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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Study on Anion Effect on the Phase Transition Behavior of Thermosensitive Polyamide
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1247-1249)
Author(s): Zhi-yi Wang, Materials and Chemical Engineering School, Hainan University, Haikou, China；
Ling-bin Lu, Materials and Chemical Engineering School, Hainan University, Haikou, China；
Yang Cao, Materials and Chemical Engineering School, Hainan University, Haikou, China；
Yi Cheng, Materials and Chemical Engineering School, Hainan University, Haikou, China；
Abstract: Phase transition behavior and salt effect of polyamide with polyethylene glycol as the main chain was studied in this paper. By measuring the light transmission rates of different polymer solutions, the influence of its critical solution temperature(LCST) in the salt solution was identified. It was found that the polyamide solution occured reversible phase transition in a narrow temperature range, and its critical solution temperature gradually decreased with the increase of the polymer solution concentration of NaCl、 KCl、 NaOH and Na2CO3 resulted in a decrease of the LCST of the solution.Species and anions of the salts dominated the salt effect.
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