检索结果-南通市图书馆

Strengthening of polysulfone membranes using hybrid mixtures of micro- and nano-scale modifiers

Frontiers of Chemical Science and Engineering 2018年第1期12卷 174-183页

作者： Peyman P. Selakjani Majid Peyravi Mohsen Jahanshahi Hamzeh Hoseinpour Ali S. Rad Soodabeh Khalili Nanotechnology Research Institute Faculty of Chemical Engineering Babol Noshirvani University of Technology Babol Iran Nuclear Science and Technology Research Institute (NSTRI) Tehran Iran Department of Chemical Engineering Qaemshahr Branch Islamic Azad University Qaemshahr Iran

Polysulfone （PSf） membranes were modified by either a new organic modifier （sulfonated poly（ether sulfide sulfone）, SPESS） or a traditional modifier （rice hulk）. These membranes were further reinforced with either multi-walled carbon nanotubes （MWCNTs） or silica nanoparticles. Having a dye rejection of 98.46%, the reinforced membranes increased more than 50% in strength but no change in solution flux was observed. The morphological and roughness studies were conducted using scanning electron microscopy and atomic force microscopy. Moreover, the PSF membranes were also characterized by differential scanning calorimetry. Modifying the membranes with organic modifier or nanofiller increases the glass transition temperature （Tg）. The highest Tg and strength were observed for the PSf-SPESS- MWCNT membrane. SPESS decreases surface roughness but MWCNT increases roughness on the nanoscale. All membranes show a bimodal pore size distribution, whereas the PSf-SPESS-MWCNT membrane exhibits a relatively uniform distribution of macroscopic and microscopic pores.

关键词： polysulfone membrane mechanical proper- ties micro- and nano-modification binary and ternary system dye removal

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthesis and characterization of bulk composite Fe-Si-B alloys with small concentration of Nb and Mo

引用

Acta Metallurgica Sinica(English Letters) 2010年第6期23卷 401-408页

作者： S.Bez I.Betancourt I.A.Figueroa Institute for Materials Research National Autonomous University of Mexico (UNAM)

The preparation and some mechanical, thermal and magnetic properties of the as cast bulk composite Fe72B19.2Sin.sM4 （M=Nb, Mo） alloys obtained by suction casting are presented and discussed. The microstructrural results showed the existence of a crystalline a-Fe（Si） phase embedded in a glassy matrix. The values of microhardness （/Iv） and yield strength （ay） for the Nb-containing alloy are exceptionally high, i.e. （12.65~0.3） GPa and （4.22~0.10） GPa, respectively. The saturation polarization values are found to be as high as 1.24 T for both composite ~11oys. It is thought that the interplay between the secondary crystalline phases and amorphous matrix could be responsible for the mechanical and magnetic behaviour of these alloys.

关键词： Bulk composite alloys Magnetic properties mechanical proper- ties Thermal stability and suction casting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：