頁籤選單縮合
題 名 | Synthesis and Characterization of Side-chain Liquid Crystalline Polyoxetanes Containing 4-(Alkanyloxy)phenyl 4-pentylbenzoate Side Groups |
---|---|
作 者 | Hsu,Chain-shu; Lu,Yong-hong; | 書刊名 | Journal of Polymer Research |
卷 期 | 6:3 1999.07[民88.07] |
頁 次 | 頁155-160 |
分類號 | 467.4 |
關鍵詞 | Side-chain LCP; Polyoxetane; Mesomorphic property; |
語 文 | 英文(English) |
英文摘要 | The synthesis and characterization of side-chain liquid-crystalline polyoxetanes containing 4-(alkanyloxy) phenyl 4-pentylbenzoate side groups is presented. Differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction measurements were used to characterize the mesomorphic properties of the polyoxetanes. Those polymers with three to five methylene units in the spacers exhibit the enantiotropic smectic A and a nematic phaser, whereas the polymers with longer spacers (n=6 or 12) display polymorphism of smectic phases. The polyoxetane backbones are amorphous in nature. No side chain crystallization occurred for any of the polyoxetanes synthesized in this study. |
本系統中英文摘要資訊取自各篇刊載內容。