Thermoresponsive behavior of sodium alginate grafted with poly(N-isopropylacrylamide) in aqueous media

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2018-03-15 DOI:10.1016/j.carbpol.2017.12.059

Oana-Nicoleta Ciocoiu , Georgios Staikos , Cornelia Vasile

引用次数: 33

Abstract

Thermoresponsive graft copolymers were synthesized. Thermally induced properties were introduced by grafting poly (N-isopropylacrylamide) (PNIPAM) side chains onto a sodium alginate backbone. The resulting graft copolymers cover a broad range in PNIPAM composition and molecular weight. Remarkable thermothickening behavior in water and 0.1 M NaCl is observed by viscometry when the temperature, concentration, weight ratio of PNIPAM side chains to backbone, and PNIPAM molecular weight are higher than certain critical values. This behavior is reversible and could have applications in oil rigs and drug delivery systems.

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海藻酸钠接枝聚n -异丙基丙烯酰胺的热响应行为

合成了热响应接枝共聚物。通过将聚n -异丙基丙烯酰胺(PNIPAM)侧链接枝到海藻酸钠骨架上，引入了热诱导性质。所得到的接枝共聚物在PNIPAM组成和分子量上覆盖了广泛的范围。当温度、浓度、PNIPAM侧链与主链的质量比、PNIPAM分子量均高于某一临界值时，PNIPAM在水和0.1 M NaCl中表现出显著的热增稠行为。这种行为是可逆的，可以应用于石油钻井平台和药物输送系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.