Salt Effect on the Phase Transition Behavior of Thermo-sensitive Polyamide
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2012年第2期
论文作者：卢凌彬
文章页码：285 - 289
摘 要：Phase transition behavior and influence of ions on the thermo-sensitive polyamide with polyethylene glycol as the main chain were studied in detail.By measuring the light transmission rates of polymer solutions,the change of its lower critical solution temperature（LCST）in the salt solution was investigated.It was found that a reversible phase transition of the polyamide occurred at the LCST and fi nished in a narrow temperature range.The LCST was associated with species of ions in salt solution.Anions had a great impact on the phase transition performance of the thermo-sensitive polyamide,while the cations had a slight influence on the phase transition.Different anions had different coagulation ability to ’salt-out’ the polyamide.The order was:CO32->SiO32->HPO42->OH->Cl->HCO3->HSO3->NO2->NO3-.
卢凌彬
Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources,Department of Materials and Chemical Engineering,Hainan University
摘 要：Phase transition behavior and influence of ions on the thermo-sensitive polyamide with polyethylene glycol as the main chain were studied in detail.By measuring the light transmission rates of polymer solutions,the change of its lower critical solution temperature（LCST）in the salt solution was investigated.It was found that a reversible phase transition of the polyamide occurred at the LCST and fi nished in a narrow temperature range.The LCST was associated with species of ions in salt solution.Anions had a great impact on the phase transition performance of the thermo-sensitive polyamide,while the cations had a slight influence on the phase transition.Different anions had different coagulation ability to ’salt-out’ the polyamide.The order was:CO32->SiO32->HPO42->OH->Cl->HCO3->HSO3->NO2->NO3-.
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