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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41302

Title: Measuring glass transition temperatures of polymers by using phase-stepping shadow moiré
Authors: Jiong-Shiun Hsu;Bor-Jiunn Wen;Wei Li;Chen-Wei Yang
Contributors: 國立臺灣海洋大學:機械與機電工學系
Keywords: Glass transition temperature(Tg);Full-field optical methods;Phase-stepping shadow moiré(PSSM)
Date: 2017-02
Issue Date: 2017-02-14T03:06:23Z
Publisher: Polymer Testing
Abstract: Abstract:The glass transition temperature (Tg) is a crucial factor in the applications of polymers. Therefore, various methodologies for Tg measurement have been developed. However, although full-field optical methods have been used in a wide range of areas and provide the advantages of high sensitivity and noncontact measurement, they have not been applied to characterize glass transition behavior for Tg measurement. Therefore, a full-field optical deflection measurement method, namely phase-stepping shadow moiré (PSSM), was employed to observe the glass transition phenomenon of a polymer and determine its Tg. The resolution of the PSSM system applied for deflection measurement in this study was 1.56 μm. A polystyrene (PS) strip was employed to demonstrate the suitability of PSSM for Tg measurement. The results indicated that the glass transition of a PS strip could be clearly determined by PSSM; the Tg was found to be 98 °C, which is close to the measurement result of other presently used methods. Therefore, this study shows that PSSM is a viable, low-cost, and easy-to-use technique that can be used to measure the Tg of polymers.
Relation: 57,pp.58-66
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41302
Appears in Collections:[機械與機電工程學系] 期刊論文

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