Problems in the size exclusion chromatography of poly(N-isopropylacrylamide) on styragel columns
- Авторлар: Estrin Y.1, Perepelitsina E.1, Grishchuk A.1
-
Мекемелер:
- Institute of Problems of Chemical Physics
- Шығарылым: Том 90, № 7 (2016)
- Беттер: 1474-1478
- Бөлім: Physical Chemistry of Surface Phenomena. Chromatography
- URL: https://journals.rcsi.science/0036-0244/article/view/168509
- DOI: https://doi.org/10.1134/S0036024416070086
- ID: 168509
Дәйексөз келтіру
Аннотация
The molecular weights of poly(N-isopropylacrylamide) (PNIPA), calculated according to polystyrene calibration standards upon the elution of THF on styragel columns, appear to be much lower than their actual values determined using independent approaches. This is likely due to interactions between the nitrogen-containing units of PNIPA polymer chains and the sorbent, so the polymer is eluted in the mode intermediate between exclusion and critical. An effective exclusion mode during the elution of PNIPA on a styragel column can be achieved by using an eluent more polar than tetrahydrofuran (particularly, 1-methylpyrrolidone).
Авторлар туралы
Ya. Estrin
Institute of Problems of Chemical Physics
Хат алмасуға жауапты Автор.
Email: estriny@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
E. Perepelitsina
Institute of Problems of Chemical Physics
Email: estriny@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432
A. Grishchuk
Institute of Problems of Chemical Physics
Email: estriny@icp.ac.ru
Ресей, Chernogolovka, Moscow oblast, 142432