研究了两亲性嵌段共聚物聚苯乙烯-b-聚丙烯酸(PS-b-PAA)的胶束化行为,探讨了胶束对AgNO3的增溶作用以及胶束内AgNO3的还原反应.结果表明:PS-b-PAA在二甲苯中可以形成直径在40 nm~100 nm之间的胶束;PS-b-PAA胶束对AgNO3具有明显的增溶作用,但胶束溶液对AgNO3的溶解能力较弱,络合银的羧酸基团占总羧酸基团的7.4%.还原剂的用量及胶束内AgNO3的渗入量是影响胶束内银纳米粒子生成及形态的重要因素,随着还原剂加入量的增多,胶束中生成的银粒子尺寸减小,每个胶束中出现多个纳米粒子.
参考文献
[1] | Yu K.;Eisenberg A.;Bartels C. .Vesicles with hollow rods in the walls: A trapped intermediate morphology in the transition of vesicles to inverted hexagonally packed rods in dilute solutions of PS-b-PEO[J].Macromolecules,1998(26):9399-9402. |
[2] | Spatz JP.;Hartmann C.;Moller M.;Herzog T.;Krieger M. Boyen HG.;Ziemann P.;Kabius B.;Mossmer S. .Ordered deposition of inorganic clusters from micellar block copolymer films[J].Langmuir: The ACS Journal of Surfaces and Colloids,2000(2):407-415. |
[3] | Royal S;Liu G J et al.[J].Chemistry of Materials,2000,12:20822091. |
[4] | Schrock R R;R Silbey R J et al.[J].Journal of the American Chemical Society,1990,112(19):6858-6859. |
[5] | Bronstein L;Krmer E;Antonietti M et al.[J].CHEMISTRY OF MATERIALS,1999,11(06):1402-1405. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%