Janus颗粒的制备及泡沫性能

doi:10.7503/cjcu20170656

摘要/Abstract

摘要：

通过改进的Pickering乳液模板法, 对合成的单分散SiO₂纳米颗粒的局部表面进行氟化硅烷改性, 制备了具有两亲性的Janus颗粒; 研究了其在气/液表面上的自组装行为和泡沫性能. 采用粒度分析仪、扫描电子显微镜(SEM)、傅里叶变换红外光谱仪(FTIR)、荧光显微镜、界面流变仪和泡沫扫描分析仪等对SiO₂颗粒的粒径分布、石蜡乳滴的表面形貌以及Janus颗粒的化学组成、表面结构、界面活性和泡沫性能进行了表征. 研究结果表明, 制备的Janus颗粒表面呈现非对称结构. 界面活性测试结果表明, Janus颗粒具有良好的界面活性, 可以将气/水表面的表面张力降低至38 mN/m. 泡沫性能测试结果表明, Janus颗粒能够有效地抑制气泡合并、歧化和液膜排液, 所制备的泡沫具有良好的稳定性.

关键词: Janus颗粒, Pickering乳液, 自组装, 界面活性, 泡沫性能

Abstract:

The monodisperse silica nanoparticles were synthesized, and then amphiphilic Janus particles decorated with fluorinated chains were prepared by improving Pickering emulsions method. The self-assembly behavior at the air-water interface and foam properties of Janus particles were investigated. The size distribution of silica nanoparticles, surface morphology of wax colloidosomes and chemical composition, surface structure, interfacial activity, foam properties of Janus particles were characterized by particle size analyzer, scanning electron microscopy(SEM), Fourier transform infrared spectroscope(FTIR), fluorescence microscope, interfacial rheometer and foamscan. The results show that the surface of the prepared Janus particles is asymmetric. The test results of interfacial activity show that Janus particles have favorable interfacial activity at the gas/liquid interface, and the surface tension could be reduced to 38 mN/m. The test results of foam properties show that Janus particles effectively controll the coalescence and disproportionation, and the foam shows excellent stability.

Key words: Janus particle, Pickering emulsion, Self-assembly, Interfacial activity, Foam property

中图分类号:

O647.2

TrendMD:

王刚, 王克亮, 逯春晶, 王影. Janus颗粒的制备及泡沫性能. 高等学校化学学报, 2018, 39(5): 990.

WANG Gang,WANG Keliang,LU Chunjing,WANG Ying. Preparation and Foam Properties of Janus Particles^†. Chem. J. Chinese Universities, 2018, 39(5): 990.

图/表 8

Scheme 1 Preparation of the Janus particles by Pickering emulsions method

Scheme 2 Synthesis of fluorescent Janus particles by Pickering emulsions method

Fig.1 SEM image(A) and size distribution(B) of silica nanoparticles synthesized by Stöber method

Fig.2 SEM images of wax colloidosomes with cooling at room temperature(A), before(B) and after(C) the modified reaction with cooling in the ice bath

Fig.3 FTIR spectra of bare(a) and modified(b) silica nanoparticles

Fig.4 Fluorescence images of Janus particles labeled with FITC with low(A) and high(B) magnifications

Fig.5 Dynamic surface tension(A) and variation of E with the surface tension γ(B) of Janus particles Note:Mass fraction of Janus particles(%): a. 0.1; b. 0.2; c. 0.4; d. 0.6; e. 0.8; f. 1.0. (B) The solid line shows E=γ/2(Gibbs stability criterion).

Fig.6 Foam stability(A) and liquid fraction(B) of the foam Note:Mass fraction of Janus particles(%): a. 0.1; b. 0.2; c. 0.4; d. 0.6.

