NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 42
·18166-18176
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IF 2.7
Jing Xiao,Linshan Peng,Ailan Ouyang,Xin Mo,Yiping Yao,Chunyan Wang,Chunpei Yan
A phosphonate-functionalized Zr@FMA material was prepared in this work as an adsorbent for the efficient recovery and enrichment of Th(IV) from aqueous solutions. The adsorbent, prepared by functionalizing Zr@FMA with alendronate sodium (ALS), a well-known active bisphosphonate, demonstrates good water stability and a large surface area, making it suitable for the separation and enrichment of Th(IV) in aqueous solutions. A comparison of the adsorption behavior of Th(IV) on Zr@FMA-ALS with the unfunctionalized Zr@FMA reveals that the introduction of phosphonate groups significantly enhances the maximum adsorption capacity and rate of Zr@FMA-ALS. The adsorption data aligns well with the Langmuir isotherm model, suggesting a uniform distribution of Th(IV) on the adsorbent surface in a monolayer coverage. Thermodynamic analysis indicates an endothermic and spontaneous adsorption process. Zr@FMA-ALS also shows excellent selectivity for Th(IV) over other metal ions in mixed solutions. Insights into the adsorption mechanism are provided through SEM, XPS, and FT-IR analyses, indicating that ALS molecules play a crucial role in capturing Th(IV) on the surface of Zr@FMA-ALS.
研究领域:
化学工程
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材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2023
·Vol. 30
·期 9
·1-8
·
IF 2.8
Qiao Xiaoguang,Dong Xin,shi Ge,He Yanjie,Pang Xinchang
The postsynthesis polymeric modifications by grafting from the active sites were the primary focus of the structurally tailored and engineered macromolecular (STEM) gels. Therefore, Reversible-deactivation radical polymerization (RDRP) techniques have been employed to more precisely tailor and tune STEM gels. In contrast to atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chain transfer polymerization (RAFT), nitroxide-mediated polymerization (NMP) is known to have the advantages of simple components and pure products. Here we report the preparation of polydimethylsiloxane (PDMS) composite gel networks through oxygen tolerance NMP process, with tert-Butyl acrylate (tBA) and fluorinated monomer 2-(Perfluorooctyl)ethyl methacrylate (FMA) as functional comonomers. Compared with conventional radical polymerization (FRP) method, composite gels prepared through NMP method showed higher swelling rate and elongation at break, which proved that the network structure formed by NMP was more uniform. In addition to better thermal stability and toughness, the dormant polymer chain could be reactivated and lead to the “living” post-modification of PDMS gel matrix.
研究领域:
材料科学
·
高分子化学
·
材料工程
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产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Jie Yu,Hui Yang,Haijun Ji,Xin Zhang,Rui Wang,Shuainan Zhao,Runguo Wang,Liqun Zhang
Most rubber products come from petrochemical resources, which are increasingly in short supply. Rubber products that formed irreversible chemical bonds in the vulcanization process are difficult to recycle, resulting in a serious waste of resources. Therefore, it is important to prepare a kind of reprocessable biobased elastomers. Using furfuryl methacrylate (FMA) as the modified monomer, poly(dibutyl itaconate-myrcene-furfuryl methacrylate) (PDBIMFA) was synthesized by high-temperature emulsion polymerization successfully. The structure and compositions of PDBIMFA were characterized by Fourier transform infrared and 1H NMR, and the effects of different FMA contents on the structures and properties of PDBIMFA were systematically studied. Based on the Diels–Alder reaction, bismaleimide (BMI) and carbon black (CB) were introduced into PDBIMFA as cross-linking agents and reinforcing fillers, respectively, by the melt blending method, and PDBIMFA-BMI elastomer materials and CB/PDBIMFA-BMI elastomer composites with thermo-reversible cross-linking characteristics were prepared. The effects of the ratio of FMA and BMI on the mechanical properties of PDBIMFA-BMI were studied. PDBIMFA-BMI and CB/PDBIMFA-BMI were reprocessed twice, and the recovery rate of tensile strength was both more than 90%. The addition of CB was found to play a reinforcing role in the elastomer and with the introduction of the amount of CB, the reprocessability of composite remained at a good level. It is hoped that this research will provide a new strategy for the sustainable development of bio-based elastomer materials.
研究领域:
材料科学
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高分子化学
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环境科学
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可持续材料
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2019
·
IF 4.309
Benfeng Zhu,Jingjing Yang,Jiao Liu,Yanbin Meng,Xiaoqing Du,Chao Cai,Zhao Zhang
To obtain amphiphilic polymers, fluorinated groups were successfully embedded in polyacrylates. The amphiphilic polymers were synthesized by free radical-initiated copolymerization using hydrophilic acrylate monomers and hydrophobic 2-perfluorooctylethyl methacrylate (FMA). 1H NMR spectroscopy and Fourier transform infrared results indicated that the fluorinated monomer FMA was successfully embedded in the polymers. The surfaces of the amphiphilic polymers were subsequently characterized by contact angle measurement, atomic force microscopy, and X-ray photoelectron spectroscopy, showing that a well-designed amphiphilic structure with fluorinated groups in the polymers was fabricated with the increase in the number of FMA units (n). Protein adsorption experiments indicated that, in addition to the surface chemical composition and roughness of the polymer, the fluorinated degree of the bulk/internal polymer layer (k) also plays a significant role in its bioadhesion behavior via adjusting the charge state of the polymer surface. With the decrease in k, the critical factor determining the protein adsorption gradually turns from the polymer’s surface to its internal area, and the minimum adsorption for both bovine serum albumin and human plasma fibrinogen on the synthesized polymer surface occurs when k is approximately 12.
研究领域:
材料科学
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聚合物化学
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生物医学工程
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表面科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）