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Technology

Grade 5

Processing materials

Module 12

Discovering textile fabrics

Background information

People have worn clothes as protection from the elements (heat and cold) since the earliest times of the Stone Age (12 000 B.C.). Stone Age people used animal pelts and parts of plants to make clothes, which means that they used things that occurred naturally in their environment. Animal pelts were joined together with sinews and needles made from bone to make simple garments. Seeds, feathers and husks were used as simple decorations.

Assignment 1

Here you have a sketch of Shaka, the Zulu king who lived in 1825. Consult a reliable source to get the information you need and describe the traditional garments of a Zulu warrior and the material that was used to make each part of his outfit.

[LO 3.1]

Assignment 2

Would you wear a coat made from the pelt of a jaguar nowadays? Provide reasons for your answer.

[LO 3.2]

Background information

The people of Ancient Egyptian started to weave textiles during the Bronze Age (3 000 B.C.). Textile fabrics can be woven from fibres obtained from animals (silk and wool) or plants (cotton and linen) and are used to make coverings and decorations like clothes, mats, blankets, curtains, etc. The development of technology made it possible to use many other fibres and materials to make textiles, so that we nowadays make textiles from textile fibres found in nature (from plants and animals) or from materials made by people (from wood, oil and coal). We therefore have natural and manmade (synthetic) textile fabrics. The first textile fabrics made of plastics (rayon, polyester, nylon, viscose) were produced in England, round about 1850. The manmade synthetic yarns are manufactured in factories, from oil or coal. Chemicals are extracted from these minerals and are made into plastic fibres.

Assignment 3

Sort each of the following objects into natural or manmade: a plastic bag, a fur coat, a wooden bowl, a glass bottle, a polystyrene container, a wooden table.

NATURAL FABRICS MANMADE FABRICS

[l [lo 3.1]

Background information

The advantages of plastics are:

  • It is cheaper to manufacture.
  • It can be processes into many different forms.
  • It can be dyed easily.
  • It is very durable.
  • It lasts very long.

Disadvantages of plastics:

  • It cannot be recycled readily.

Natural fabrics

Natural fabrics can be of animal, plant or mineral origin. Examples of animals that provide fibres for fabrics are sheep, goats, rabbits, camels, silkworms, llamas and horses. Plant fibres are obtained from the bark, leaves, seeds and fruit of particular plants, like cotton, sisal and flax, and coconut fibre from coconuts.

Wool is obtained from sheep by shearing the sheep annually. A sheep provides about four kilograms of wool per year. There are different breeds of sheep and they provide different types of wool. The wool from merino sheep is regarded as the finest and as the best as far as quality is concerned. Merinos are bred mainly in Australia and South Africa because they do very well where the climate is warm and dry. Australia is one of the top wool producing countries in the world.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Technology grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10979/1.2
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