资料摘要
资料下载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.
文献贡献者
TLS-100
简介：The TLS-100 is a portable thermal conductivity meter used to measure thermal conductivity and thermal resistivity. Perfect for testing the thermal conductivity of soil, polymers, viscous liquids, and other soft materials; as well as testing the thermal conductivity of concrete, rock, stone, or other hard materials. Tests can be performed with the push of a button. The collected data is automatically analyzed and results are displayed immediately.
THW--L2
简介：The Transient Hot Wire (THW-L2) Liquid Thermal Conductivity Meter is an advanced measurement system for direct determination of the thermal conductivity of liquids and pastes in accordance with ASTM D7896. The THW-L2 was designed with speed and operational simplicity in mind. With a single measurement of less than 2 seconds in duration, small volumes of liquids and pastes can be accurately and precisely measured for thermal conductivity. The THW-L2 utilizes a non-stationary measurement approach and rapid test times to limit convective effects for samples with a wide range of viscosities.
HFM brochure
简介：The Heat Flow Meter (HFM) 100 is an easy-to-use rapid technique for the measurement of thermal resistance and thermal conductivity of insulation products, construction materials, packaging, and assemblies. Thermal conductivity is a measure of the ability of a material to conduct heat and can be critical for defining energy efficiency and thermal performance in materials. The Thermtest HFM has been designed and engineered to combine the highest accuracy, repeatability, widest temperature range, and industry leading performance, all at an exceptional value.
AAPS 2014 T3325 Spectrophotometric pKa determination
简介：AAPS 2014 T3325 Spectrophotometric pKa determination
Dissolution titration template method for solubility determination
简介：ScienceDirect-European Journal of Pharmaceutical Sciences:pH Metric Solubility
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
