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  1. Strength: Try to tear the cloth and make a note of whether it is easy to tear or not.
  2. Flammability : For this you will have to remember that working with fire is dangerous, because you may get burnt. You should keep a first aid kit at hand and work under supervision of your educator. You will need a pair of tongs, a candle, matches and a sheet of metal.

Set a corner of each piece of cloth alight and take note of the following:

Does it burn or smoulder? Does it burn quickly or slowly? Does it burn to ashes (a soft dust) or does it melt and form a hard pellet? Smell and feel the fabric after it has been burnt and cooled down. Does it smell like burnt paper or is there an acrid smell like chemicals?

  1. Absorbency: You will need water, a measuring jug, a bowl and a stopwatch. Lay the cloth in the bowl. Pour 50 ml of water on the cloth and check how long it takes for the cloth to get soaked. Does it happen fairly quickly or fairly slowly?
  2. Colour: Write down what the colour of the cloth is.
  3. Durability: For this you will need a brick. Rub each of the pieces of cloth back and forth against the brick. Count how many times you have to do this before the cloth is weak enough to be torn / worn through.
  4. Appearance: Describe the textile fabric. Is it coloured in plain colours, dark, light, or pastel colours, or patterned with stripes, checks, floral emblems, etc.?
  5. Texture: Feel it. Is it smooth, elastic, woolly, coarse, rough, corded, crunched?
  6. Feel: Is it soft and flexible or stiff?
  7. Warmth: Does it feel warm or cool?

Copy the following table, and complete:

Textile fabrics

1Nylon 2Polyester 3Cotton 4Silk 5Wool
  1. Strength
  1. Flammability
  1. Absorbency
  1. Colour
  1. Durability
  1. Appearance
  1. Texture
  1. Feel
  1. Warmth
  1. Natural (N) or
Synthetic (S)

[lo 1.3]

Assignment 6 B

  1. Are you able to identify three qualities of textile fabrics made from natural fibres?
  2. Are you able to identify three qualities of textile fabrics made from synthetic fibres?
  1. Complete by writing down the correct answer:

Textile fabrics made from wool are warm and are more suitable for (summer / winter) clothes because they retain heat, while textiles made from cotton and linen are more suitable for (summer / winter).

When heat flows through some solid material from where the temperature is high to where the temperature is lower, we speak of conduction . When we use a material that is a poor conductor to keep heat in or out, such a material is called an insulator . A cool bag or tea cosy is made from fibres that are poor insulators. Fibres like wool, leather, fur and feathers keep warm air in and they therefore are good insulators. Natural fibres like wool are therefore preferred for (summer / winter) clothing.

Synthetic fabrics (let water through easily / do not let water through easily) and keep heat (in / out).

[LO 1.3]

Assignment 6 C (enrichment)

Design an experiment for determining the crease resistance / colour fastness / elasticity of different textile fabrics.

  • Aim:
  • Method and requirements.
1Nylon 2Polyester 3Cotton 4Silk 5Wool
3 Observation ………………………………………………………
4 Conclusion (S of N) …………………

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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