论文部分内容阅读
梳状-线性共聚物在选择性溶剂中可以自组装形成两种不同类型的聚集体,其中第I类的自组装发生在亲、疏溶剂链之间,而第II类发生在线性链和梳状亚结构之间.本工作利用耗散粒子动力学方法,分别研究了梳状-线性共聚物在侧链和主链选择性溶剂中形成的这两类聚集体,探讨了侧链长度和侧链数量等对聚集体类型及形貌的影响.研究表明,第II类聚集体在侧链长度较短且侧链数量较多时容易形成.将模拟结果与文献报道的实验结果相比较,发现两者能较好地吻合.此外,本研究获得了一些在实验中较难得到的信息,有助于进一步理解梳状-线性共聚物的自组装行为.
Comb-linear copolymers can self-assemble into two different types of aggregates in a selective solvent, where type I self-assembly occurs between pro- and solvate chains and category II occurs in linear chains and combs Shaped sub-structure.In this work, dissipative particle-dynamics method was used to study the two types of aggregates formed by comb-linear copolymers in side-chain and main-chain selective solvents, respectively. The effects of side chain length and side The number of chains, etc. on the type and morphology of aggregates.The results show that the aggregates of type II are easy to form when the length of the side chains is short and the number of side chains is large.Comparing the simulation results with the experimental results reported in the literature, In addition, we obtained some information that is hard to get in the experiment, which will help to further understand the self-assembly behavior of the comb-linear copolymer.