杂志纳米材料

背景。倍他米松作为皮质类固醇药物通常用于类风湿性关节炎的治疗。不幸的是，倍他米松是低水溶性的药物和其效率是低的。因此，一个有吸引力的策略是倍他米松的使用基于聚合物的胶束载体损坏的联合靶向递送。方法。菊粉接枝硬脂酸酯（在-G-ST）经由的硬脂酰氯和菊粉，然后通过FT-IR和H-NMR的反应合成。在-G-圣形成在倍他米松的存在胶束。将所制备的聚合物胶束进行表征尺寸，zeta电位，载药量，粒子的形态，临界胶束浓度（CMC），和包封效率。倍他米松所以缓释聚合物胶束通过采用G-圣开发。结果。The measurement of particle size showed a mean diameter of 60 and 130 nm for 10% and 20% drug-loaded micelles, respectively, and SEM showed that the particle’s morphologies are spherical. Zeta potential measurement for the drug-containing micelles showed a value of -11.8 mV. Drug loading efficiency and the encapsulation efficiency were 6.36% and 63.6%, as well as 18.97% and 94.88% for 10% and 20%, respectively. 20% drug-loaded polymer showed a small burst release of betamethasone at the first 3 h which was followed by sustained release in the next 24 h. Furthermore, the formula with 10% exhibited good sustained release properties except for the minor initial burst release.结论。数据从zeta电势，CMC，载药量，和体外药物释放研究表明，在-G-圣聚合物胶束可以是用于疏水性药物倍他米松等有效递送的合适候选者。

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聚丙烯纳米复合材料（PP）/石墨烯是通过熔融共混制备。在流动和纳米复合材料的机械性能的石墨烯的剂量的效果进行了研究。断裂面的形态通过扫描电子显微镜（SEM）进行了表征。纳米复合材料的石墨烯同时增强拉伸和冲击性能。A 3.22% increase in tensile strength, 39.8% increase in elongation at break, and 26.7% increase in impact strength are achieved by addition of only 1 wt.% of graphene loading. The morphological behavior indicates the fracture surface of PP/graphene is more rough than that of pure PP.

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我们研究了基于有限元分析（FEA）模拟和变形测试的Au纳米网（AuNMs）的机械性能。的机械柔韧性的模拟结果表明，聚乙烯对苯二甲酸酯（PET）基底可以释放AuNMs的应力下的机械拉伸和弯曲，拉伸AuNMs的位移产生了促进2％，弯曲AuNMs的位移产生下缓冲的3.5％促进of PET substrate at 5 GPa yield strength of nanoscale Au. The stress and displacement distribution of the AuNMs/PET is demonstrated and analyzed. The further deformation tests of AuNMs under compressive and tensile loading indicate that the simulation data are in good agreement with experimental results. This paper is conducive to understanding the mechanical behavior and corresponding structural response and structural fracture dynamics of AuNMs.

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一种Ni-P-（溶胶）的Al₂Ø₃涂层通过直流电镀的方法在Q235钢的表面上制得。此方法用溶胶 - 凝胶法和电沉积技术相结合，而不是传统的纳米粉末的分散体，以制备高度分散的氧化物纳米颗粒增强的复合材料。温度，pH值，和电流密度和Al的影响₂Ø₃复合涂层的硬度溶胶进行了调查。该涂层的表面形态和结构经扫描电子显微镜和能量色散光谱法，分别表征。在中间层的存在的涂层的耐腐蚀性，通过电化学测定中通过在室温下的开路电势测量的3.5％的NaCl溶液进行评价。涂层的硬度和耐磨损性是由一个微压痕仪和摩擦磨损机分别测定。结果表明，铝₂Ø₃溶胶可以有效地提高Ni-P合金涂层结构和细化晶粒。When the bath temperature was 55°C, the pH value was 4.5, the amount of sol was 80 mL/L, the current density was 1 A/dm², and the hardness of the nanosol coating was 569 HV. Compared with Ni–P, the friction coefficient increases slightly, but the wear rate was only 。的耐腐蚀性也比Ni-P涂层的更好。

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经修饰的钛/的SnO₂使用稀土制备-Sb锰/ RE电极（Re）的钆，铕，铈，和Er和锡的各种摩尔比并通过热分解锰。为了研究电极的电催化性能，苯酚施加作为模型污染物。脱酚在实验范围内追求pseudofirst级动力学。The experimental outcomes show that the phenol degradation at ~95% and ~97% was found in Mn (1 mol%)/Re and Mn (2 mol%)/Re electrodes after treatment for 140 min. Accelerated lifetime testing showed that the best-accelerated service life could be measured only in Mn (3 mol%)/Re and Mn (4 mol%)/Re compared with other prepared Mn (0%,1%, and 2%)/Re electrodes under the condition of 500 mAcm^-2电流密度在这项研究中。然后将修饰的电极进行了表征，包括析氧电势（OEP），晶体结构，并且电极涂层的表面组成。

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本文提出了一种棒状弹性基底模型来研究考虑非定域性和表面能的影响纳米线的弹性基底系统的轴向响应。基于热力学 - 应变梯度模型被采用，而位移型Gurtin-默多克表面理论被用来考虑表面能捕捉到杆体材料的非定域性。为了表征周边条 - 底物相互作用时，Winkler地基模型采用。以直接的方式，而该虚拟位移原理的框架内，被一致地获得系统平衡条件和相应的自然边界条件，就能获得系统的兼容性的条件。三个数值模拟进行的调查的特点和纳米线的弹性基底系统的行为：第一导通以显示所提出的模型，以消除固有的非局部Eringen微分模型自相矛盾行为的能力;第二个是用于将纳米线的弹性基底系统的特征分析的反应;第三个是旨在展示系统有效的杨氏模量的几个系统参数的依赖性。

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