ICCAS OpenIR
Phase change materials of n-alkane-containing microcapsules: observation of coexistence of ordered and rotator phases
Fu, Dongsheng1,2; Su, Yunlan1; Xie, Baoquan1; Zhu, Haijin1; Liu, Guoming1,2; Wang, Dujin1
2011
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN1463-9076
Volume13Issue:6Pages:2021-2026
AbstractIn the present investigation, the crystallization and phase transition behaviours of normal alkane (n-docosane) in microcapsules with a mean diameter of 3.6 mu m were studied by the combination of differential scanning calorimetry (DSC), temperature-dependent X-ray diffraction (XRD) and variable-temperature solid-state nuclear magnetic resonance (VT solid-state (13)C NMR). The DSC and VT solid-state (13)C NMR results reveal that a surface freezing monolayer is formed prior to the bulk crystallization of the microencapsulated n-docosane. More interestingly, it is confirmed that after the bulk crystallization, the ordered triclinic phase coexists with the rotator phase I (RI) for the microencapsulated n-docosane. We argue that the reduction of the free energy difference between the two phases, resulting from the microencapsulation process, leads to the coexistence of the ordered triclinic and rotator phases of the normal alkanes.
DOI10.1039/c0cp01173h
Indexed BySCI
Language英语
WOS IDWOS:000286628200010
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71418
Collection中国科学院化学研究所
Corresponding AuthorSu, Yunlan
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Fu, Dongsheng,Su, Yunlan,Xie, Baoquan,et al. Phase change materials of n-alkane-containing microcapsules: observation of coexistence of ordered and rotator phases[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2011,13(6):2021-2026.
APA Fu, Dongsheng,Su, Yunlan,Xie, Baoquan,Zhu, Haijin,Liu, Guoming,&Wang, Dujin.(2011).Phase change materials of n-alkane-containing microcapsules: observation of coexistence of ordered and rotator phases.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,13(6),2021-2026.
MLA Fu, Dongsheng,et al."Phase change materials of n-alkane-containing microcapsules: observation of coexistence of ordered and rotator phases".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 13.6(2011):2021-2026.
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