Optical Properties and Crystallization of Natural Waxes at Several Annealing Temperatures: a Terahertz Time-Domain Spectroscopy Study
被引:14
作者:
Tian, Lu
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机构:
Natl Photoelect Technol & Funct Mat & Applicat In, Natl Key Lab Photoelect Technol & Funct Mat Cultu, Xian 710069, Peoples R China
Northwest Univ, Sch Phys, Xian 710069, Peoples R ChinaNatl Photoelect Technol & Funct Mat & Applicat In, Natl Key Lab Photoelect Technol & Funct Mat Cultu, Xian 710069, Peoples R China
Tian, Lu
[1
,2
]
Xu, Xinlong
论文数: 0引用数: 0
h-index: 0
机构:
Natl Photoelect Technol & Funct Mat & Applicat In, Natl Key Lab Photoelect Technol & Funct Mat Cultu, Xian 710069, Peoples R China
Northwest Univ, Inst Photon & Photon Technol, Xian 710069, Peoples R ChinaNatl Photoelect Technol & Funct Mat & Applicat In, Natl Key Lab Photoelect Technol & Funct Mat Cultu, Xian 710069, Peoples R China
Xu, Xinlong
[1
,3
]
机构:
[1] Natl Photoelect Technol & Funct Mat & Applicat In, Natl Key Lab Photoelect Technol & Funct Mat Cultu, Xian 710069, Peoples R China
[2] Northwest Univ, Sch Phys, Xian 710069, Peoples R China
[3] Northwest Univ, Inst Photon & Photon Technol, Xian 710069, Peoples R China
The thermal analysis and optical properties of paraffin wax, beeswax, and liquid paraffin annealed at variable temperatures have been conducted using terahertz time-domain spectroscopy (THz-TDS) coupled with SEM methods. The characteristic optical properties of natural waxes can be used to analyze natural wax adulteration. The lamellar structure of paraffin wax and beeswax grew by a sheet of chain expansion. Furthermore, the crystallization process of paraffin wax can be assigned: rotator-solid transition and liquid-solid ones. According to the temperature-dependent refractive index curves, the refractive index of paraffin wax varies from large to small followed by rotator-liquid transition, untreated one, and liquid-solid one, respectively. The results indicated that THz-TDS has been proved to be of great potential in identification the crystallization of waxes.