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首页> 外文期刊>Journal of Polymers and the Environment >Epoxidized and Cyclocarbonated Star-Shaped Macromolecules as Bio-Based Internal and External Crosslinkers for Superabsorbent Polymer Hydrogels
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Epoxidized and Cyclocarbonated Star-Shaped Macromolecules as Bio-Based Internal and External Crosslinkers for Superabsorbent Polymer Hydrogels

机译：环氧化和环碳酸碳酸的星形大分子作为基于生物吸收性聚合物水凝胶的生物和外部交联剂

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摘要

Regarding the sustainability point of view, this study is dedicated to the use of two bio-based star-shaped crosslinkers for superabsorbent hydrogel (SAP) applications as replacement of fossil-based counterparts. The epoxide crosslinker (E-st-G-SA) was synthesized from the reaction of a star-shaped macromonomer based-on glycerol and succinic acid with epichlorohydrin. The second crosslinker (C-st-G-SA) was prepared through the CO2 fixation reaction of E-st-G-SA. After characterization of crosslinkers by H-1 NMR and FTIR spectroscopies, E-st-G-SA was used as an internal crosslinker for SAP formulations. Next, the potential of E-st-G-SA and C-st-G-SA as surface crosslinkers for the abovementioned SAP was examined and C-st-G-SA presented a significant improvement of swelling under load up to - 38%, so it was selected as the preferred surface crosslinker for additional investigations. Moreover, rheological properties of the surface crosslinked SAPs demonstrated a higher swollen gel strength compared to that of intact SAP. The thermal stability of the intact and surface crosslinked samples was compared and the result showed an overall similar trend. Finally, the antibacterial activity of samples was evaluated and the results presented a satisfactory antibacterial property especially against S. aureus bacterium for the surface crosslinked sample but not for the intact one.
机译：关于可持续性观点来看，本研究致力于使用用于超吸收性水凝胶（SAP）应用的两种生物基星形交联剂作为替代化石的对应物。通过基于甘油和琥珀酸的星形大分子单体的反应合成环氧化物交联剂（E-ST-G-SA）与表氯醇的反应合成。通过E-ST-G-SA的CO 2固定反应制备第二交联剂（C-ST-G-SA）。通过H-1 NMR和FTIR光谱表征交联剂和FTIR光谱，E-ST-G-SA被用作SAP配方的内交联剂。接下来，研究了E-ST-G-SA和C-ST-G-SA作为上述SAP的表面交联剂的电位，C-ST-G-SA呈现出高达-38％的负荷溶胀的显着改善，所以选择其作为优选的表面交联剂，用于额外研究。此外，与完整的SAP相比，表面交联的SAP的流变性能证明了更高的溶胀凝胶强度。比较了完整和表面交联样品的热稳定性，结果显示了总体相似的趋势。最后，评价样品的抗菌活性，结果呈现出令人满意的抗菌性质，尤其是针对表面交联样品的金黄色葡萄球菌细菌，但不适用于完整的抗菌性。

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  • 来源
    《Journal of Polymers and the Environment》 |2020年第6期|1684-1695|共12页
  • 作者

    Karami Zeinab; Naderi Parvin; Kabiri Kourosh; Zohuriaan-Mehr Mohammad Jalal;

  • 作者单位

    Iran Polymer & Petrochem Inst Polymer Proc Fac Adhes & Resin Dept POB 14965-115 Tehran Iran;

    Islamic Azad Univ Sci & Res Branch Dept Polymer Engn Tehran Iran;

    Iran Polymer & Petrochem Inst Polymer Proc Fac Adhes & Resin Dept POB 14965-115 Tehran Iran|Iran Polymer & Petrochem Inst BIOBASED Div Biobased Monomers & Polymers Div POB 14965-115 Tehran Iran;

    Iran Polymer & Petrochem Inst Polymer Proc Fac Adhes & Resin Dept POB 14965-115 Tehran Iran|Iran Polymer & Petrochem Inst BIOBASED Div Biobased Monomers & Polymers Div POB 14965-115 Tehran Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Succinic acid; Glycerol; Star-shaped; Superabsorbent; Surface crosslinking; CO2;

    机译：琥珀酸;甘油;星形;超吸收剂;表面交联;CO2;

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