Order−Disorder Conformational Transitions of N-Isopropylacrylamide−Sodium Styrene Sulfonate Copolymers in Aqueous Solutions

详细信息    查看全文

• 作者：Tatiana V. Burova ; Natalia V. Grinberg ; Valerij Ya. Grinberg ; Yecang Tang ; Guangzhao Zhang ; Alexei R. Khokhlov
• 刊名：Macromolecules
• 出版年：2008
• 出版时间：August 26, 2008
• 年：2008
• 卷：41
• 期：16
• 页码：5981-5984
• 全文大小：113K
• 年卷期：v.41,no.16(August 26, 2008)
• ISSN：1520-5835

文摘

Copolymers of N-isopropylacrylamide (NIPA) with sodium styrene sulfonate (SSS) synthesized in aqueous medium at 70 °C undergo reversible cooperative conformational transitions without phase separation of their aqueous solution. Data obtained by high-sensitivity differential scanning calorimetry and velocity sedimentation for the NIPA-SSS copolymers have shown that depending on the SSS content either intermolecular association (micellization) or intramolecular chain folding take place upon heating.