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PNIPAM 单链弹性的温度依赖性
关键字：PNIPAM;单分子力谱；LCST;温度依赖
PNIPAM是一种典型的温敏高分子。在水溶液中，通过改变温度可方便的调整PNIPAM的链构象。值得注意的是，前述过程是无扰状态（即不受外力）下的变化。一个有趣的问题是：如果在链末端加上一个外力，PNIPAM将有什么样的变化？我们利用基于AFM的单分子力谱研究了这个问题。
http://www.polymer.cn/research/dis_info16342 |
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振荡剪切流变学研究 PNIPAm 微凝胶的 Jamming 转变
关键字：PNIPAm 微凝胶，Jamming，振荡剪切流变
Jamming 是粒子分散体系浓度变化过程中的普遍现象，对非晶玻璃化转变的研究具有重要的借鉴意义。聚(N-异丙基丙烯酰胺)（PNIPAm）微凝胶由于温敏性，可以通过改变温度 T或悬浮液中的粒子重量浓度 w 来实现固-液转变。本工作利用流变学研究了 PNIPAm 微凝胶悬浮液的 jamming-unjamming 转变。动态温度扫描结果表明：发生 unjamming 转变的临界温度Tc随 w 的增加而升高...
http://www.polymer.cn/research/sy_info16500 |
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振荡剪切流变学研究 PNIPAm 微凝胶的 Jamming 转变
关键字：PNIPAm 微凝胶，Jamming，振荡剪切流变
Jamming 是粒子分散体系浓度变化过程中的普遍现象，对非晶玻璃化转变的研究具有重要的借鉴意义。聚(N-异丙基丙烯酰胺)（PNIPAm）微凝胶由于温敏性，可以通过改变温度 T或悬浮液中的粒子重量浓度 w 来实现固-液转变。本工作利用流变学研究了 PNIPAm 微凝胶悬浮液的 jamming-unjamming 转变。动态温度扫描结果表明：发生 unjamming 转变的临界温度Tc随 w 的增加而升高...
http://www.polymer.cn/research/dis_info18096 |
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PNIPAM 单链弹性的温度依赖性
关键字：PNIPAM;单分子力谱；LCST;温度依赖
PNIPAM是一种典型的温敏高分子。在水溶液中，通过改变温度可方便的调整PNIPAM的链构象。值得注意的是，前述过程是无扰状态（即不受外力）下的变化。一个有趣的问题是：如果在链末端加上一个外力，PNIPAM将有什么样的变化？我们利用基于AFM的单分子力谱研究了这个问题。
http://www.polymer.cn/research/dis_info16342 |
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Self-assembly of Hollow PNIPAM Microgels to Form Discontinuously
关键字：Discontinuously hollow microfiber; Ice-segregation-induced self-assembly;Thermo-responsiveness；
A new kind of hollow hydrogel microfiber with discontinuous hollow structure was prepared by an ice-segregation-induced self-assembly process. Monodisperse thermo-responsive hollow poly(N-isopropylacrylamide)
(PNIPAM) microgels were first synthesized by seed precipitation polymerization using colloidal SiO2 nanoparticles as seeds, followed by removing the silica cores of the formed SiO2/PNIPAM cor...
http://www.polymer.cn/research/sy_info19368 |
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Removal of crystal violet by clay/PNIPAm nanocomposite hydrogels with various clay contents
关键字：poly(N-isopropylacrylamide) , crystal violet , hydrogel
The clay/poly(N-isopropylacrylamide) (PNIPAm) nanocomposite (CPN) hydrogels, using lithium magnesium silicate hydrate (LMSH) as a clay mineral physical cross-linker, with the mass ratio of NIPAm/LMSH ranging from 5 to 30 wt.% were prepared to remove crystal violet (CV) from aqueous solution. Morphology and temperature-sensitivity of hydrogels were investigated by SEM and DSC. Adsorption capac...
http://www.polymer.cn/research/sy_info17418 |
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Study of the Kinetics of the Pancake-to-Brush Transition of Poly(N-isopropylacrylamide) Chains
关键字：pancake, brush, pnipam, qcm
The chemical grafting of thiol-terminated poly(N-isopropylacrylamide) (HS-PNIPAM) chains to a gold surface from a solution was investigated with a quartz crystal microbalance (QCM) in real time. The frequency and energy dissipation responses revealed that short HS-PNIPAM chains exhibit three-regime kinetics of the grafting. In regimes I and II, the HS-PNIPAM chains form pancake an...
http://www.polymer.cn/research/sy_info15847 |
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Self-assembly of Hollow PNIPAM Microgels to Form Discontinuously
关键字：Discontinuously hollow microfiber; Ice-segregation-induced self-assembly;Thermo-responsiveness；
A new kind of hollow hydrogel microfiber with discontinuous hollow structure was prepared by an ice-segregation-induced self-assembly process. Monodisperse thermo-responsive hollow poly(N-isopropylacrylamide)
(PNIPAM) microgels were first synthesized by seed precipitation polymerization using colloidal SiO2 nanoparticles as seeds, followed by removing the silica cores of the formed SiO2/PNIPAM cor...
http://www.polymer.cn/research/sy_info19368 |
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Removal of crystal violet by clay/PNIPAm nanocomposite hydrogels with various clay contents
关键字：poly(N-isopropylacrylamide) , crystal violet , hydrogel
The clay/poly(N-isopropylacrylamide) (PNIPAm) nanocomposite (CPN) hydrogels, using lithium magnesium silicate hydrate (LMSH) as a clay mineral physical cross-linker, with the mass ratio of NIPAm/LMSH ranging from 5 to 30 wt.% were prepared to remove crystal violet (CV) from aqueous solution. Morphology and temperature-sensitivity of hydrogels were investigated by SEM and DSC. Adsorption capac...
http://www.polymer.cn/research/sy_info17418 |
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Study of the Kinetics of the Pancake-to-Brush Transition of Poly(N-isopropylacrylamide) Chains
关键字：pancake, brush, pnipam, qcm
The chemical grafting of thiol-terminated poly(N-isopropylacrylamide) (HS-PNIPAM) chains to a gold surface from a solution was investigated with a quartz crystal microbalance (QCM) in real time. The frequency and energy dissipation responses revealed that short HS-PNIPAM chains exhibit three-regime kinetics of the grafting. In regimes I and II, the HS-PNIPAM chains form pancake an...
http://www.polymer.cn/research/sy_info15847 |
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