苯乙烯磺酸钠在聚乙烯上的辐射接枝后聚合反应。

Radiation graft post-polymerization of sodium styrene sulfonate onto polyethylene.

作者信息

Kitaeva Natalia K, Duflot Vladimir R, Ilicheva Natalia S

机构信息

Branch of FSUE "Scientific and Research Institute of Physical Chemistry named after L.Ya. Karpov", 109 km, Kievskoye Shosse, Obninsk, 249033 Kaluga Region Russia.

出版信息

J Radioanal Nucl Chem. 2013;298(2):1041-1047. doi: 10.1007/s10967-013-2688-3. Epub 2013 Aug 21.

DOI:10.1007/s10967-013-2688-3

PMID:26224942

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4514663/

Abstract

Post-irradiation grafting of sodium styrene sulfonate (SSS) in the presence of acrylic acid (AA) has been investigated on polyethylene (PE) pre-exposed to gamma radiation at room temperature in the air. Special attention was paid to the effect of low molecular weight salt additives on the kinetics of graft copolymerization of SSS and AA. The presence of SSS links in the grafted PE copolymers was detected by the methods of UV and FTIR spectroscopy. Based on the FITR spectroscopy and element analysis data, a mechanism was proposed for graft copolymerization of SSS and AA onto PE. The mechanical properties of the graft copolymers were studied. It was established that PE copolymers grafted with sulfonic acid and carboxyl groups have higher strength characteristics (16.3 MPa) compared to the samples containing only carboxyl groups (11 MPa).

摘要

在空气中室温下预先暴露于γ辐射的聚乙烯（PE）上，研究了在丙烯酸（AA）存在下苯乙烯磺酸钠（SSS）的辐照后接枝情况。特别关注了低分子量盐添加剂对SSS和AA接枝共聚动力学的影响。通过紫外和傅里叶变换红外光谱法检测接枝PE共聚物中SSS链的存在。基于傅里叶变换红外光谱和元素分析数据，提出了SSS和AA在PE上接枝共聚的机理。对接枝共聚物的力学性能进行了研究。结果表明，与仅含羧基的样品（11MPa）相比，接枝有磺酸基和羧基的PE共聚物具有更高的强度特性（16.3MPa）。