Project-Learning

Under which situation do we use which brand of plaster?? 

Member list

Teacher Adviser : Tam Wing Ching Leader : Chong Maan Yu (4) Member :

Chang Lok Yu (2)Chow Suk Shan (5)Ho Chung Yan (7)Hui Po Yan (8)Leung Chui Shan (11)

Introduction:

Usage of plasters : related to our daily life.

allow the wound to breathe and help the natural healing process.

Factors to be considered when doing the experiments

Absorbency VentilationForce degreeWaterproofViscosity

~Waterproof Experiment~

Aim

test the cotton if it

could prevent the

incoming water.

1.Formed the two groups

~Waterproof Experiment~

Put on tomato, then filled up with water.

Results:

1 Standard ﹕ (obtained the least water ) 4: Watsons

2 Adhesive Plasters 5 Handsaplast ﹕ ﹕3﹕Banitore 6 Band Plus ﹕ (obtain the most water )

~Waterproof Experiment~

~~Viscosity Experiment~~

Aim

test which plaster

could absorb the

largest amount of

dust

~~Viscosity Experiment~~

put the plasters on some wooden stickers and placed them near the

windows.

Viscosity Experiment( failed )

First experiment:

our classroom

was so clean, we

couldn't found a

lot of dust

Second experiment:

there was too a

lot of dust, we

couldn't find

different between

the plasters

Absorbency Experiment

Aim: test the cotton’s

absorbency.

Why? one of the important

features Gentian violet

solution is easy to show the results clearly.

Steps: drop drib of gentian

violet solution to the each plasters’ absorbent cotton.

Wait for 2 minutes put one paper cover

the plasters and one paper at the bottom to absorb the extra solution.

~Absorbency Experiment~

plaster Cover paper

contains solution

cannot absorb the solution completely

Absorbency Experiment

cover paper (at the bottom)

Plaster

has solution

can absorb all of the solution but it overloads.

~Absorbency Experiment~

Results: 1: Adhesive Plasters. 2: Banitore

Protective Plaster 3: Hansaplast 4: Standard Bandage 5: Watsons Plasters 6: Band Plus

Pull Experiment

used spring scale instead of by hand

(more accurate and easier to measure.)

Affording weight higher

---tensility is better

put a clip at one side of each plaster

Pull Experiment

the other side was connected to a spring scale

pulled the plaster violently

*=The easiest to pull.******=The stickiest.#= the worst (the most change in appearance.)######=The best.(Just small change in appearance)

Pull Experiment (Results)

Pull experiment (failed)

Use different afford power (Newton)-------unfair (a big mistake)

~Pull Experiment2~(Forced Degree)

set the weight,

25N

pull the plasters

with this weight

~Pull Experiment2~(results)

~Pull Experiment2~results

Plasters

1.Standard ####

2.Watsons ##

3.Hansaplaste ######

4.Band Plus #

5.Adhesive ###

6.Banitore #####

#= the worst

(the most change in appearance.)

######= the best (just small change in appearance) Hansaplast maintains the first position in both experiments

Ventilation Experiment

Aim: test the plasters’

ventilation

Why? it will affect the

wound to breathe or the healing.

 

Ventilation Experiment

Steps: 1. drop 2ml alcohol

into each test tube 2. cover the test

tubes with the different plasters’ cotton.

3. put all the test tubes near window

*alcohol’s volatility is better than the others

Ventilation Experiment(failed)

not enough time dangerous (by

heating ) didn't have other

methods. *Failed the 2nd time--due to atypical

pneumonia (use water to do the

second experiment)

~Conclusion~

If the number is small, it has the best performance in this category.

--- failed two experiments (viscosity and ventilation).

Order:

Name   

Waterproof

Absorbency

Pull Average 

Place in a competition

Band Plus 1 6 6 4.3… 4(WORST)

Handsaplast

2 3 1 2 1 (BEST)

Watsons 3 5 5 4.3 4(WORST)

Banitore 4 2 2 2.6… 2Adhesive Plasters

5 1 4 3.3… 3Standard 6 4 3 4.3… 4 (WORST)

~Conclusion~

Arrangement

1: Handsaplast

2: Banitore

3: Adhesive Plaster

4: Standard

: Watsons

: Band Plus

Mistakes:failed three experiments -no enough time --environmental errors ---our mistakes (couldn’t concentrate the problems to solve) We are so sorry that we

could

not give you the exact answers!!

~Conclusion~

Advice: Standard & Adhesive

Plasters for fingers(contacted with

water---good at waterproof )

Adhesive Plasters for wound is quite large and outpour blood

(absorb blood rapidly.) We hope these advise will be useful for you!!

~Reference~

~E-mail address~

ktgss_3d02@yahoo.com.hk