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Modification of Polyethylene With Itaconic acid

机译:衣康酸对聚乙烯的改性

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Itaconic acid(KI)grafting onto PE-LD in the presence of dicumyl peroxide(DCP)was done with the aim to make the product more hydrophilic what should facilitate the polymer waste decomposition in the environment.The two-step process was realized in the single screw extruder and various consentrations of KI(3-10 wt.%)and DCP(up to 1.1 wt.%)were used.The products of KI thermal decomposition were identified using Py/Gc/MS method(Figs.2 and 3).FT-IR analysis excluded their presence in the grafted compositions while suggested KI grafting(Figs,4 and 5).It was found,using aqueous extraction method,that the higher KI and DCP concentrations the higher grafting degree(Table 1).However,in the compositions containing>3 wt.% of KI,polymer crosslinking did not occur(Table 3)at the whole range of DCP concentration.The effects of KI and DCP concentrations in the compositions on their tensile properties were characterzed.
机译:在过氧化二枯基(DCP)存在下,将衣康酸(KI)接枝到PE-LD上的目的是使产品更具亲水性,从而有利于聚合物废物在环境中的分解。使用单螺杆挤出机和KI(3-10 wt。%)和DCP(最高1.1 wt。%)的不同允许量。使用Py / Gc / MS方法鉴定KI热分解产物(图2和3 FT-IR分析排除了它们在接枝组合物中的存在,同时建议进行KI接枝(图4和5)。使用水萃取法发现,KI和DCP浓度越高,接枝度越高(表1)。然而,在包含> 3重量%的KI的组合物中,在DCP浓度的整个范围内都没有发生聚合物交联(表3)。表征了KI和DCP浓度在组合物中对它们的拉伸性能的影响。

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