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 Amputees can learn to control a robotic arm with their minds
28.11.2017 | University of Chicago Medical Center

nachricht The importance of biodiversity in forests could increase due to climate change
17.11.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

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: First-of-its-kind chemical oscillator offers new level of molecular control

DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.

Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

Engineers program tiny robots to move, think like insects

15.12.2017 | Power and Electrical Engineering

One in 5 materials chemistry papers may be wrong, study suggests

15.12.2017 | Materials Sciences

New antbird species discovered in Peru by LSU ornithologists

15.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>