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空心PNIPAM-Ag纳米复合微球的制备及性能
关键字：空心微球 PNIPAM-Ag纳米复合微球 温敏性 催化活性
金属纳米粒子因其特有的光、电、磁和催化特性而备受关注。纳米粒子由于小尺寸效应而具有较高的表面能，因而易于团聚。近年来，采用各种材料作为载体以固定纳米金属粒子[1-3]，受到了广大科研工作者的关注。其中，聚N-异丙基丙烯酰胺(PNIPAM)因其优异的温敏响应性而尤为突出，被广泛用作载体而负载金属粒子，防止纳米粒子团聚的同时赋予复合微球以特殊的性能
http://www.polymer.cn/research/dis_info10319 |
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稀溶液中PVA-b-PNIPAm的聚集和凝胶化行为研究
关键字：分子间氢键 分子内氢键 PVA PNIPAm 凝胶化
利用RAFT聚合，我们将具有很强氢键相互作用的PVA(poly（vinyl alcohol）)引入到温敏高分子PNIPAm(Poly（N-isopropylacrylamide）)中,制备了嵌段共聚物PVA170-b-PNIPAm85和PVA170-b-PNIPAm370。利用激光光散射技术,原位跟踪研究了PVA-b-PNIPAm在浓度为0.20mg/mL时在水溶液中温敏行为。随温度增加， PVA170-b-PNIPAm85的流体力学半径Rh发生显著变化。如如图1所示， 在35 °C 发生了第一个转变，Rh为单分布...
http://www.polymer.cn/research/dis_info9837 |
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Au@PNIPAM 纳米粒子的制备及其热敏催化
关键字：PNIPAM 金纳米粒子 最低临界溶解温度（LCST） 热敏催化
聚N－异丙基丙烯酰胺（PNIPAM）及其衍生物在水溶液中拥有热响应性，即在最低临界溶解温度（LCST）以下PNIPAM 是亲水的；而在这个温度以上，高分子链收缩，不溶于水[1]。把PNIPAM 分子链接枝到贵金属纳米粒子的表面，可以利用PNIPAM 的热敏性，实现贵金属纳米粒子的热敏催化。
http://www.polymer.cn/research/dis_info4388 |
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Dielectric Relaxations of PNIPAM Colloidal Dispersions at the Coil-Globule Transition
关键字：Dielectric relaxation，temperature-sensitive hydrogels，colloidal dispersion，coil-globule transition
介电谱是建立在很宽频率范围（10-6～1012 Hz）研究电磁波与物质相互作用的一种成熟的谱学方法，对于高聚物材料电性能和结构的研究是一个强有力的工具。
http://www.polymer.cn/research/dis_info14502 |
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Preparation of microfibers by ice-segregation-induced selfassembly of hollow PNIPAM microgels
关键字：ice-segregation-induced self-assembly,hollow microgel,thermo-responsiveness,N-isopropylacrylamide
A new hydrogel microfiber with dense pore structure was prepared by ice-segregation-induced self-assembly process. Mono-dispersed silica/poly (N-isopropylacrylamide (PNIPAM) core-shell composite microgels were firstly synthesized by seed-emulsion polymerization. 3-...
http://www.polymer.cn/research/dis_info11601 |
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Study on a thermo sensitive PNIPAM coated silica particle by light scattering
关键字：PNIPAM coated silica particle, size, zeta potential, temperature dependence,
Poly(N-isopropylacrylamide) (PNIPAM) is a thermo-sensitive polymer, which undergoes a reversible phase transition from an extending configuration to a condensed structure when the temperature is higher than the lower critical solution temperature&nbs...
http://www.polymer.cn/research/dis_info9617 |
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Dielectric Relaxations of PNIPAM Colloidal Dispersions at the Coil-Globule Transition
关键字：Dielectric relaxation，temperature-sensitive hydrogels，colloidal dispersion，coil-globule transition
介电谱是建立在很宽频率范围（10-6～1012 Hz）研究电磁波与物质相互作用的一种成熟的谱学方法，对于高聚物材料电性能和结构的研究是一个强有力的工具。
http://www.polymer.cn/research/dis_info14502 |
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Preparation of microfibers by ice-segregation-induced selfassembly of hollow PNIPAM microgels
关键字：ice-segregation-induced self-assembly,hollow microgel,thermo-responsiveness,N-isopropylacrylamide
A new hydrogel microfiber with dense pore structure was prepared by ice-segregation-induced self-assembly process. Mono-dispersed silica/poly (N-isopropylacrylamide (PNIPAM) core-shell composite microgels were firstly synthesized by seed-emulsion polymerization. 3-...
http://www.polymer.cn/research/dis_info11601 |
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Study on a thermo sensitive PNIPAM coated silica particle by light scattering
关键字：PNIPAM coated silica particle, size, zeta potential, temperature dependence,
Poly(N-isopropylacrylamide) (PNIPAM) is a thermo-sensitive polymer, which undergoes a reversible phase transition from an extending configuration to a condensed structure when the temperature is higher than the lower critical solution temperature&nbs...
http://www.polymer.cn/research/dis_info9617 |
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红外驱动的氧化石墨烯-PNIPAm双层复合水凝胶驱动器
刺激响应水凝胶被用作智能驱动材料可以将外界刺激转换成动作。红外(IR)辐射被认为是理想的驱动能源因为它具有可以渗透生物材料、远程和无触点控制的优点。一个新的红外驱动的双层水凝胶驱动器由一层氧化石墨烯(GO)-锂藻土一聚异丙基丙烯酰胺(PNIPAm)凝胶和一层锂藻土-PNIPAm凝胶组成。这个双层的凝胶通过两次原位聚合制得。含GO的水凝胶可以快速的吸收红外辐射并转换成热能，导致含GO的水凝胶的升温速度远远超过没有GO的水凝胶...
http://www.polymer.cn/research/sy_info18991 |
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