Preparation of the sustained-release microencapsulation of ammonium persulfate by induced coalescence

doi:10.16085/j.issn.1000-6613.2017-1812

Abstract

Abstract: During the fracture process of oil production,the rapid break of hydrogel fracturing fluid would negatively affect the fracturing construction. To solve this problem,a microcapsule breaker with the sustained-release performance is the key point. Ammonium persulfate (APS) was microencapsulated with the shell of acrylonitrile-butadiene-styrene copolymer (ABS) via coacervation induced by polydimethylsiloxane (PDMS). Here,we investigated the composition structure,micro-morphology,particle size distribution,and release performance of product,and the influence factors. It is concluded that the APS microcapsules coated with ABS (APS/ABS microcapsules) were microspheres at micron scale which possess a core-shell structure,good slow release property and benign breaking performance for the hydraulic gel fracturing system. There were some factors such as the ratio of nuclear to shell,the viscosity of PDMS and stirring rate affecting the particle size distribution,release property of the microcapsules and the embedding rate of ammonium persulfate in the microcapsules. Once the viscosity of PDMS surpassed 3000mm²/s,the embedding rate of ammonium persulfate in microcapsule breaker could be > 70%. In addition,all the reagents could be recycled to lower production cost during the preparation process. Therefore,it is an economical and feasible method to achieve the microencapsulation of APS through ABS coacervation induced by PDMS.

Key words: microcapsule, coalescence, particle size distribution, petroleum, fracturing fluid, acrylonitrile-butadiene-styrene (ABS), ammonium persulfate

摘要： 在石油开采的压裂过程中，水凝胶压裂液的提前快速破胶会影响压裂施工，具有缓释性能的微胶囊破胶剂成为解决这一问题的关键。本文通过聚二甲基硅氧烷（PDMS）诱导丙烯腈-丁二烯-苯乙烯共聚物（ABS）壳材料的凝聚，实现了对过硫酸铵（APS）破胶剂的微胶囊化。研究了产品的组成结构、微观形态、粒径分布，并探讨了其缓释性能、破胶性能及其影响因素。结果表明，ABS包覆的APS微胶囊（APS/ABS微胶囊）是具有核-壳结构的微米级微球，对水凝胶压裂体系具有良好的缓释破胶性能。其粒径分布、释放性质、微胶囊中过硫酸铵的包埋率都受核/壳比、PDMS黏度和转速的影响。当PDMS运动黏度大于3000mm²/s时，微胶囊破胶剂中过硫酸铵的包埋率可达70％以上。值得一提的是，制备过程中的所有有机试剂均可实现回收再利用以降低生产费用。因此，通过PDMS诱导ABS凝聚实现对APS的微胶囊化是一种经济可行的方法。

关键词: 微胶囊, 凝聚, 粒度分布, 石油, 压裂液, 丙烯腈-丁二烯-苯乙烯, 过硫酸铵

CLC Number:

TQ317.9

HUANG Fuzhi, ZHOU Qian. Preparation of the sustained-release microencapsulation of ammonium persulfate by induced coalescence[J]. Chemical Industry and Engineering Progress, 2018, 37(08): 3076-3085.

黄福芝, 周倩. 诱导聚结法过硫酸铵缓释微胶囊的制备[J]. 化工进展, 2018, 37(08): 3076-3085.

