Solid particle erosive wear behaviour of Eulaliopsis binata fiber reinforced epoxy composite

In the present work, Eulaliopsis binata, a natural fiber collected from the eastern part of India is taken as a reinforcement with epoxy resin to develop a new class of polymer composite material, which has been unexplored till date for tribological applications in the composite industry. Different characterization studies of the fiber such as SEM, EDS, XRD are carried out to astern its potential to be used as a fiber in composite. Short Eulaliopsis binata fiber of different weight percent (10, 20, 30, and 40) is incorporated in neat epoxy and polymer composites are fabricated using the hand lay-up method. Solid particle erosion behavior of the fabricated composites is studied with four different impact velocities (48, 72, 82, 116 m/s) and impinging angles (30°, 45°, 60°, 90°). Improved erosion wear resistance is exhibited by the composites after the addition of Eulaliopsis binata fiber to neat epoxy. In addition, the inclusion of fiber altered the erosion behavior of neat epoxy from brittle to semi ductile nature. The impact velocity of the erodent particles also shows significant effect on the erosion behavior of the developed composites. The eroded surfaces of the worn samples are analyzed with SEM to ascertain the failure mechanism of the developed composites.

Determination of crystallinity of Chinese handmade papers by means of X-ray diffraction

The crystallinity indices (CrI) of Chinese handmade papers were investigated using the X-ray diffraction (XRD) method. Four Chinese handmade papers, Yingchun, Zhuma, Yuanshu and Longxucao papers were used as model substrates of mulberry bark, ramie, bamboo and Eulaliopsis binata papers, respectively. Two forms of the paper samples, paper sheets and their comminuted powders, were used in this study. The results showed that their XRD patterns belong to the cellulose-I type and Iβ dominates the cellulose microstructure of these paper samples. Moreover, it was found that the microstructures and CrIs of cellulose of these papers were changed by the grinding treatment. This work suggested that the sheet form of the handmade papers is suitable to determine CrI by XRD, despite the contribution of non-cellulosic components in the papers. The order of CrIs for these paper sheet samples was Yingchun, Zhuma, Longxucao and Yuanshu papers. Besides CrIs, differences in cross-sectional areas of the crystalline zone of cellulose can be used for comparing different types of handmade papers. It was also found that the CrIs and crystallite size of paper cellulose varied between the sheet samples and the powder samples, illustrating that the pulverisation has a negative influence on the microstructure of the handmade papers.

Additions to the Grasses (Poaceae) of Telangana from Kinnerasani Wildlife Sanctuary, India

Eulaliopsis binata (Retz.) C. E. Hubb. and Pogonatherum crinitum (Thunb.) Kunth are reported for the first time from Telangana state. Detailed description, photo plates, and relevant notes are provided to facilitate identification.

Pharmacognostic and pharmacological evaluation ofEulaliopsis binataplant extracts by measuringin vitro/in vivosafety profile and anti-microbial potential

Present investigation emphasizes the pharmacognostic and phytochemical screening ofEulaliopsis binataextracts as well as their toxicological profile and anti-bacterial potential.