• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Graphene oxide/polyacrylamide/carboxymethyl cellulose sodium nanocomposite hydrogel with enhanced mechanical strength: preparation, characterization and the swelling behavior
【24h】

Graphene oxide/polyacrylamide/carboxymethyl cellulose sodium nanocomposite hydrogel with enhanced mechanical strength: preparation, characterization and the swelling behavior

机译：具有增强的机械强度的氧化石墨烯/聚丙烯酰胺/羧甲基纤维素钠纳米复合水凝胶：制备，表征和溶胀行为

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A ternary graphene oxide (GO)/polyacrylamide (PAM)/carboxymethyl cellulose sodium (CMC) nanocomposite hydrogel with improved compressive strength was fabricated through free radical polymerization of AM in the presence of GO and CMC in an aqueous system, followed by ionically crosslinking CMC by aluminium ions. The compressive strength of the ternary hydrogel was dramatically enhanced as compared to that of the pristine PAM/CMC hydrogels with the incorporation of an appropriate amount of 1.6 wt% GO sheets. Fourier transform infrared spectroscopy (FT-IR) characterization demonstrated that hydrogen bonds formed between the oxygen-containing groups of the GO sheets and the N-H bond of PAM. This strong interaction resulted in the dense structure of the nanocomposite hydrogel and improved mechanical strength. Moreover, the GO content significantly influenced the swelling behaviors of the composite hydrogels. The kinetic study revealed that the swelling behaviors of nanocomposite hydrogels followed the pseudo-second-order dynamic equation. The strategy of combining GO reinforcement with a double network provides an advantageous protocol for the formation of a high-strength hydrogel, which may be used in bioengineering and drug delivery systems.
机译：在水体系中，在GO和CMC存在下，通过AM自由基聚合，制备了具有改善的抗压强度的三氧化石墨烯（GO）/聚丙烯酰胺（PAM）/羧甲基纤维素钠（CMC）纳米复合水凝胶。通过铝离子。与原始的PAM / CMC水凝胶相比，三元水凝胶的压缩强度显着提高，其中加入了适量的1.6 wt％的GO片材。傅立叶变换红外光谱（FT-IR）表征表明，GO片的含氧基团与PAM的N-H键之间形成了氢键。这种强烈的相互作用导致了纳米复合水凝胶的致密结构并提高了机械强度。此外，GO含量显着影响复合水凝胶的溶胀行为。动力学研究表明，纳米复合水凝胶的溶胀行为遵循伪二级动力学方程。 GO增强与双网络相结合的策略为形成高强度水凝胶提供了一种有利的方案，可用于生物工程和药物输送系统。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号