woohoo ppl. this is totally meant for my group members in d SRP thingy. so all rights reserved for me. :P (however it is supposed to be written. u get my idea. :))

SRP project scope:
our project is focused on clothes. we can choose from these few options:
1. why clothes shrink in warm water
2.why clothes fade in warm water or in the sun (we can see which one works better)
3.what dyes are able to bond better with certain fabrics and vice versa
4.what components in bleach cause certain materials or dyes to corrode faster than when washed or soaked in water

here are some information i found from the internet.

This is for 1. :

It is the heat & the agitation. wool shrinks due to the agitation in the washer and the dryer. the wool gets 'felted' and becomes denser. cotton is also affected by the agitation because the thread that cloth is woven or knitted from has been stretched. bouncing around in the washer or dryer will cause fibers to contract, especially cheaper fabrics which were stretched more.

cotton, canvas, denim & linen have a very tight weave, and when they become wet & heat dried, cotton fibers tend to tighten up and shrink. certain 100% artificial materials like acrylic, lycra, neoprene and spandex are pretty weak in their structure and will simply degrade or melt when dried at too high a temperature. hemp, polyster, rayon, nylon and vinyl are much more durable and will not shrink.

the use of cotton in t-shirts means that they will shrink slightly if there is a high percentage of cotton in the shirt. cotton shrinks when it is exposed to heat for any length of time. by washing the clothes in warm or hot water, t-shirts and other items are exposed to hot water for a prolonged period of time. Also, drying clothes can be another source of heat exposure. the heat from the dryer causes a great deal of cotton shrinkage. this happens because the heat of a dryer is intense and prolonged. a complete dryer cycle may take an hour or longer, exposing the t-shirt and other items to a very long period of heat. line drying on a hot day may also cause cotton to shrink. the heat from the sun will act on the water in the shirt, heating it up and causing the natural shrinking of cotton.

now. for 4. i was too lazy to read the information in detail so i'm gonna give you the link. :X

http://books.google.com.sg/books?id=ymtDOXqm15IC&pg=PA181&lpg=PA181&dg=components+in+bleach+that+damages+fabrics&source=bl&ots=8JzVOcm5Bb&sig=T7WTSsrdYqAHEOileBbL47eVzGk&hl=en&ei=mHj3SrSyMouI6wOaytwa&sa=X&oi=book_result&ct=result&resnum=8&ved=0CCYQ6AEwBw#v=onepage&q=&f=false

im so sorry. suddenly laziness overpowered me n i decided jus to giv u d links. ps. :P