Micro & Nano Letters
·
2018
·Vol. 13
·期 5
·661-665
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IF 0.841
Bin Zhang,Jian Han
The preparation of silicon dioxide (SiO 2 )@poly(acrylic acid) (PAA) microsphere was reported. The modified microspheres can be well dispersed in polyvinyl chloride (PVC) matrix. The structure of SiO 2 @PAA microspheres can be well-controlled and its mixtures with chlorinated polyethylene (CPE) for controlling diisooctyl terephthalate (DOTP) migration from PVC matrix. The results showed that the migration of DOTP was decreased with increasing content of SiO 2 @PAA microspheres, and the use of CPE together with SiO 2 @PAA microspheres has a synergistic effect on the reduction of DOTP migration. Moreover, CPE can enhance the interface combination between SiO 2 @PAA microsphere and PVC, and good dispersibility was observed in PVC/CPE/SiO 2 @PAA composites.
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
✓ 已验证
产品关联
DOI
高影响因子
ADVANCES IN POLYMER TECHNOLOGY
·
2018
·Vol. 37
·期 8
·3650-3658
·
IF 2.073
Zhengping Fang,Xingning Zhang,Meng Xia,Wei Luo,Huiling Hu,Zhiguo Wang,Peixin He,Yuhong Zhang
By multicomponent mechanical blending technology, water-swelling rubber (WSR) was prepared through choosing chlorinated polyethylene (CPE), a superabsorbent polymer (cross-linking poly(sodium acrylate), CPNaAA), and compatibilizer (poly(methyl methacrylate-co-maleic anhydride), P (MMA-co-MAH)) along with other minor additives. P (MMA-co-MAH) was synthesized by grafting maleic anhydride (MAH) onto methyl methacrylate (MMA). Microstructure, water-absorbent properties, and mechanical properties of WSR were investigated. The results showed that P (MMA-co-MAH) boosted the dispersibility between CPNaAA and CPE and led to the increase in Shore A hardness, tensile strength, tensile stress at 100%, and water-swelling behavior, whereas the elongation at break and weight loss were decreased with P (MMA-co-MAH) content. When the content of P (MMA-co-MAH) reached 8 phr, the tensile strength, hardness, and water-swelling ability of dry-state WSR exhibited a maximum value and the percentage loss ratio of CPNaAA reached a relatively low value.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 23
·52322
·
IF 3.057
Yangyang Luo,Mali Xie,Jingxia Zheng,Linjun Shao,Chenze Qi,Yijun Du,Shujing Zhou,Jinjing Li
Polydopamine has been considered as the adhesive of mussels to solid surfaces in biological systems. The development of dopamine and polydopamine functionalized nanofibrous materials is highly desirable for catalysis, drug delivery and tissue engineering. Polydopamine induced surface functionalized solid matrices have been proved to be efficient supporting materials for palladium nanoparticles. In this study, the dopamine monomers were first incorporated into the Pd 2+ /chlorated poly(vinyl chloride) (CPVC) composite nanofibers by electrospinning and then polymerized in basic and reductive solution at elevated temperature to prepare stable polydopamine functionalized CPVC supported palladium composite nanofibers. Scanning electron microscopy images show that uniform and smooth nanofibers with diameter of ~325 nm have been prepared and high temperature can promote their solvent resistance. Fourier transformed infrared and UV–visible (UV–Vis) spectra confirmed the synthesis of polydopamine inside the composite nanofibers. The ultrafine palladium nanoparticles inside the composite nanofibers were characterized by X-ray spectroscopy and transmission electron microscopy. Although these palladium nanoparticles were confined inside the nanofibers, they exhibited excellent catalytic efficiency for the Heck reactions of aryl iodides with alkenes. Moreover, this novel fibrous catalyst could be easily recovered by simple filtration and reused at least five times without obviously loss of initial catalytic activity. In all, we have developed a distinctive way for the synthesis of polydopamine functionalized polymeric materials for catalysis and other applications.
研究领域:
材料科学
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催化化学
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DOI
高影响因子
JOURNAL OF ONCOLOGY PHARMACY PRACTICE
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2022
·
IF 1.416
Hailong Zhou,Yunyun Li,Fan Xu
PurposeOccupational exposure is a long-standing public health concern, which has drawn more and more attention in recent years to the problem of how to carry out occupational protection effectively. Gloves are regarded as the most critical protective equipment for cytotoxic medications. However, there is still little research conducted on the protective performance of gloves made of different materials and the optimal glove combination for cytotoxic agents.MethodsIn this research, a specific instrument intended for glove permeation experiment was designed, with various methods of liquid chromatography-tandem mass spectrometry (LC-MS/MS) developed and validated. By using the specific instrument and LC-MS/MS methods, a study was conducted on the permeation ability of eight selected cytotoxic drugs (fluorouracil, epirubicin (EPI), docetaxel (DCT), methotrexate (MTX), cyclophosphamide (CTX), etoposide (ETP), vincristine sulfate (VCR), and cisplatin derivatives Pt-(DDTC)3) into five kinds of gloves (rubber (RB), nitrile (NT), chlorinated polyethylene (CPE), low-density polyethylene, and polyvinylchloride (PVC) resin) given different contact times. Then, the experimental data were analyzed through a generalized estimation equation and Pearson correlation analysis.ResultsThe results show that within a short period of time (less than five minutes), ETP, CTX, fluorouracil, DCT, and cisplatin passed through five types of gloves but the level of MTX, VCR, and EPI permeation was minimal, despite the duration of contact between the three drugs and the gloves reaching as long as three hours. Furthermore, the permeation of DCT and ETP was found to be positively correlated with time.ConclusionsChlorinated polyethylene and PVC resin perform well in protecting against most cytotoxic drugs and are recommendable for clinical practice. Due to the poor protective ability, RB gloves are not recommended for this purpose. Based on the performance of various gloves in offering protection, the protection grade of two gloves can be deduced. Chlorinated polyethylene + PVC resin, CPE + NT glove combination shows good protective performance against most target drugs and can be recommended for clinical practice.
研究领域:
药理学
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职业健康
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分析化学
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医学科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）