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Morphological changes in giant vesicles comprised of amphiphilic block copolymers by incorporation of ionic segments into the hydrophilic block chain

机译：两亲性嵌段共聚物组成的大囊泡的形态变化，是通过将离子链段掺入亲水性嵌段链中

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摘要

The morphological changes in giant spherical vesicles comprised of amphilhilic poly(methacrylic acid)-block -poly(methyl methacrylate-random -methacrylic acid), PMAA-b -P(MMA-r -MAA), by incorporation of the 3-sulfopropyl methacrylate potassium salt (SpMA) into the hydrophilic PMAA block chains were investigated. The vesicles were reduced in size as the SpMA ratio increased due to the variation in the critical packing shape by the expansion of the hydrophilic surface area by the incorporation of the more hydrophilic ionic segments. The increase in the SpMA ratio also delayed the transition from the spherical vesicles to a film-like bilayer. The giant vesicles containing the SpMA segments were disrupted into a nonspecific form by the electrostatic interaction with poly(allylamine hydrochloride) at a 2.5?M ratio of the unit for the allylamine hydrochloride (AH) to the SpMA. A large excess of the AH/SpMA above 5.0 caused no disruption, but partial fusion of the vesicles accompanied by a decrease in size.
机译：两性聚（甲基丙烯酸）-嵌段-聚（甲基丙烯酸甲酯-无规-甲基丙烯酸），PMAA-b-P（MMA-r）组成的巨型球形囊泡的形态变化-MAA），通过将3-磺丙基甲基丙烯酸钾盐（SpMA）掺入亲水性PMAA嵌段链进行了研究。随着SpMA比率的增加，囊泡的尺寸减小，这归因于通过结合更多亲水性离子链段而扩大了亲水表面积，从而导致了临界堆积形状的变化。 SpMA比率的增加也延迟了从球形囊泡向膜状双层的过渡。含有SpMA片段的大囊泡通过与盐酸烯丙胺（AH）与SpMA的单位比为2.5？M的聚（烯丙胺盐酸盐）发生静电相互作用而被破坏为非特异性形式。高于5.0的AH / SpMA的大量过量没有引起破坏，但是囊泡的部分融合伴随着尺寸的减小。

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