Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Influence of sunlight exposure on rhizophora dye solution

26.06.2013
This study investigates the effects of sunlight exposure on Rizophora dye solution

Natural dyes have been used as the colouring of natural fibres, in cosmetic products, to produce ink, watercolour and artist’s paints. Natural dyes produce an extraordinary diversity of rich and complex colour.

Besides that, natural dyes are a renewable resource since it is not dependent on petroleum as are many synthetic dyes. The main objective of this research project is to study the effect (dose response) of sunlight exposure on Rhizophora dye solutions by using UV–Vis and FTIR spectrophotometer.

Rhizophora dye is a kind of natural dye which is extracted from Rhizophora Apiculata plant Rhizophora is a genus of tropical mangrove trees. Rhizophora apiculata is widely found along the tropical coastal areas and offshore islands near Peninsula Malaysia. It grows on sandy oil substrate or on along the islands especially in muddy areas. Rhizophora is used primarily as timber, building material, fencing, firewood, medicines as well as dyeing and tannins for staining leather.
The induced colour changes of dyes under the effect of radiation have been sufficiently documented in literature. Most of the reported experimental work was done on aqueous aerated acidic or alkaline organic dye solutions. The decrease in the absorbance of solutions on irradiation was suggested to be used in chemical dosimetry.

The Rhizophora dye solutions were prepared by soaking the Rhizophora bark, flower and leave in distilled water for 7 days. The sunlight exposure is carried out up to 30 days. UV-Visible spectra of the dyes were measured by using UV–Vis spectrophotometer (Palo Alto, CA).
The outcome of the research project was Rhizophora dye solutions could possibly be applied as chemical dosimeters.

There are several experiments recommended for future studies as following:
i. To investigate the dosimetric performance for dye solutions of various natural dye.
ii. To further understand the dosimetric properties of Rhizophora Apiculata dye polymer blends

AZLINA BINTI BAHA
Universiti Teknologi MARA, Malaysia.
azlina@ns.uitm.edu.my

Darmarajah Nadarajah | Research asia research news
Further information:
http://www.uitm.edu.my

More articles from Studies and Analyses:

nachricht Drone vs. truck deliveries: Which create less carbon pollution?
31.05.2017 | University of Washington

nachricht New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

Im Focus: Optoelectronic Inline Measurement – Accurate to the Nanometer

Germany counts high-precision manufacturing processes among its advantages as a location. It’s not just the aerospace and automotive industries that require almost waste-free, high-precision manufacturing to provide an efficient way of testing the shape and orientation tolerances of products. Since current inline measurement technology not yet provides the required accuracy, the Fraunhofer Institute for Laser Technology ILT is collaborating with four renowned industry partners in the INSPIRE project to develop inline sensors with a new accuracy class. Funded by the German Federal Ministry of Education and Research (BMBF), the project is scheduled to run until the end of 2019.

New Manufacturing Technologies for New Products

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

A new technique isolates neuronal activity during memory consolidation

22.06.2017 | Life Sciences

Plant inspiration could lead to flexible electronics

22.06.2017 | Materials Sciences

A rhodium-based catalyst for making organosilicon using less precious metal

22.06.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>