頁籤選單縮合
題 名 | Modeling Ostwald Ripening Rate of Styrene Miniemulsions Stabilized by a Homolog of N-Alkane Costabilizers |
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作 者 | Lin, Chun-ta; Chern, Chorng-shyan; | 書刊名 | Journal of the Taiwan Institute of Chemical Engineers |
卷 期 | 49 2015.04[民104.04] |
頁 次 | 頁240-246 |
分類號 | 460.02 |
關鍵詞 | Miniemulsion; Ostwald ripening; Modified Kabal'nov equation; Regular solution; Intermolecular interactions; |
語 文 | 英文(English) |
英文摘要 | The modified Kabal'nov equation developed by a thermodynamic approach dealing with a regular solution of monomer and costabilizer as the two-component disperse phase adequately describes the Ostwald ripening rate data in a wide range of the volume fraction of costabilizer for styrene miniemulsions stabilized by a homolog of n-alkane costabilizers (CnH2n+2; n = 10, 12, 16, 18, 20, 24, 32) upon aging at 25 °C. The results show that the costabilizer with the shortest chain length (C10H22) is not hydrophobic enough to effectively retard the Ostwald ripening process. The effectiveness of n-alkanes as costabilizer in suppressing the Ostwald ripening process increases with increasing n-alkane molecular weight. Nevertheless, further increasing the n-alkane chain length from C24H50 to C32H66 does not lead to significant improvement in the effectiveness of n-alkane as costabilizer. The major characteristics of the modified Kabal'nov equation are also discussed in this work. |
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