標題: Miscibility in blends of liquid crystalline copolyester and semicrystalline poly(ethylene-2,6-naphthalene dicarboxylate)
作者: Ho, JC
Lin, TC
Wei, KH
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: liquid crystalline copolyester;miscibility;semicrystalline copolyester
公開日期: 1-十二月-2000
摘要: The miscibility in blends of random liquid crystalline copoly(oxybenzoate-ethylene terephthalate) at a molar ratio of 60:40 (P64) and semicrystalline poly(ethylene-2,6-naphthalene dicarboxylate) (PEN) were investigated with differential scanning calorimetry, wide angle X-ray diffraction and polarized optical micrography. It was found that P64 and PEN were partially miscible as evidenced from the appearance of a single glass transition temperature for each blend at different compositions. Furthermore, the Flory-Huggins interaction parameter, chi(12), for P64 and PEN was determined to be -1.13 through the melting point depression analysis, indicating miscibility in blends of P64; and PEN at the melt state. The coherence lengths of PEN in the presence of a small amount of P64, around 3%, were larger than that in pure PEN, implying the regularity of PEN crystals in the blends with low P64 content being more perfect than that of the pure PEN. (C) 2000 Elsevier Science Ltd. All rights reserved.
URI: http://hdl.handle.net/11536/30077
ISSN: 0032-3861
期刊: POLYMER
Volume: 41
Issue: 26
起始頁: 9299
結束頁: 9304
顯示於類別:期刊論文


文件中的檔案:

  1. 000089297800030.pdf