反蛋白石结构光子晶体及其应用的研究

反蛋白石结构光子晶体因具有完全光子带隙、制备材料广泛、特殊的周期结构、大的比表面积和连通的孔洞结构,近年来在自发辐射的调制、提高光催化反应速率和染料敏化太阳能电池反应速率等领域成为研究热点之一,并且在光、电、催化、传感、显示、检测等领域有着巨大的应用价值。介绍了反蛋白石结构光子晶体的基本概念及制备方法,阐述了反蛋白石结构在材料自发辐射的调制、能量传递的调制、促进物理化学反应、外界环境响应材料等方面的作用及其应用。     

负离子塑料的制备与研究

综述了负离子添加剂表面改性的方法,详细介绍了负离子塑料的制备工艺:熔融共混法、涂覆法、负载催化聚合,并对负离子塑料的发展做了展望。     

Carbon dioxide sensors for intelligent food packaging applications

Recently, the demand for safe and high quality foods, as well as changes in consumer preferences have led to the development of innovative and novel approaches in food packaging technology. One such development is the smart or intelligent food packaging technology. Intelligent packaging has enabled to monitor and communicate information about food quality. This technology also helps to trace a product’s history through the critical points in the food supply chain. In general, occurrence of elevated CO₂ gas level is the prime indicator of food spoilage in packed foods and also its maintenance at optimal levels is essential to avoid spoilage in foods packed under modified-atmosphere packaging (MAP) conditions. Hence, a CO₂ sensor incorporated into food package can efficiently monitor product quality until it reaches the consumer. Although much progress has been made so far in the development of sensors monitoring CO_2, most of them are not versatile for food packaging applications and suffers from limitations such as high equipment cost, bulkiness, and energy input requirement, including safety concerns. Therefore, the development of efficient CO₂ sensors that can intelligently monitors the gas concentration changes inside a food package and specific to food packaging applications is essential. In the present review, progress on the development of different types of CO₂ sensors such as optical sensors, polymer opal films, polymer hydrogels, etc., which can be readily applicable to food packaging applications, is discussed.     

湿法磷酸联产白石膏的方法

为了解决传统二水法磷酸副产的磷石膏杂质含量杂质高,色泽差、资源化利用率和利用附加值低的问题,开发湿法磷酸生产副产白石膏技术。新技术副产白石膏杂质含量低,可用于生产高档的填料、饰品和石膏建材产品;能提升石膏制品的附加值;有助于石膏制硫酸联产水泥项目产品质量提高、成本下降;用于生产硫酸铵(钾)时,提高碳酸钙的质量和经济效益;产出的湿法磷酸为无色或微浅黄色,杂质含量下降,质量优于二水法工艺的磷酸。     

生产湿法磷酸副产白石膏新技术

针对传统二水法磷酸副产的磷石膏杂质含量高、色泽差、资源化利用率低的问题,发明了湿法磷酸副产白石膏技术,所产的白石膏杂质含量低,可全部资源化利用。以我国目前湿法磷酸年产量计,年可产出白石膏5 000万t,市值达数百亿元,经济与社会效益好。     

RhB-PEGDA/ETPTA光子晶体复合膜对RhB的荧光偏振性能调控

将含有罗丹明B(Rh B)的聚乙二醇二丙烯酸酯（PEGDA）和乙氧基化三羟甲基丙烷三丙烯酸酯（ETPTA）混合物与Si O2光子晶体进行复合,制备了Rh B-PEGDA/ETPTA光子晶体复合膜（简称复合膜）。通过反射光谱、荧光光谱对复合膜的光学性能进行了测试,研究了光子晶体特性对RhB荧光偏振性能的调控。结果表明,Rh B空白膜的荧光偏振态是部分椭圆偏振态;当复合膜的光子带隙（PBG）与其发射峰波长（595nm）匹配时,成功实现了对出射荧光偏振态的调控;当光子晶体层厚度为6.94μm时,荧光偏振调控效果最好,荧光各向异性值（r）为0。当复合膜的PBG与激发波长（555nm）匹配时,r为0.082;与发射峰红带边缘波长（665nm）匹配时,r为0.12;与发射峰波长不相关（730nm）时,r为0.16。由此可见,只有适当PBG的复合膜才会对Rh B的荧光偏振态产生调控作用。     

Inverse Opal Scaffolds with an Embossed Surface Pattern Prepared from Sticky Golf‐Ball‐Shaped Microparticle Assemblies

Inverse opal scaffolds presenting an embossed‐pattern surface are prepared from colloidal crystal assemblies of uniformly sized golf‐ball‐shaped microparticles. Post‐treatments, such as thermal annealing during the bridging of the microparticles for opal preparation, are avoided to prevent deterioration of surface patterns of the sacrificial template. This presents a new approach to increase the surface‐area‐to‐volume ratio (SAV) by the alteration of morphological features in sophisticated 3D structures that remain largely unexamined owing to difficulties in their preparation. Previous results observed in 2D surfaces that show effective performance improvement through an increase in contact area, especially in biomedical applications, also appear applicable to patterned inverse opal scaffolds based on comparable results obtained from cell cultures. As the field of application of opal and inverse opal structures is expanding due to their unique structural advantages, such as 3D interconnectivity and periodic structures, our strategy opens the door for the use of patterned surfaces on highly sophisticated 3D structures, improving their performance via an increase in SAV.     

一种MGPM/Opal固-固相变储能材料的相变及结晶行为

采用含有相变单元的单体缩聚法合成了侧链含有聚乙二醇单甲醚（MPEG）的新型固-固相变储能复合材料（相变共聚物缩写名称为（MGPM）/蛋白石（opal））,通过广角X射线衍射（WAXD）、差热扫描量热仪（DSC）和热台偏光显微镜（POM）、热重（TG）等测试手段对其结晶结构、结晶行为、结晶形态和热稳定性进行了研究,结果表...     

负离子功能纤维与纺织品研究进展

综述了释放负离子功能纤维织物的研究发展,报导了负离子与人们健康、保健的关系,论述了负离子产生的机理、释放负离子纺织品的制备方法、国内外负离子纺织品的开发研究与应用现状、及目前尚存在的问题;指出释放负离子纺织品不仅能改善空气环境,还具有良好的医疗保健功能,是一种随身携带的负离子发生器;开发研制成功了奇才系列释放负离子纺织品,其具有较高的经济价值和重要的现实意义.