方案摘要
方案下载应用领域 | |
检测样本 | |
检测项目 | |
参考标准 |
The solvent composition induced reentrant behavior of poly(N-isopropylacrylamide) (PNIPAM) chains grafted on a SiO2 surface in water-methanol mixtures was investigated using a quartz crystal microbalance with dissipation monitoring (QCM-D) at 20 °C. The frequency and energy dissipation responses showed that the grafted PNIPAM chains sharply collapse when the methanol content (xm) reaches 17 mol %. In the range 17-50 mol %, the grafted chains remain in a collapsed state. Further increase of the methanol content leads to an abrupt reswelling of the collapsed chains at xm > 50 mol %. The sharp reentrant swelling-to-collapse-to-swelling transition was attributed to the water-methanol complexation instead of the preferential adsorption effect. Our results also suggest that the water-methanol complexation is not induced by hydrophobic interaction but by hydrogen bonding.
PTT-显微拉曼-石墨烯检测
凯戈纳斯:Hot Disk瞬态平面热源法在建筑节能材料测试中的应用
凯戈纳斯:近场光学显微镜与传统光学显微镜的对比介绍
相关产品
SYMCEL 生物代谢活性微量热仪 CalScreener
Advance Riko高温润湿性及接触角测量仪 WET-1200
SAL-3000Plus ALD原子层沉积系统
SAL3000原子层沉积系统
GMDX-便携拉曼
Mila-5050 2英寸快速退火炉
日本Antares微生物代谢微反应热测试系统
SSP-1000桌面型磁控溅射系统
AGUS-SPS-2000放电等离子烧结系统
SAL1000 系列桌面型ALD原子层沉积系统
SERSTECH一键式手持型拉曼光谱仪100
电弧等离子体沉积系统
AGUS-SPS放电等离子烧系统(Rx系列)
AGUS-SPS放电等离子烧系统(Sx系列)
Advance Riko高温显微镜TMS-E1S
关注
拨打电话
留言咨询