物的相结构由A和C嵌段长度和移植物数控制。获得各种中间蛋白酶，例如球体，圆柱体，陀螺菌和薄片。构建了C块长度的空间中的相位稳定性区域和块长度（或移植物数量和块长度）。还研究了C侧链的包装顺序，并且发现随着温度降低或刚性C侧链增加而增加。此外，将SCLC共聚物的结果与柔性共聚物和可用的实验观察结果进行比较。目前工作中的仿真结果提供了用于对SCLC共聚物的未来调查的有用信息。

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  • 来源
    《RSC Advances》 |2015年第2期|共8页
  • 作者

    Li Xiaokang; Huang Feng; Jiang Tao; He Xiaohua; Lin Shaoliang; Lin Jiaping;

  • 作者单位

    E China Univ Sci &

    Technol Shanghai Key Lab Adv Polymer Mat Key Lab Ultrafine Mat Minist Educ Sch Mat Sci &

    Engn Shanghai 200237 Peoples R China;

    E China Univ Sci &

    Technol Shanghai Key Lab Adv Polymer Mat Key Lab Ultrafine Mat Minist Educ Sch Mat Sci &

    Engn Shanghai 200237 Peoples R China;

    E China Univ Sci &

    Technol Shanghai Key Lab Adv Polymer Mat Key Lab Ultrafine Mat Minist Educ Sch Mat Sci &

    Engn Shanghai 200237 Peoples R China;

    E China Normal Univ Dept Chem Shanghai 200241 Peoples R China;

    E China Univ Sci &

    Technol Shanghai Key Lab Adv Polymer Mat Key Lab Ultrafine Mat Minist Educ Sch Mat Sci &

    Engn Shanghai 200237 Peoples R China;

    E China Univ Sci &

    Technol Shanghai Key Lab Adv Polymer Mat Key Lab Ultrafine Mat Minist Educ Sch Mat Sci &

    Engn Shanghai 200237 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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