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首页> 外文期刊>Journal of Applied Polymer Science >Influence of Various Reaction Media on the Thermal and Rheological Properties of Poly(acrylamide-co-N-hexadecylacrylamide)
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Influence of Various Reaction Media on the Thermal and Rheological Properties of Poly(acrylamide-co-N-hexadecylacrylamide)

机译：各种反应介质对聚丙烯酰胺-共-N-十六烷基丙烯酰胺的热流变特性的影响

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摘要

A hydrophobically modified polyacrylamide (PAM) was synthesized by the copolymerization of acrylamide (Am) and N-hexadecylacrylamide (hAm) through solution copolymerization in a polar organic solvent. Polymer synthesis was performed in three nonaqueous media, including dimethyl sulfoxide (DMSO), a mixture of DMSO and an anionic surfactant such as sodium dodecyl sulfate, and a mixture of DMSO and an acidic surfactant such as dodecyl benzene sulfonic acid. The obtained copolymer, poly(acrylamide-co-N-hexadecylacrylamide) [poly(Am-co-hAm)], was characterized by ~1H-NMR. The physical properties of poly(Amco-hAm)s synthesized in different media were compared with those of PAM and with each other by viscosity measurement, X-ray diffraction, thermogravimetric analysis, and differential scanning calorimetry. We investigated the ways in which the polymerization medium affected the hydrophobic distribution within the resulting copolymer structure. This aspect, in turn, should have altered the solution properties and the microstructure of the copolymer. For this purpose, we studied the viscometric behavior in diluted solutions, the thermal behavior and thermal stability of the copolymers, and finally, the crystalline structure of the copolymers.
机译：通过在极性有机溶剂中进行溶液共聚，通过丙烯酰胺（Am）和N-十六烷基丙烯酰胺（hAm）的共聚反应合成疏水改性的聚丙烯酰胺（PAM）。聚合物合成是在三种非水介质中进行的，包括二甲基亚砜（DMSO），DMSO和阴离子表面活性剂（例如十二烷基硫酸钠）的混合物以及DMSO和酸性表面活性剂（例如十二烷基苯磺酸）的混合物。通过〜1 H-NMR对得到的共聚物聚（丙烯酰胺-co-N-十六烷基丙烯酰胺）[聚（Am-co-hAm）]进行表征。通过粘度测量，X射线衍射，热重分析和差示扫描量热法，将在不同介质中合成的聚（Amco-hAm）的物理性质与PAM的性质进行了比较。我们研究了聚合介质影响所得共聚物结构内疏水分布的方式。反过来，这方面应该已经改变了共聚物的溶液性质和微观结构。为此，我们研究了稀释溶液中的粘度行为，共聚物的热行为和热稳定性，最后研究了共聚物的晶体结构。

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