Synthesis and properties of radiopaque polymer hydrogels II: copolymers of 2,4,6-triiodophenyl- or N-(3-carboxy-2,4,6-triiodophenyl)- acrylamide and p-styrene sulfonate
作者:Masahiko Okamura、Takeshi Yamanobe、Tomohiro Arai、Hiroki Uehara、Tadashi Komoto、Seiichi Hosoi、Tatsuo Kumazaki
DOI:10.1016/s0022-2860(01)00710-4
日期:2002.1
In order to pursue a possibility of application of radiopaque polymer hydrogels to vascular embolization, studies were made on synthesis of iodine containing copolyanions and properties of their hydrogels with polycation via formation of polyion complexes (PIC). Acrylamide derivatives having triiodophenyl groups were synthesized and copolymerized with sodium styrene sulfonate (SS) under several conditions
摘要 为了探索不透射线聚合物水凝胶在血管栓塞中应用的可能性,研究了含碘共聚阴离子的合成及其与聚阳离子形成聚离子复合物(PIC)的水凝胶的性质。合成了具有三碘苯基的丙烯酰胺衍生物,并在几种条件下与苯乙烯磺酸钠 (SS) 共聚。发现 N-(3-羧基-2,4,6-三碘苯基)-丙烯酰胺 (CIPA) 和 2,4,6-三碘苯基丙烯酰胺 (TIPA) 单体与 SS 有效共聚,而 N-烯丙基-2,3 ,5-三碘苯甲酰胺 (ATIBA) 很难共聚。通过混合聚阴离子的水溶液制备水凝胶,即共聚物(PCIPA 和 PTIPA)和聚烯丙胺(PAAn)。PCIPA/PAAn 和 PTIPA/PAAn 水凝胶的 13 C NMR 光谱给出了聚阴离子和聚阳离子的峰。这意味着仍然存在游离的阴离子和阳离子单体单元,由于空间障碍,它们没有形成离子对。1 HT 2 的时间依赖性显示出PSS/PAAn 的快速增加和平稳,以及PCIPA/PAAn