Featured Research

from universities, journals, and other organizations

Malaysian researchers create new durable wood-plastic composite material

Date:
October 9, 2012
Source:
Universiti Teknologi MARA (UiTM)
Summary:
Researchers from the Universiti Teknologi MARA in Malaysia have created a new durable wood-plastic composite (WPC). Recent discoveries in the production of new materials have enabled researchers to develop new types of composite materials that perform better and are more durable.

Kenaf (Hibiscus cannabinus), is a plant in the Malvaceae family. Kenaf is cultivated for its fibre in India, Bangladesh, United States of America, Indonesia, Malaysia, South Africa, Viet Nam, Thailand, parts of Africa, and to a small extent in southeast Europe.
Credit: Image courtesy of Universiti Teknologi MARA (UiTM)

Researchers from the Universiti Teknologi MARA in Malaysia have created a new durable wood-plastic composite (WPC). Recent discoveries in the production of new materials have enabled researchers to develop new types of composite materials that perform better and are more durable.

Related Articles


Wood-plastic composites (WPCs) are one of the fastest growing construction components in the wood composites industry. Their popularity is due to low maintenance, high durability, and resistance to termites and other insect attacks. However their widespread usage has been limited due to their high cost in production and in some instances low strength.

The present study focused on assessing the suitability of kenaf core fraction (about 65%of the whole stem of the plant) in powder form as filler material. Kenaf powder, processed from its core fibre, has been shown to offer one potential solution to the increasing scarcity of traditional filler materials. Kenaf stems contain two distinct fibre types, bast and core. Dosing with maleic-anhydride-modified polypropylene (MAPP) in the right amount displayed not only to bridge the interface between the ground kenaf core (GKC) and plastic in the present WPCs, improving stress transfer and increasing their strength and stiffness, but also allow a higher filler loading. Reducing the amount of plastic and increasing the amount of GKC, without sacrificing strength, stiffness or durability, would result in greener WPC products.

Researchers examined the possibility of replacing sawdust with GKC and measured the mechanical properties of the resulting composites. They also looked at the effect of increasing maleic-anhydride-modified polypropylene (MAPP) dosage. Material preparation included GKC drying followed by high intensity blending with polypropylene (PP), coupling agents (MAPP) pellets, and feeding this into a counter-rotating twin-screw extruder for compounding. Compounded blends were then fed to an injection-moulding machine to produce boards of dimensions 153mm x 153mm x 3mm. Specimens were cut from the boards for tensile and bending tests in five replicates. GKC formulation gave the highest average tensile strength, modulus of rupture and modulus of elasticity.

WPCs of polypropylene (PP) and ground kenaf core (GKC) fibre, dosed with maleic-anhydride-modified polypropylene (MAPP) in the right amount, was found not only to bridge the interface between the GKC and plastic, improving stress transfer and increasing their strength and stiffness, but also allow a higher filler loading of 65%. Reducing the amount of plastic and increasing the amount of GKC, without sacrificing strength, stiffness or durability, would result in greener WPC products. The researchers recommend that additional testing and extended research is necessary to investigate the strength of WPC on mechanical properties of modulus of elasticity (MOE) and modulus of rupture (MOR) by carrying out impact test and compressive test which could reveal new discoveries about high filler loading WPCs.


Story Source:

The above story is based on materials provided by Universiti Teknologi MARA (UiTM). Note: Materials may be edited for content and length.


Cite This Page:

Universiti Teknologi MARA (UiTM). "Malaysian researchers create new durable wood-plastic composite material." ScienceDaily. ScienceDaily, 9 October 2012. <www.sciencedaily.com/releases/2012/10/121009111057.htm>.
Universiti Teknologi MARA (UiTM). (2012, October 9). Malaysian researchers create new durable wood-plastic composite material. ScienceDaily. Retrieved April 18, 2015 from www.sciencedaily.com/releases/2012/10/121009111057.htm
Universiti Teknologi MARA (UiTM). "Malaysian researchers create new durable wood-plastic composite material." ScienceDaily. www.sciencedaily.com/releases/2012/10/121009111057.htm (accessed April 18, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, April 18, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

At Least 15 Injured in a California Natural Gas Pipeline Explosion

At Least 15 Injured in a California Natural Gas Pipeline Explosion

Reuters - US Online Video (Apr. 18, 2015) At least 15 injred after natural gas transmission line ruptures in Fresno, California. Julie Noce reports. Video provided by Reuters
Powered by NewsLook.com
NASA Electric Rover Goes for a Spin

NASA Electric Rover Goes for a Spin

Reuters - Innovations Video Online (Apr. 17, 2015) NASA&apos;s prototype electric buggy could influence future space rovers and conventional cars. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Scientists Create Self-Powering Camera

Scientists Create Self-Powering Camera

Reuters - Innovations Video Online (Apr. 17, 2015) American scientists build a self-powering camera that captures images without using an external power source, allowing it to operate indefinitely in a well-lit environment. Elly Park reports. Video provided by Reuters
Powered by NewsLook.com
The State Of Virtual Reality

The State Of Virtual Reality

Newsy (Apr. 17, 2015) Virtual Reality is still a young industry. What’s on offer and what should we expect from our immersive new future? Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins