The study aims for a comparative study of butyl rubber (IIR) and bromobutyl rubber (BIIR) based on spectroscopic, dielectric and thermal characterization. Using FTIR, complete vibrational analysis of butyl rubber and bromobutyl rubber are made available which confirms their chemical structure and the functional groups present in them. The effect of microwave frequency, namely 10 GHz and 26 GHz ...

In previously reported experiments, the car cinogenic potency for mice of extracts of processed rubber was traced to the presence of 3,4-benz pyrene and related compounds (13). A search for the origin of these hydrocarbons was next under taken. Samples of crude rubber, both natural and synthetic, did not contain any of these hydrocar bons when they were sought by extraction, chro matography, an...

BACKGROUND In an attempt to decrease injuries, newer forms of artificial turf have been marketed. The purpose of this study was to determine whether a new shredded rubber-based turf improves impact attenuation. METHODS An instrumented computerized impact recording device (IRD, Techmark, Lansing, MI) was dropped 20 times from a height of 48 inches onto five types of turf used by a professional...

Pressure conductive rubber has become a subject of interest in the field of slip or pressure sensor development because of it’s high sensitivity, flexibility and light weightiness. It is also been used where soft and flexible solder less connector is required. But this flexibility also creates some difficulties for making contacts with electrodes. Generally conducting glue or lamination or elec...

The dimensioning of injection heads for the extrusion of rubber profiles is exclusively based on empiric knowledge of the non-linear flow behavior of elastomers. Thus, the design of injection heads is carried out with subject to the used rubber compound, whereas the geometry of the appropriate profile is achieved by empiric adaptation of the extrusion die. This was one of the motivations for a ...

Objective: Xenomelia, that is, the nonacceptance of one’s own limb, is an intriguing but little understood condition. We sought to further test the most prominent neuroscientific hypothesis that suggests xenomelia results from a breakdown in multisensory integration for the affected body part. Method: A ”rubber foot illusion” paradigm was developed and tested in healthy participants and in indi...

Bacteria able to grow on purified natural rubber in the absence of other organic carbon sources were isolated from soil. Ten isolates reduced the weight of vulcanized rubber from latex gloves by >10% in 6 weeks. Scanning electron microscopy clearly revealed the ability of the microorganisms to colonize, penetrate, and dramatically alter the physical structure of the rubber. The rubber-metaboliz...

One hundred and thirty seven previously untreated out-patients with first and second degree haemorrhoids were allocated at random to treatment by infrared coagulation (n=66) or rubber band ligation (n=71). Complete follow up was obtained in 122 patients (60 who had undergone infrared coagulation (group 1), and 62 rubber band ligation (group 2)) at periods from three months to one year after com...

A natural rubber degrading candidate was isolated from a soil sample from Aswan, Egypt. The strain was able to grow on natural rubber as a sole source for carbon and energy. According to its degradation behavior, it grew adhesively and in direct contact with the rubber substrate and led to disintegration of the material during cultivation. Furthermore, this strain was not able to form a clear z...

Hevea brasiliensis, or rubber tree, is an important crop species that accounts for the majority of natural latex production. The rubber tree nuclear genome consists of 18 chromosomes and is roughly 2.15 Gb. The current rubber tree reference genome assembly consists of 1,150,326 scaffolds ranging from 200 to 531,465 bp and totalling 1.1 Gb. Only 143 scaffolds, totalling 7.6 Mb, have been placed ...