参考文献 38

[1]	Arzhavitina A., Steckel H., Int. J. Pharmaceut., 2010, 394(1), 1—17
[2]	Kärrman A., Elgh-Dalgren K., Lafossas C., Møskeland T., Environ. Chem., 2011, 8(4), 372—380
[3]	Asghari A.K., Norton I., Mills T., Sadd P., Spyropoulos F., Food Hydrocolloid, 2016, 53(7), 311—319
[4]	Grau R.A., Laskowski J. S., Can. [J]. Chem. Eng., 2006, 84(2), 170—182
[5]	Wang K.L., Wang G., Lu C. J., Pei C. Y., Wang Y., Materials, 2017, 10(12), 1403
[6]	Hunter T.N., Pugh R. J., Franks G. V., Jameson G. [J]., Adv. Colloid Interfac., 2008, 137(2), 57—81
[7]	Ramsden W., Proc. R. Soc. London, 1904, 72(477), 156—164
[8]	Pickering S.U., [J]. Chem. Sci., 1907, 91(9), 2001—2021
[9]	Lam S., Velikov K.P., Velev O. D., Curr. Opin. Colloid In., 2014, 19(5), 490—500
[10]	Zhang Y., Wu J., Wang H., Meredith J.C., Behrens S. H., Angew. Chem. Int. Ed., 2014, 126(49), 13603—13607
[11]	Carl A., Bannuscher A., Klitzing R., Langmuir, 2015, 31(5), 1615—1622
[12]	Binks B.P., Lumsdon S. O., Langmuir, 2000, 16(23), 8622—8631
[13]	Horozov T.S., Curr. Opin. Colloid In., 2008, 13(3), 134—140
[14]	Binks B.P., Horozov T. S., Angew. Chem. Int. Ed., 2005, 117(24), 3788—3791
[15]	Gonzenbach U.T., Studart A. R., Tervoort E., Gauckler L. J., Langmuir, 2006, 22(26), 10983—10988
[16]	Fujii S., Iddon P.D., Ryan A. J., Armes S. P., Langmuir, 2006, 22(18), 7512—7520
[17]	Liu G.P., Wang J., Li W., Liu S. Y., Sun D. J., Chem. [J]. Chinese Universities, 2013, 34(2), 386—393
	(刘国鹏, 王君, 李伟, 刘尚营, 孙德军. 高等学校化学学报, 2013, 34(2), 386—393)
[18]	Binks B.P., Rocher A., Kirkland M., Soft Matter, 2011, 7(5), 1800—1808
[19]	Bärwinkel S., Bahrami R., Löbling T.I., Schmalz H., Müller A. H., Altstädt V., Adv. Eng. Mater., 2016, 18(5), 814—825
[20]	Zhou P., Liu B., Liang F.X., Wang Q., Qu X. Z., Yang Z. Z., Chem. [J]. Chinese Universities, 2015, 36(7), 1431—1436
	(周鹏, 刘宝, 梁福鑫, 王倩, 屈小中, 杨振中. 高等学校化学学报, 2015, 36(7), 1431—1436)
[21]	Bradley L.C., Stebe K. J., Lee D., [J]. Am. Chem. Soc., 2016, 138(36), 11437—11440
[22]	Ayala A., Carbonell C., Imaz I., Maspoch D., Chem. Commun., 2016, 52(29), 5096—5099
[23]	Pan D., Mou F., Li X., Deng Z., Sun J., Xu L., Guan J., J. Mater. Chem. A, 2016, 4(30), 11768—11774
[24]	Han T.H., Liang F. X., Yang Z. Z., Chem. [J]. Chinese Universities, 2017, 38(11), 1921—1926
	(韩天昊, 梁福鑫, 杨振中. 高等学校化学学报, 2017, 38(11), 1921—1926)
[25]	Zou Q.Z., Li Z. W., Lu Z. Y., Sun Z. Y., Nanoscale, 2016, 8(7), 4070—4076
[26]	Wang X., Feng X., Ma G., Yao L., Ge M., Adv. Mater., 2016, 28(16), 3131—3137
[27]	Kim J.W., Cho J., Cho J., Park B. J., Kim Y. J., Choi K. H., Kim J. W., Angew. Chem. Int. Ed., 2016, 128(14), 4585—4589
[28]	Liu K.H., Lin Q., Cui Z. G., Pei X. M., Jiang J. Z., Chem. [J]. Chinese Universities, 2017, 38(1), 85—93
	(刘凯鸿, 林琪, 崔正刚, 裴晓梅, 蒋建中. 高等学校化学学报, 2017, 38(1), 85—93)
[29]	Luo D., Wang F., Alam M.K., Yu F., Mishra I. K., Bao J., Ren Z., Chem. Mater., 2017, 29(8), 3454—3460
[30]	Roh K.H., Martin D. C., Lahann [J]., Nat. Mater., 2005, 4(10), 759—763
[31]	Howse J.R., Jones R. A., Ryan A. J., Gough T., Vafabakhsh R., Golestanian R., Phys. Rev. Lett., 2007, 99(4), 048102
[32]	Aveyard R., Soft Matter, 2012, 8(19), 5233—5240
[33]	Wang C.Y., Yang R., Chen Y. H., Tong Z., Chem. [J]. Chinese Universities, 2010, 31(5), 864—866
	(王朝阳, 阳瑞, 陈云华, 童真. 高等学校化学学报, 2010, 31(5), 864—866)
[34]	Hong L., Jiang S., Granick S., Langmuir, 2006, 22(23), 9495—9499
[35]	Sharifzadeh E., Salami-Kalajahi M., Hosseini M.S., Aghjeh M. K. R., Colloid Surface A, 2016, 506, 56—62
[36]	Li Y.D., Bai Z. J., Wang B. W., Sun Y. B., Yang Z. Z., Li C. F., [J]. Chin. Ceram. Soc., 2016, 44(8), 1213—1219
	(李亚东, 白志杰, 王百威, 孙延标, 杨赞中, 李成峰. 硅酸盐学报, 2016, 44(8), 1213—1219)
[37]	Gibbs J.W., The Scientific Papers of J. Willard Gibbs, Ox Bow Press, Woodbridge, 1993
[38]	Stocco A., Drenckhan W., Rio E., Langevin D., Binks B.P., Soft Matter, 2009, 5(11), 2215—2222