摘要
以平均粒径为0.7~0.9μm的明胶(Gelatin)微球为基核,通过定向沉积自组装法成功制各了以Gelatin为核、BaTiO3为壳的Gelatin/BaTiO3核壳复合粒子。利用TEM、XRD、FT-IR、TG和光学接触角测量等技术对复合粒子的形貌、结构、组成及表面亲水性能进行了研究。结果表明,复合粒子为球形微粒,具有良好的表面亲水性和分散稳定性,BaTiO3壳层约占粒子总质量的18.8%,具有立方相晶相结构。将粒子分散到水凝胶弹性体中,测量在有/无电场作用下得到的弹性体的储能模量,借以考察复合粒子在弹性体中的电场响应性能,发现Gelatin/BaTiO3复合粒子的电场响应性能明显强于纯BaTiO3粒子。说明将BaTiO3包覆在聚合物上能显著提高BaTiO3粒子的电场响应性能。
The Gelatin/BaTiO3 core-shell composite particles were prepared by directional sedimentary self-assembly on the gelatin microspheres with an average particle size about 0.7-0.9 μm. Morphology, structure, composition, and surface hydrophile of the particle were characterized by TEM, XRD, FT-IR, TG, and optical contact angle measuring instrument. The results show that the composite particles are spherical with hydrophilic surface and good dispersion, of which cubic BaTiO3 shell accounts for about 18.8% of the total weight. After BaTiO3 and Gelatin/BaTiO3 particles being dispersed into gelatin hydrous elastomers cured with/without an electric field, the difference of storage modulus of the elastomers suggests that Gelatin/BaTiO3 composite particles have stronger electro response than pure BaTiO3 particles. These data demonstrate that coating polymer with BaTiO3 significantly can improve BaTiO3 particles electro response.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2016年第12期1306-1310,共5页
Journal of Inorganic Materials
基金
中央高校基础研究基金(1301030457)~~