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首页> 外文期刊>Journal of Applied Polymer Science >Crafting of N,N '-methylenebisacrylamide onto cellulose using Co(III)-acetylacetonate complex in aqueous medium
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Crafting of N,N '-methylenebisacrylamide onto cellulose using Co(III)-acetylacetonate complex in aqueous medium

机译：使用Co（III）-乙酰丙酮化物络合物在水性介质中将N，N'-亚甲基双丙烯酰胺合成到纤维素上

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摘要

The grafting of N,N'-methylenebisacrylamide (N,N'-MBA) onto cellulose is carried out using the cobaltacetylacetonate complex (Co(acac)(3)) under nitrogen atmosphere at 40 degrees C. The rate of graft, copolymerization has been studied as a function of [N,N'-MBA], [Co(acac)(3)], and temperature. The activation energy of grafting is found to be 156.0 k J mol(-1) within the temperature range of 30-60 degrees C. The effect of perchloric acid, methanol, and surfactants on graft yield has also been studied and results are suitably explained. The higher efficiency of the metal chelate in initiation of graft copolymerization has been assumed due to the coordination of the pi electrons of the N,N'-MBA with the metal chelate, which facilitated the formation of the radicals through homolytic cleavage of metal-oxygen bond of the cobalt acetylacetonate complex. On the basis of the results, a suitable kinetic scheme for graft copolymerization is presented and rate expression is derived. (C) 2000 John Wiley & Sons, Inc. [References: 30]
机译：N，N'-亚甲基双丙烯酰胺（N，N'-MBA）在纤维素上的接枝反应是使用乙炔基丙酮酸钴络合物（Co（​​acac）（3））在氮气气氛下于40摄氏度进行的。被研究为[N，N'-MBA]，[Co（acac）（3）]和温度的函数。发现在30-60℃的温度范围内，接枝的活化能为156.0 k J mol（-1）。还研究了高氯酸，甲醇和表面活性剂对接枝率的影响，并适当解释了结果。 。由于N，N'-MBA的pi电子与金属螯合物的配位作用，已假定金属螯合物在接枝共聚反应中具有较高的效率，这有助于通过金属氧的均相裂解形成自由基。乙酰丙酮钴配合物的键。根据结果​​，提出了合适的接枝共聚动力学方案并推导了速率表达式。 （C）2000 John Wiley＆Sons，Inc. [参考：30]

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