FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS
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FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS
FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS
高分子科学(英文版)2009年27卷第4期 页码:561-567
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Lei Shen, Guang-zhao Zhang. FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS[J]. 高分子科学(英文版), 2009,27(4):561-567.
Lei Shen, Guang-zhao Zhang. FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS[J]. 2009,27(4):561-567.
Lei Shen, Guang-zhao Zhang. FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS[J]. 高分子科学(英文版), 2009,27(4):561-567.DOI:
Lei Shen, Guang-zhao Zhang. FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS[J]. 2009,27(4):561-567.DOI:
FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE) CHAINS IN DILUTE SOLUTIONS
The association of poly(N,N-diethylacrylamide) (PDEA) chains has been investigated by a combination of static and dynamic laser light scattering (LLS). Unlike poly(N-isopropylacrylamide) (PNIPAM), PDEA chains can not form the C=O…H―N hydrogen bonds. Our results demonstrate that a limited number of PDEA chains collapse and associate into metastable globules in dilute solutions. The heating rate has great effect on the mesoglobule size. The formation of such mesoglobules is attributed to the competition between intrachain contraction and interchain association. The stabilization has been explained in terms of viscoelastic effect.
Abstract
The association of poly(N,N-diethylacrylamide) (PDEA) chains has been investigated by a combination of static and dynamic laser light scattering (LLS). Unlike poly(N-isopropylacrylamide) (PNIPAM), PDEA chains can not form the C=O…H―N hydrogen bonds. Our results demonstrate that a limited number of PDEA chains collapse and associate into metastable globules in dilute solutions. The heating rate has great effect on the mesoglobule size. The formation of such mesoglobules is attributed to the competition between intrachain contraction and interchain association. The stabilization has been explained in terms of viscoelastic effect.