Biocomposites reinforced with natural fibers: 2000–2010

http://academic.oup.com/milmed/article-pdf/146/7/506/24126715/milmed-146-7-506.pdf

Goodman and Gilman's The Pharmacological Basis of Therapeutics

Potential materials for food packaging from nanoclay/natural fibres filled hybrid composites

Natural fibers today are a popular choice for applications in composite manufacturing. Based on the sustainability benefits, biofibers such as plant fibers are replacing synthetic fibers in composites. These fibers are used to manufacture several biocomposites. The chemical composition and properties of each of the fibers changes, which demands the detailed comparison of these fibers. The reinforcement potential of natural fibers and their properties have been described in numerous papers. Today, high performance biocomposites are produced from several years of research. Plant fibers, particularly bast and leaf, find applications in automotive industries. While most of the other fibers are explored in lab scales they have not yet found large-scale commercial applications. It is necessary to also consider other fibers such as ones made from seed (coir) and animals (chicken feather) as they are secondary or made from waste products. Few plant fibers such as bast fibers are often reviewed briefly but other p...

A Review of Natural Fibers Used in Biocomposites: Plant, Animal and Regenerated Cellulose Fibers

In State of Art: Mechanical and tribological behaviour of polymeric composites based on natural fibres

Physico-mechanical properties of chemically treated palm and coir fiber reinforced polypropylene composites

Agro-based renewable materials have received significant attention in recent years because of their low cost, light weight, ecofriendliness, and worldwide environmental awareness. In the present work, coir fiber reinforced polypropylene composites were manufactured using injection molding method. Raw coir was chemically treated with benzene diazonium salt in alkali, acidic, and neutral media separately in order to increase the compatibility between the coir fiber and polypropylene composite. During chemical treatment, hydrophilic -OH groups in the raw coir cellulose were converted to hydrophobic -O–Na groups. Both raw and treated coir at 10, 15, 20, 25, 30, and 35 wt % were utilized during composite manufacturing. Microstructural analysis and mechanical tests were conducted. Alkali treated specimens yielded the best set of mechanical properties. On the basis of fiber loading, 30% fiber reinforced composites had the optimum set of mechanical properties among all composites manufactured.

Chemical Treatment of Coir Fiber Reinforced Polypropylene Composites

This work is aimed at giving emphasis on the present pollution scenario in Bangladesh due to textile effluent and the consequent solution of the problem by installation of effluent treatment plant. Though the medium and small-scale industrial activities have a positive impact on the economy of our country, the increasing industrialization is contributing severe pollution to the environment by the toxic waste discharge. The liquid effluents from industries are causing a major havoc to the environment, ecology, agriculture, aquaculture and public health since the development of textile industries in the country. So, it is time to give a pause to the pollution and phase it out gradually to protect the river system. It had become a prerequisite to set up ETP in each industrial establishment, particularly at dyeing industries that were discharging huge amount of liquid waste to the rivers every day. Since the highest number of factories is of textile category and these types of factories play a major role in polluting the nature, Government’s main focus is on the textile mills and industries related to textile. But, for the successful implementation of ETPs, industry owners will have to be socially responsible and at the same time, government should provide the factory owners with logistic supports and relaxed timeframe to set up ETPs.

/pdf/implementation-of-effluent-treatment-plants-for-waste-water-gt7rzlysc2.pdf

Implementation of Effluent Treatment Plants for Waste Water Treatment

The present study was undertaken to evaluate the analgesic and
anti-inflammatory activities of ethanolic extract of Terminalia chebula (commonly known as Haritaki) fruits in
experimental animal models. The study was carried out using Swiss Albino mice (20-25 g) and Long Evans rats (100-150 g) of either sex.
The analgesic activity of Terminalia
chebula was assessed by using hot plate method. For the determination of
analgesic effect, doses of ethanolic extract of Terminalia chebula used in the present study were 250 mg/kg and 500 mg/kg body weight (BW).
Anti-inflammatory effect was analyzed by carrageenan induced paw edema method
with the administration dose of 300 mg/kg BW of
animals. The analysis of experimental data was performed by statistical process
of ANOVA to determine the variability of sample, while Dunnet’s test was
performed for evaluation of comparative analgesic and anti-inflammatory
activity of Terminalia chebula with
control and standard. The animals were divided into four treatment groups of
six animals each and the “Mean ± SEM” is the statistical identifiable value of
the data and P values mg/kg and 500 mg/kg BW doses throughout the observation period in 30 minutes and 60
minutes after treatment, which was comparable to the standard ketorolac and
control group. In carrageenan induced paw edema method, considerable results were found after determining the percentage change in paw volume in extract.
In both cases of analgesic and anti-inflammatory
study, % inhibition of pain and inflammation were evaluated. Comparing with
control, largest inhibition was found in inhibiting inflammation 5
hours after treatment, while the largest inhibition of pain was obtained in 30 minutes and 60 minutes after treatment of doses. The present study suggests that ethanolic extract
of Terminalia chebula fruits has
significant analgesic and anti-inflammatory activities.

/pdf/evaluation-of-analgesic-and-anti-inflammatory-activities-on-1k4hr0yvjl.pdf

Evaluation of Analgesic and Anti-Inflammatory Activities on Ethanolic Extract of Terminalia chebula Fruits in Experimental Animal Models

Surface modified natural fibres have received great attention due to their several advantages such as non-toxic, low cost and environmentally friendly nature. The development of composite materials, surface modified natural fibre used as reinforcing filler and thermoplastic polymers as matrixes is currently at the centre of attention. In the present work, coir fibre reinforced polypropylene composites were manufactured using a single screw extruder and an injection moulding machine. Raw coir fibre was oxidised, and manufactured composites were post-treated with phenylhydrazine in order to increase the interfacial adhesion between the coir fibre and the polypropylene matrix. Both raw and oxidised were utilised during manufacturing. Coir fibre at 15, 20, 25, 30 and 35 wt-% was utilised. Microstructural analysis (scanning electron microscopy and Fourier transform infrared spectroscopy), mechanical tests (tensile, flexural and impact, hardness) and Water adsorption property were conducted. Post-treate...

Md. Ershad Ali

Papers

Physico-mechanical properties of chemically treated palm and coir fiber reinforced polypropylene composites

Chemical Treatment of Coir Fiber Reinforced Polypropylene Composites

Implementation of Effluent Treatment Plants for Waste Water Treatment

Evaluation of Analgesic and Anti-Inflammatory Activities on Ethanolic Extract of Terminalia chebula Fruits in Experimental Animal Models

Effect of hydrazine post-treatment on natural fibre reinforced polymer composites