采用种子乳液聚合法合成聚甲基丙烯酸甲酯-丙烯酸丁酯(P(MMA-BA))乳液,再将乳液进行喷雾干燥制备了壳层由纳米粒子构成且具有中空形貌的单孔高分子微球.研究了微球形成机理,并着重探讨了预聚物用量、硬软单体配比m (MMA)∶m(BA)、交联剂用量对微球形貌、比表面积的影响.结果表明,当条件为乳液浓度2%,进口温度125℃,出口温度50℃,进料量250mL/h,预聚物用量为2%(质量分数),硬软单体比m(MMA)∶m(BA)约为7:3,交联剂用量为10%~20%(质量分数)时,能够形成形状规整的中空微球,用BET法测得其比表面积约为28.8259m2/g.考察了中空微球对低浓度苯酚溶液的吸附性能,结果表明,微球对苯酚的最大吸附量可达7.8568mg/g;微球用量较少时,单位质量微球吸附的苯酚量较大;微球中硬单体比例越高,所得微球比表面积越大,对苯酚的吸附量越高.
参考文献
[1] | 马光辉;苏志国.高分子微球材料[M].北京:化学工业出版社,2005 |
[2] | James D K;Leda K;Antonios G M .Injectable matrices and scaffolds for drug delivery in tissue engineering[J].Advanced Drug Delivery Reviews,2007,59:263-273. |
[3] | Elisabetla G;Lucia M;Stefano G et al.Spray-dried poly (D,L-lactide) microspheres containing carboplatin for veterinary use:in vitro and in vivo studies[J].AAPS Pharm Sci Tech,2005,6(01):108-114. |
[4] | Wang XJ;Hu DD;Yang JX .Synthesis of PAM/TiO2 composite microspheres with hierarchical surface morphologies[J].Chemistry of Materials: A Publication of the American Chemistry Society,2007(10):2610-2621. |
[5] | Qinghong Wang;Lifang Jiao;Yan Han .CoS2 Hollow Spheres: Fabrication and Their Application in Lithium-Ion Batteries[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2011(16):8300-8304. |
[6] | 唐宏科,杨利娟.中空聚合物乳液的制备及其性能研究[J].中国胶粘剂,2011(09):29-32. |
[7] | Shengnan Wang;Minchao Zhang;Wangqing Zhang .Yolk-Shell Catalyst of Single Au Nanoparticle Encapsulated within Hollow Mesoporous Silica Microspheres[J].ACS catalysis,2011(3):207-211. |
[8] | Lan, W.;Li, S.;Xu, J.;Luo, G. .Synthesis of titania-silica core-shell microspheres via a controlled interface reaction in a microfluidic device[J].Langmuir: The ACS Journal of Surfaces and Colloids,2011(21):13242-13247. |
[9] | Li J;Liu H Y;Wang S J .Fabrication of APS/PC alloy hollow microspheres via water/oil/water emulsion volvent evaporation[J].Materials Letters,2011,65(17-18):2696-2699. |
[10] | Liu Q;Huang C;Luo S;Liu ZH;Liu BL .Production of micron-sized hollow microspheres by suspension polymerization of St-DEGDA (diethylene glycol diacrylate) with petroleum ether (90-120 degrees C)[J].Polymer: The International Journal for the Science and Technology of Polymers,2007(6):1567-1572. |
[11] | XiaoDong He;XueWu Ge;HuaRong Liu;MoZhen Wang;ZhiCheng Zhang .Synthesis of Cagelike Polymer Microspheres with Hollow Core/Porous Shell Structures by Self-Assembly of Latex Particles at the Emulsion Droplet Interface[J].Chemistry of Materials,2005(24):5891-5892. |
[12] | Alysson Leandro Ribeiro Rattes;Wanderley Pereira Oliveira .Spray drying conditions and encapsulating composition effects on formation and properties of sodium diclofenac microparticles[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2007(1):7-14. |
[13] | A Proposed Numerical-experimental Method For Drying Kinetics In A Spray Dryer[J].Journal of food engineering,2009(1):20-26. |
[14] | Saluja, V.;Amorij, J.-P.;Kapteyn, J.C.;de Boer, A.H.;Frijlink, H.W.;Hinrichs, W.L.J. .A comparison between spray drying and spray freeze drying to produce an influenza subunit vaccine powder for inhalation[J].Journal of Controlled Release: Official Journal of the Controlled Release Society,2010(2):127-133. |
[15] | Ala'a H. Al-Muhtaseb;Khalid A. Ibrahim;Ahmad B. Albadarin .Remediation of phenol-contaminated water by adsorption using poly( methyl methacrylate) (PMMA)[J].Chemical engineering journal,2011(2):691-699. |
[16] | 黄凯兵,肖侠,陈振华,李劲.喷雾干燥法制备微米-纳米复合结构高吸油树脂中空微球[J].功能材料,2009(08):1398-1402. |
[17] | 许会平,彭奇均.聚丙烯酸甲酯二乙烯苯交联度的红外光谱研究[J].光谱实验室,2007(06):1145-1147. |
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%