文章摘要
CO2响应核壳/高尔夫球型微球的制备与性能
CO2-Responsive Core-Shell/Golf Ball-Like Microspheres: Preparation and Properties
  
DOI:10.16865/j.cnki.1000-7555.2017.09.019
中文关键词: CO2响应  pH  聚甲基丙烯酸二乙氨基乙酯  核壳  高尔夫球型  微球
英文关键词: CO2-responsive  pH  poly[2-(diethylamino)ethyl methacrylate]  core-shell  golf ball-like  microsphere
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作者单位
罗新杰1,于力恒2,冯玉军1 1. 四川大学高分子研究所高分子材料工程国家重点实验室,四川 成都 610065; 2. 大庆油田化工有限公司,黑龙江 大庆 163453 
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中文摘要:
      CO2 刺激响应聚合物材料近年广受关注,但CO2 刺激响应聚合物微球鲜见报道。利用种子乳液聚合制备了以聚苯乙烯(PS)为核,聚甲基丙烯酸二乙氨基乙酯(PDEA)为壳的PS-PDEA 微球,研究了其形貌、粒径、pH 和CO2响应行为。结果表明,该类微球同时具有核壳和高尔夫球型结构,核和壳尺寸分别约为162nm 和13nm,并显示出良好的pH和CO2 响应能力;乳液粒径随着CO2/N2 交替重复通入而可逆增大/减小;冷冻干燥后的微粉在酸性和碱性条件下分别变得相对亲水和疏水。
英文摘要:
      CO2-responsive polymer materials have gained much attention recently, however, their CO2-sensitive microsphere counterparts have been less documented. Here in this work polystyrene-poly[2-(diethylamino)ethyl methacrylate](PS-PDEA) microsphere was synthesized by seeded emulsion polymerization, and its morphology, size as well as pH- and CO2-responsiveness were investigated. It is found that this microsphere possesses both core-shell and golf ball structures. The size of core and shell is around 162 nm and 13 nm, respectively. Also, fine pH- and CO2-responsiveness of such microsphere is imparted. Alternatively repeatedly bubbling CO2 and replacing with N2 induce the hydrodynamic diameter to increase and decrease reversibly. Moreover, freeze-dried powders become relatively hydrophilic and hydrophobic at acidic and alkaline circumstances, respectively.
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