Amphiphilic pentablock copolymer (CBABC-type) based on poly(propylene oxide), poly(methyl methacrylate) and poly(acrylic acid) has been synthesized through ring opening polymerization (ROP) and reversible addition-fragmentation chain transfer polymerization (RAFT) techniques. Gel permeation chromatography (GPC) results envisage the control nature of polymerization. Structural property and thermal behavior of the pentablock copolymer have been analyzed through various characterization techniques. Further, a novel nanocomposite comprised of iron oxide nanoparticles (Fe₃O₄ NPs) and penta block copolymer has been successfully developed and characterized using various techniques. Vibrating Sample Magnetometer (VSM) results indicate that the presence of copolymer has no adverse effect towards the magnetic property of Fe₃O₄ NPs. Comparative studies towards micellar stability and pH-triggered release behavior of pentablock copolymer and nanocomposite have been discussed in detail.

通过开环聚合（ROP）和可逆加成-断裂链转移聚合（RAFT）技术合成了基于聚环氧丙烷，聚甲基丙烯酸甲酯和聚丙烯酸的两亲五嵌段共聚物（CBABC型）。凝胶渗透色谱法（GPC）的结果设想了聚合反应的控制性质。已通过各种表征技术分析了五嵌段共聚物的结构性质和热行为。此外，由氧化铁纳米颗粒（Fe ₃ O ₄NPs和五嵌段共聚物已成功开发，并使用各种技术进行了表征。振动样品磁强计（VSM）结果表明，共聚物的存在对Fe ₃ O ₄ NPs的磁性能没有不利影响。已经详细讨论了对五嵌段共聚物和纳米复合材料的胶束稳定性和pH触发释放行为的比较研究。