Probing the micellization of diblock and triblock copolymers of poly(L-lactide) and poly(ethylene glycol) in aqueous and NaCl salt solutions
文献类型：期刊论文
| 作者 | Dai, ZL; Piao, LH; Zhang, XF; Deng, MX; Chen, XS; Jing, XB |
| 刊名 | COLLOID AND POLYMER SCIENCE
 |
| 出版日期 | 2004-02-01 |
| 卷号 | 282期号:4页码:343-350 |
| 关键词 | Fluorescence Micelles Poly(Ethylene Glycol) Poly(L-lactide) |
| ISSN号 | 0303-402X |
| DOI | 10.1007/s00396-003-0937-7 |
| 英文摘要 | The micelle formation of a series of amphiphilic block copolymers in aqueous and NaCl solutions was studied by a fluorescent probe technique using pyrene as a 'model drug'. These copolymers were synthesized from poly (ethylene glycol) (PEG) and L-lactide by a new calcium ammoniate catalyst. They had fixed PEG block lengths (44, 104 or 113 ethylene oxide units) and various poly(L-lactide) (PLLA) block lengths (15-280 lactide units). The critical micelle concentration (cmc) was found to decrease with increasing PLLA content. The distinct dissimilarity of the cmc values of diblock and triblock copolymers based on the same block length of PEG provided evidence for the different configurations of their micelles. It was also observed that the introduction of NaCl salt significantly contributed to a decrease in the cmcs of the copolymers with short PEG and PLLA blocks, while it had less influence on the cmcs of copolymers with long PEG or PLLA blocks. The dependence of partition coefficients ranging from 0.2x10(5) to 1.9x10(5) on the PLLA content in the copolymer and on the micelle configuration was also discussed. The contribution of NaCl salt to increasing the partition of pyrene into a micellar phase was observed. |
| 语种 | 英语 |
| WOS记录号 | WOS:000189001500006 |
| 出版者 | SPRINGER-VERLAG |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55209]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jing, XB |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, ZL,Piao, LH,Zhang, XF,et al. Probing the micellization of diblock and triblock copolymers of poly(L-lactide) and poly(ethylene glycol) in aqueous and NaCl salt solutions[J]. COLLOID AND POLYMER SCIENCE,2004,282(4):343-350. |
| APA | Dai, ZL,Piao, LH,Zhang, XF,Deng, MX,Chen, XS,&Jing, XB.(2004).Probing the micellization of diblock and triblock copolymers of poly(L-lactide) and poly(ethylene glycol) in aqueous and NaCl salt solutions.COLLOID AND POLYMER SCIENCE,282(4),343-350. |
| MLA | Dai, ZL,et al."Probing the micellization of diblock and triblock copolymers of poly(L-lactide) and poly(ethylene glycol) in aqueous and NaCl salt solutions".COLLOID AND POLYMER SCIENCE 282.4(2004):343-350. |
入库方式： OAI收割
来源：化学研究所
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