Preparation and Foam Properties of Janus Particles†

doi:10.7503/cjcu20170656

Abstract

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

CLC Number:

O647.2

TrendMD:

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

Figures/Tables 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.

References 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