PHASE CHANGE MATERIALS OF N-ALKANE-CONTAINING MICROCAPSULES: COEXISTENCE OF ORDERED AND ROTATOR PHASES
(0) Polymers often crystallize into metastable phases when cooling from the melt. Since it is important to clarify the size effect on metastable states in polymers, considerable attention has been paid to investigate the confined crystallization of polymers. However, it is difficult to propose a quantitative formula to describe the transition dynamics of metastable states in polymers, due to the multiple hierarchical structures and various domain sizes in these states. Normal alkanes (C)n_(2n+2), n-alkanes, abbreviated as C_n, having linear chain molecular structure, are among the most fundamental building blocks of organic, biological, and polymeric systems and can provide the well-defined model systems for studying the complex crystallization behaviors of polymers. Meanwhile, microcapsules with C_n as core are widely utilized as phase change materials, and therefore the research on the microcapsulated C_n may provide theoretical aid for the design of the phase change materials. In the present investigation, the crystallization behaviors of w-docosane (n-C(22)H_ (46) in microcapsules (abbreviated as m-C_(22)) using melamine-formaldehyde resin as the shell material by in-situ polymerization were investigated1. The microcapsules prepared show the mean diameter of ca. 3 urn and narrow size distribution with porous surface (Fig. 1).
Dongsheng Fu Yunlan Su Haijin Zhu Guoming Liu Baoquan Xie Dujin Wang
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Joint Laboratory for Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
219-220
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）