检索结果-南通市图书馆

Chemical resistance tests on PP-ternary nanocomposite for its application in bioreactor liner fabrication

Science China(technological Sciences) 2011年第8期54卷 2217-2223页

作者： FARIDA Yusof salawudeen t.olalekan QASIM H.Shah MA'AN F.Alkhatib SULEYMAN A.Muyibi Nanoscience & Nanotechnology Research Group Department of Biotechnology Engineering Faculty of Engineering International Islamic University Malaysia Department of Mechanical Engineering International Islamic University Malaysia

Continuous usage of bioreactor causes early degradation of most bioreactor liner materials due to the effects of various chemicals, consequently resulting in contamination in the bioprocess. Performance of PP-ternary nanocomposite (PPtN) for its potential application in the fabrication of bioreactor liner material was investigated in this study. the chemical resistance of the composite samples obtained was tested by exposing them to chemicals such as acid, alkaline, water and bacterial solutions, according to AStM 543-06, and their effects on the composite samples were carefully observed. Specifically, the investigation focused on the changes in the physico-mechanical properties of PPtN following long term of exposure to these chemicals. the results show slight increase in the weight and dimensions of samples in the first few days, followed by constant reading for the period of 4 weeks. the performance in terms of physical properties was in the range of PPtN with 0.61% MWCNt > PPtN 0.45% > PPtN 0.17%. the maximum percentage change in tensile properties, observed in this study, was approximately 10% against PPtN (0.17%), which indicates stable mechanical properties of the composite and invariably suggests that the nanocomposites could serve as a better alternative for bioreactor liner fabrication.

关键词： bioreactor chemical resistance liner material MWCNt melt intercalation polypropylene ternary nanocomposite

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

Effect of Processing Conditions in the Preparation of PP-ternary Nanocomposite Using MWCNt as Secondary Filler

引用

材料科学与工程（中英文版） 2011年第2期5卷 139-144页

作者： salawudeen taofeeq olalekan Maan F. Alkathib Faridah Yusof Qasim H. Shah Suleyman A. Muyibi Department of Biotechnology Engineering Faculty of Engineering International Islamic University Malaysia Kuala Lumpur 50728 Malaysia Department of Mechanical Engineering International Islamic University Malaysia Kuala Lumpur 50728 Malaysia

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

Clay Characterization and Optimisation of Bleaching Parameters for Palm Kernel Oil Using Alkaline Activated Clays

引用

Journal of Minerals and Materials Characterization and Engineering 2014年第6期2卷 586-597页

作者： t. O. salawudeen A. O. Arinkoola M. O. Jimoh B. A. Akinwande Chemical Engineering Department Ladoke Akintola University of Technology Ogbomoso Nigeria Department of Food Science and Engineering Ladoke Akintola University of Technology Ogbomoso Nigeria

the optimum bleaching parameters (clay dose and bleaching time) for palm kernel oil were determined using alkaline activated clay locally sourced in Nigerian. Activation was carried out using NaOH and KOH. the raw and activated clay samples were characterized using XRD and XRF. Bleached oil was analyzed for % colour reduction (%CR) and percentage free fatty acid (FFA) content before and after bleaching. Alkaline activation resulted to total dissolution of Mg2+ and Ca2+ ions in the octahedral sheet. the activation also affected the tetrahedral sheet by reducing the % composition of the silica and alumina ion after the modification. the results showed that alkaline activation had significant effect on mineralogical and chemical composition of the clay samples. the optimum bleaching conditions (clay dosage and bleaching time) of 3%/weight of oil and 30 mins resulted in 33.3% CR and %FFA of 2.2. It was discovered that NaOH activated clay resulted to higher %CR while KOH activated clay shows affinity for reduced %FFA but at higher concentration of 5 M. this research has further established that alkaline activated clays are feasible alternative for acid activated clays in vegetable oil bleaching.

关键词： Bleaching Optimisation Clay Characterization Palm Kernel Oil

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

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

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

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：