壳聚糖衍生物基丙烯酸接枝高吸水性聚合物的制备及性能研究

IF 2.6 4区 化学 Q3 POLYMER SCIENCE
Qingshan Liu, Lei Ji, Wenjing Lin, Yingjuan Sun, Xiaofeng Lin, Yanqing Xie, Jinting Xie, Guobin Yi
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引用次数: 0

摘要

高吸水性聚合物(sap)具有提高机械负荷(AUL)下的吸收能力和增强的抗菌性能,在卫生应用中仍然具有挑战性。本研究首先对壳聚糖进行改性,制备季铵化羧甲基壳聚糖(QCMC),提高其水溶性和抗菌性能,然后以壳聚糖为骨架,引入丙烯酸(AA)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)单体,通过接枝共聚得到新型高吸水性聚合物(P(AA-AMPS/QCMC))。采用FT-IR、XRD、SEM、TG等分析表征了样品的结构。对中和度、单体浓度、交联剂含量等影响吸附量的因素进行了优化。由于凝胶堵塞,传统的sap表现出低AUL和缓慢的吸收率。为了克服这些限制,应用表面交联来提高AUL和吸收率。在去离子水和0.9% wt.% NaCl溶液中的吸附量分别为634 g/g和78.8 g/g,并在30 min内达到溶胀平衡。QCMC用量为3%时,对金黄色葡萄球菌(S. aureus)和大肠杆菌(E. coli)的抑制率分别为88.9%和87.7%。探索性生物降解性试验表明,这些聚合物具有可降解性。本研究证明了这些聚合物在卫生领域的潜在应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and properties of acrylic acid grafted onto chitosan derivative-based superabsorbent polymers

Superabsorbent polymers (SAPs) with improved absorbency under mechanical load (AUL) and enhanced antimicrobial properties in hygiene applications are still challenging. In this study, chitosan was modified to prepare quaternized carboxymethyl chitosan (QCMC) to improve water solubility and antimicrobial properties and then used it as backbone to obtain a novel type of superabsorbent polymers (P(AA-AMPS/QCMC)) by introducing acrylic acid (AA) and 2-acryloylamino-2-methylpropanesulfonic acid (AMPS) monomers through grafted copolymerization. FT-IR, XRD, SEM, and TG were used to analyze and characterize the structure of samples. Different factors influencing the absorption capacity, such as neutralization degree, monomer concentration, and crosslinker content, were optimized. Conventional SAPs exhibited low AUL and slow absorption rates due to gel blockage. To overcome these limitations, surface crosslinking was applied to improve both AUL and absorption rates. The SAPs showed absorption capacities of 634 g/g in deionized water and 78.8 g/g in 0.9 wt.% NaCl solution, and reached swelling equilibrium within 30 min. With only a 3% QCMC dosage, the inhibition rates against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) were 88.9% and 87.7%, respectively. Exploratory biodegradability tests indicated that these polymers possess degradable properties. This study demonstrates the potential applications of these polymers in hygiene.

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来源期刊
Journal of Polymer Research
Journal of Polymer Research 化学-高分子科学
CiteScore
4.70
自引率
7.10%
发文量
472
审稿时长
3.6 months
期刊介绍: Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.
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