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首页> 外文期刊>Journal of Polymers and the Environment >Novel Environmentally Friendly Superabsorbent Hydrogel Hybrids from Synthesized Star-Shaped Bio-based Monomers and Acrylic Acid
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Novel Environmentally Friendly Superabsorbent Hydrogel Hybrids from Synthesized Star-Shaped Bio-based Monomers and Acrylic Acid

机译：来自合成星形生物基单体和丙烯酸的新型环保超吸收性水凝胶杂交物

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摘要

During the past decades, production and applications of petroleum-based superabsorbents have grown dramatically; currently, superabsorbents are produced from acrylic acid, which consequently increase the environmental concerns. The high consumption rate of superabsorbent on the one hand, and their persistence in the environment from the other hand would make the waste of this material a potential hazard for the environment. These materials are not biodegradable, and if degraded hazardous derivatives would be released into soil and water. The current work presents the synthesis and the performance of a novel superabsorbent hydrogel, based on star-shaped bio-based compartments and acrylic acid. Herein, the synthesis of two bio-based star-shaped monomers will be reported based on the condensation reaction between hydroxyl and carboxylic acid end groups of a bio-acid and a bio-alcohol. The first monomer was synthesized from glycerin, succinic acid, lactic acid, itaconic acid, and acrylic acid. The second monomer was synthesized from glycerin, lactic acid, and methacrylic acid. The monomers structures were characterized via FT-IR and (HNMR)-H-1 spectroscopies. The different portions of biobased monomers (10, 30, 50, and 70 wt%) were used in combination with the acrylic acid monomer to form hybrid superabsorbents. The swelling properties and the absorbency under load (AUL) of superabsorbents were investigated in turn. The maximum absorption capacities (398.49 and 90.10g g(-1) in water and saline solution, respectively) were observed when 30 wt% of acrylic acid backbone of the superabsorbent was replaced with the bio-based monomer. Moreover, economic and environmental profiles of the hybrid SAPs have been evaluated. The comparative environmental assessment performed using life cycle analysis method, based on the material and energy balances obtained from the available literature. While the economy of the hybrid SAPs production still suffers from the high price of the employed raw biomaterials during manufacturing, the better environmental profiles obtained for the hybrid SAPs.
机译：在过去的几十年中，石油基超吸收剂的生产和应用急剧增长;目前，超吸收剂由丙烯酸生产，从而增加了环境问题。从另一方面，超吸收剂的高消耗率，以及它们在环境中的持久性将使这种材料浪费潜在的环境危害。这些材料不可生物降解，如果脱脂的危险衍生物将被释放到土壤和水中。目前的工作介绍了一种基于星形生物基隔室和丙烯酸的新型超吸收水凝胶的合成和性能。这里，将基于生物酸和生物醇的羟基和羧酸端基之间的缩合反应来报告两个生物基星形单体的合成。第一单体由甘油，琥珀酸，乳酸，衣康酸和丙烯酸合成。第二单体由甘油，乳酸和甲基丙烯酸合成。单体结构通过FT-IR和（HNMR）-H-1光谱表征。双组织单体（10,30,50和70wt％）的不同部分与丙烯酸单体组合使用以形成杂交超吸收剂。依次研究了超吸收剂的膨胀性和载荷（AUL）下的膨胀性和吸收性。当用基于生物基单体的30wt％的超吸收性丙烯酸骨架被替换为30重量％的丙烯酸骨架，分别观察到水和盐水溶液中的最大吸收容量（398.49和90.10gg（-1）。此外，已经评估了杂种SAP的经济和环境谱。使用生命周期分析方法进行的比较环境评估，基于从可用文献获得的材料和能量余额。虽然杂交SAP的经济性仍然存在于制造过程中使用的原生生物材料的高价格，但是为杂交SAP获得的更好的环境型材。

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