小型中空吹塑料的研制

采用CaCO3和HDPE对LLDPE进行改性,研究了CaCO3和HDPE用量对共混体系力学性能的影响。结果表明,当m（LLDPE）∶m（HDPE）∶m（CaCO3）=55∶30∶15时,体系的综合力学性能最好。HDPE对LLDPE具有增强增韧作用,此外,添加少量的CaCO3能显著改善共混材料的力学性能,所制得的改性材料可用于生产小型中空制品。     

阳极氧化挂具的设计与应用

草酸阳极氧化、硬质阳极氧化处理工艺电流密度大、电压高、产热量大,必须采用压缩空气不断搅拌槽液,由此可能导致工件与挂具接触不良,引起工件烧伤和报废。设计和制作了专用挂具,保证挂具与导电杆连接牢固,挂具将工件夹紧,又便于拆卸,     

Polymeric hollow fiber membranes for bioartificial organs and tissue engineering applications

Polymeric hollow fiber (HF) membranes are commercially available, i.e. microfiltration and ultrafiltration cartridges or reverse osmosis and gas separation modules, to be applied for separation purposes in industry, for instance to recover valuable raw materials or products, or for the treatment of end‐of‐pipe wastes to avoid environmental impacts, to regenerate or treat waters for reuse and for the separation of key components or clarification in food and beverage industries. They have also shown important benefits as hemodialyzers, hemodiafiltration or plasma purification devices in patients with liver or kidney damage. The good mass transport properties characterizing the polymeric HFs have opened new research areas of application in the biomedical field, such as the tissue engineering (TE) and the construction of bioartificial organs (BAO). In TE, the HFs act as scaffolds or supports and/or allow high permeance of nutrients and waste removal for cell proliferation and differentiation. In BAO, HFs are used for the fabrication of bio‐hybrid constructs that replace the damaged organs of the patient or can be used as in vitro models for therapeutic studies. This review presents the state‐of‐the‐art concerning preparation and application of HFs for TE and BAO and discusses the challenges and future perspectives of the HFs in both fields. © 2014 Society of Chemical Industry     

Sugar-based surfactants for consumer products and technical applications

Sugar-based surfactants, such as sorbitan esters, sucrose esters, alkyl polyglycosides, and fatty acid glucamides gain increasing attention due to advantages with regard to performance, health of consumers, and environmental compatibility compared to some standard products. Sorbitan esters are well established products, which are mainly used as leather and textile auxiliaries or as emulsifiers for food at a volume of approx. 20,000 t/a. Sucrose esters are relatively hydrophobic products. The actual market size is estimated to be < 4,000 t/a – the main application being emulsifiers for food and cosmetics. Their use is still limited. Alkyl polyglycosides and fatty acid glucamides represent a perfect amphiphilic structure with excellent surface activity as well as solubility due to highly selective syntheses. For alkyl polyglycosides industrial processes have been developed in the past couple of years and a total capacity of ca. 80,000 t/a has been established. They are mainly used for cosmetic, manual dishwashing, and detergent applications. Fatty acid glucamides to date are exclusively used by one company in liquid and powdered detergents. The estimated production capacity is approx. 40,000 t/a. Comparable in their performance profile as co-surfactants, both products differ in their raw material base: whereas in the case of the fatty acid glucamides methylamine is incorporated in the product, alkyl polyglycosides are completely based on renewable resources. This, combined with very good performance and mildness, could be one reason why alkyl polyglycosides are the most successful sugar-based surfactants nowadays. Research to develop derivatives on this basis is still ongoing.