Synthesis and morphology transformation of amphiphilic diblock polyurethane copolymers in aqueous solution
文献类型：期刊论文
| 作者 | Miao, Qing1,2; Jin, Yong1; Dong, Yang1,2; Cao, Zhifeng1,2; Zhang, Biao1,2 |
| 刊名 | Polymer international
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 59期号:8页码:1116-1121 |
| 关键词 | Amphiphilic block copolymers Large compound micelles Polyurethane Tem Morphology |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.2836 |
| 通讯作者 | Jin, yong(jinyong@cioc.ac.cn) |
| 英文摘要 | Amphiphilic block copolymers possess both hydrophobic and hydrophilic properties and can form versatile micellar structures in aqueous solution. the aim of the research presented was to prepare a series of non-ionic amphiphilic diblock polyurethane copolymers (pun) based on isophorone diisocyanate, monoallyl-end-capped poly(ethylene oxide) and poly(propylene oxide) (ppo), followed by an investigation of their micellization properties and morphology transformation in aqueous solution. the pun samples were synthesized by condensation polymerization. these polyurethanes exhibit surface tension as low as 33.7-37.0 mn m(-1). there is an obvious decrease in critical micelle concentration as the hydrophobic ppo molecular weight increases. according to transmission electron microscopy, the morphology of aggregates of the copolymers can be tuned by varying the concentration in aqueous solution rather than organic solvent. for example, for pu7, large compound micelles are produced instead of vesicles. for pu17, the concentration can be used to control the size and thickness of vesicles. vesicle size increases from 60 to 500 nm and vesicle thickness from 40 to 60 nm with concentration ranging from 0.003 to 0.03 wt%. the study shows that the copolymers in aqueous solution have excellent surface activities. in addition, they can self-assemble into large compound micelles or vesicles at certain concentrations. moreover, the synthesis method described allows one to obtain a desired morphology of aggregates by adjusting the composition of hydrophilic and hydrophobic segments, which provides a novel and simple way to obtain particles on the nanometer scale. (c) 2010 society of chemical industry |
| WOS关键词 | ACID) BLOCK-COPOLYMERS ; MULTIPLE MORPHOLOGIES ; DRUG-DELIVERY ; POLYMERIC MICELLES ; SURFACE-TENSION ; NANOPARTICLES ; WATER ; POLY(N-ISOPROPYLACRYLAMIDE) ; ASSEMBLIES ; SERIES |
| WOS研究方向 | Polymer Science |
| WOS类目 | Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000280677700013 |
| 出版者 | JOHN WILEY & SONS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2411983 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Jin, Yong |
| 作者单位 | 1.Chinese Acad Sci, R&D Ctr Polymer Sci & Technol, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Miao, Qing,Jin, Yong,Dong, Yang,et al. Synthesis and morphology transformation of amphiphilic diblock polyurethane copolymers in aqueous solution[J]. Polymer international,2010,59(8):1116-1121. |
| APA | Miao, Qing,Jin, Yong,Dong, Yang,Cao, Zhifeng,&Zhang, Biao.(2010).Synthesis and morphology transformation of amphiphilic diblock polyurethane copolymers in aqueous solution.Polymer international,59(8),1116-1121. |
| MLA | Miao, Qing,et al."Synthesis and morphology transformation of amphiphilic diblock polyurethane copolymers in aqueous solution".Polymer international 59.8(2010):1116-1121. |
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来源：中国科学院大学
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