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 Ventilation Force degree Waterproof Viscosity
~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~ plasterCover 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 2 nd 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 AbsorbencyPullAverage Place in a competition Band Plus … 4(WORST) Handsaplast (BEST) Watsons (WORST) Banitore … 2 Adhesive Plasters … 3 Standard … 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!!
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