References

[1] CREWS J, HUANG T, WOOD W. The future of fracturing-fluid technology and rates of hydrocarbon recovery[C]//SPE 115475, 2008.
[2] 管保山,丛连铸,丁里,等. 延迟破胶及强制裂缝闭合技术的研究及应用[J]. 钻井液与完井液,2006,23(4):65-67. GUAN Baoshan, CONG Lianzhu, DING Li, et al.Research and application of delayed gel breaking and forced fracture closure[J]. Drilling Fluid &Completion Fluid, 2006, 23(4):65-67.
[3] GULBIS J, KING M T, HAWKINS G W, et al. Encapsulated breaker for aqueous polymeric fluids[J]. Spe Production Engineering, 1992, 7(1):9-14.
[4] ANDERSSON T M, NORDSTIERNA L, NORDIN M, et al. Encapsulation of actives for sustained release[J]. Physical Chemistry Chemical Physics Pccp, 2013, 15(41):17727-17741.
[5] ABBASPOURRAD A, CARROLL N J, KIM S H, et al. Polymer microcapsules with programmable active release[J]. Journal of the American Chemical Society, 2013, 135(20):7744-7750.
[6] BERGEK J, TROJER M A, UHR H, et al. Controlled release of a microencapsulated arduous semi-hydrophobic active from coatings:superhydrophilic polyelectrolyte shells as globally rate-determining barriers[J]. Journal of Controlled Release Official Journal of the Controlled Release Society, 2016,225:31-39.
[7] ORIVE G, SANTOS E, PONCELET D, et al. Cell encapsulation:technical and clinical advances[J]. Trends in Pharmacological Sciences, 2015, 36(8):537-546.
[8] KATO K, INUKAI K, FUJIKURA K, et al. Effective encapsulation of laccase in an aluminium silicate nanotube hydrogel[J]. New Journal of Chemistry, 2014, 38(8):3591-3599.
[9] HEIDEBACH T, FÖRST P, KULOZIK U. Microencapsulation of probiotic cells for food applications[J]. Critical Reviews in Food Science & Nutrition, 2012, 52(4):291-311.
[10] OKADA T, MIYAMOTO K, SAKAI T, et al. Encapsulation of a polyoxometalate into an organosilica microcapsule for highly active solid acid catalysis[J]. ACS Catalysis, 2014, 4(1):73-78.
[11] ZHANG Y, LI P. Porous Zr-doped SiO₂ shell/TiO₂ core nanoparticles with expanded channels for photocatalysis[J]. Materials & Design, 2015, 88:1250-1259.
[12] NEMETH B, NEMETH A S, TÓTH J, et al. Consolidated microcapsules with double alginate shell containing paraffin for latent heat storage[J]. Solar Energy Materials & Solar Cells, 2015, 143:397-405.
[13] MAKUTA T, KADOYA K, IZUMI H, et al. Synthesis of cyanoacrylate-covered xylitol microcapsules for thermal storage[J]. Chemical Engineering Journal, 2015, 273:192-196.
[14] YU S, WANG X, WU D. Microencapsulation of n-octadecane phase change material with calcium carbonate shell for enhancement of thermal conductivity and serving durability:synthesis, microstructure, and performance evaluation[J]. Applied Energy, 2014, 114(2):632-643.
[15] 赵忠扬,田助红,张秀文,等. NBA-101胶襄破胶剂的研制与应用[J]. 油田化学,1995(4):324-327. ZHAO Zhongyang, TIAN Zhuhong, ZHANG Xiuwen, et al. Development and application of NBA-101 encapsulated breaker[J]. Oilfield Chemistry, 1995(4):324-327.
[16] PATIL P, MUTHUSAMY R, PANDYA N. Novel controlled-release breakers for high-temperature fracturing[M]. Springer Berlin Heidelberg, 2013:340-351.
[17] 张福铭,李学军,陈小华,等.一种缓释破胶型压裂支撑剂及其制备方法:CN102690645A[P]. 2012-09-26. ZHANG Fuming, LI Xuejun, CHEN Xiaohua, et al. A sustained-release broken-type fracturing proppant and its preparation method CN102690645A[P]. 2012-09-26.
[18] 左明明. 可控制释放过硫酸铵微胶囊的制备与性能研究[D]. 扬州:扬州大学,2015, ZUO Mingming. Preparation and characterization of controlled released microcapsules of ammonium persulfate[D]. Yangzhou:Yangzhou University, 2015.
[19] 宋健, 陈磊, 李效军. 微胶囊化技术及应用[M]. 北京:化学工业出版社, 2001. SONG Jian, CHEN Lei, LI Xiaojun. Microencapsulation technology and its application[M]. Beijing:Chemical Industry Press, 2001.
[20] ZHENG L, DING Z, ZHANG M, et al. Microencapsulation of bayberry polyphenols by ethyl cellulose:preparation and characterization[J]. Journal of Food Engineering, 2011, 104(1):89-95.
[21] KAMELIAN F S, MOUSAVI S M, AHMADPOUR A, et al. Preparation of acrylonitrile-butadiene-styrene membrane:investigation of solvent/nonsolvent type and additive concentration[J]. Korean Journal of Chemical Engineering, 2014, 31(8):1399-1404.
[22] BORICHA A G, MURTHY Z V P. Acrylonitrile butadiene styrene/chitosan blend membranes:preparation, characterization and performance for the separation of heavy metals[J]. Journal of Membrane Science, 2009, 339(1/2):239-249.
[23] TAN J, SHE X L, YUAN F, et al. Preparation of acrylonitrile-butadiene-styrene terpolymer nanotubes with array structure in anodic aluminium oxide membrane using wetting techniques[J]. Journal of Porous Materials, 2008, 15(6):619-623.
[24] YANG R, ZHANG Y, WANG X, et al. Preparation of n-tetradecane-containing microcapsules with different shell materials by phase separation method[J]. Solar Energy Materials & Solar Cells, 2009, 93(10):1817-1822.
[25] KOBAYASHI S, ENDO M, NAGAYAMA S. Catalytic asymmetric dihydroxylation of olefins using a recoverable and reusable polymer-supported osmium catalyst[J]. Journal of the American Chemical Society, 1999, 121(48):11229-11230.
[26] MENG F, WANG S, LIU H, et al. Microencapsulation of oxalic acid(OA) via coacervation induced by polydimethylsiloxane (PDMS) for the sustained release performance[J]. Materials & Design, 2017, 116:31-41.
[27] AUGUSSTIN M A, HEMAR Y. Nano-and micro-structured assemblies for encapsulation of food ingredients[J]. Chemical Society Reviews, 2009, 40(25):902-912.
[28] NIHANT N, STASSEN S, GRANDFILS C, et al. Microencapsulation by coacervation of poly(lactide-co-glycolide)Ⅱ:encapsulation of a dispersed aqueous phase[J]. Polymer International, 1993, 32(2):171-176.
[29] MULDER M. Materials and material properties[M]//Basic Principles of Membrane Technology. Springer Netherlands, 1996:17-53.
[30] RUIZ J M, TISSIER B, BENOIT J P. Microencapsulation of peptide:a study of the phase separation of poly(D,L-lactic acid-co-glycolic acid)copolymers 50/50 by silicone oil[J]. International Journal of Pharmaceutics, 1989, 49(1):69-77.
[31] AMINI K. Three-dimensional thermal model for interpreting distributed temperature sensing data during hydraulic fracturing[D]. Lubbock:Texas Tech University, 2014.
[32] SHAH A, FISHWICK R, WOOD J, et al. A review of novel techniques for heavy oil and bitumen extraction and upgrading[J]. Energy & Environmental Science, 2010, 3(6):700-714.