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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Preparation and characterisation of multilayer films and microcapsules containing poly(N-isopropylacrylamide-co-sodium vinylsulphonate) and applicability on controlled release
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Preparation and characterisation of multilayer films and microcapsules containing poly(N-isopropylacrylamide-co-sodium vinylsulphonate) and applicability on controlled release

机译:含聚(N-异丙基丙烯酰胺-乙烯基磺酸共钠)的多层膜和微胶囊的制备,表征及控释适用性

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摘要

The copolymers of N-isopropylacrylamide and sodium vinylsulphonate were synthesised by free radical polymerisation. The layer-by-layer self-assembly of the copolymers with poly(allylamine) hydrochloride was performed through assembling onto silicon wafer to form multilayer films and onto CaCO3 microparticles doped with poly(styrene sulphonate) as well as deltamethrin microcrystals to form microcapsules. The multilayer films and microcapsules were characterised by atomic force microscopy, transmission electron microscopy and scanning electron microscopy. The release behaviour of deltamethrin in the microcapsules under different conditions was also investigated by high performance liquid chromatography. Results show that these deltamethrin microcapsules have good thermo-sensitive properties and deltamethrin release can be controlled via changing temperature or self-assembly layers.
机译:通过自由基聚合合成N-异丙基丙烯酰胺和乙烯基磺酸钠的共聚物。共聚物与聚(烯丙胺)盐酸盐的逐层自组装是通过组装到硅片上以形成多层膜,并组装到掺杂有聚苯乙烯磺酸盐和溴氰菊酯微晶的CaCO3微粒上以形成微囊而进行的。通过原子力显微镜,透射电子显微镜和扫描电子显微镜对多层膜和微胶囊进行表征。还通过高效液相色谱法研究了溴氰菊酯在不同条件下在微胶囊中的释放行为。结果表明,这些溴氰菊酯微囊具有良好的热敏特性,可通过改变温度或自组装层来控制溴氰菊酯的释放。

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