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Functionalization of crosslinked polyacrylamide through gamma-radiation-induced grafting of 4-vinylpyridine

机译:通过γ射线诱导的4-乙烯基吡啶接枝,使交联聚丙烯酰胺官能化

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摘要

Crosslinked polyacrylamide beads were irradiated in air with a Co-60 gamma-radiation source. The preirradiated beads were graft-copolymerized through heating with 4-vinylpyridine in the presence of benzoyl peroxide. Grafting was studied as a function of various reaction parameters and was determined from the increase in the weight of the original polymer and the estimation of pyridine pendants in the homopolymer-free graft copolymer. Although making the polymer basic in character, this modification retained the hydrophilic nature of polyacrylamide. (C) 2002 Wiley Periodicals, Inc. [References: 25]
机译:用Co-60γ辐射源在空气中辐照交联的聚丙烯酰胺珠。通过在过氧化苯甲酰的存在下与4-乙烯基吡啶加热将预辐射的珠子接枝共聚。研究了接枝反应与各种反应参数的关系,该接枝反应是由原始聚合物重量的增加和不含均聚物的接枝共聚物中吡啶侧基的估算来确定的。尽管使聚合物具有碱性,但这种改性保留了聚丙烯酰胺的亲水性。 (C)2002 Wiley Periodicals,Inc. [参考:25]

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