| 第 35 卷第 3 期 |  | Vol. 35 No. 3 | | 2005 年 6 月 | Jun 2005 |
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所屬欄目：其它
PEO-b-PS兩親性嵌段共聚物的合成與表征 |
| 黃孝華; 張海良; 王霞瑜(湘潭大學(xué)化學(xué)學(xué)院; 湖南湘潭) |
| 摘 要：以PEO-Br為大分子引發(fā)劑,CuBr/2-2’-聯(lián)吡啶為催化體系,采用原子轉移自由基聚合(ATRP)方法制得了一系列分子量可控且分子量分布窄的兩親性嵌段共聚物,通過(guò)1H-NMR、GPC、DSC等測試手段對其進(jìn)行了表征,研究結果表明嵌段共聚物隨著(zhù)聚氧乙烯含量的降低,結晶度(Xc)、結晶熔融溫度(Tm)、結晶溫度(Tc)降低;當共聚物中聚氧乙烯的含量降為45%時(shí),嵌段共聚物已無(wú)結晶現象。 |
| 關(guān)鍵詞：原子轉移自由基聚合; 嵌段共聚物; 活性聚合 |
| 中圖分類(lèi)號：TQ316.334 文獻標識碼：A 文章編號：1009-9212(2005)03-0042-04 |
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| Synthesis and Characterization of Amphiphilic Diblock Copolymer PEO-b-PS |
| HUANG Xiao-hua; ZHANG Hai-liang; WANG Xia-yu（College of Chemistry; Xiangtan University; Xiangtan 411105; China） |
| Abstract：Amphiphilic diblock copolymers with different molecular weight and low polydispersities was synthesized by atom transfer radical polymerization(ATRP) of styrene using PEO-Br as a macroiniator, which was obtained by the eaterification of poly(ethylene oxide) with 2-bromoisobutyryl bromide. Its struture and property were characterized by the ~(1)H NMR, GPC, DSC. The result shows that the PEO phase has a decreasing propensity for spherical crystallization and less cleaner spherical structure as the PEO conent ... |
| Key words：atom transfer radical polymerization; block copolymer; living polymerization |
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收稿日期：2005-01-30
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