What should I do if the leaf vein bookmark fails and the leaf vein bookmark is dry

The alkaline noodles are sodium carbonate, and the aqueous solution is strongly alkaline (pH =, although there is a certain corrosiveness, but it must not be strong enough to corrode the mesophyll, otherwise the mother's steamed buns and noodles can still be ......

If you want to make a leaf vein bookmark, you need to use sodium hydroxide and hydrogen peroxide, sodium hydroxide is also called caustic soda and caustic soda, and the corrosiveness is super strong. Hydrogen peroxide is a hydrogen peroxide solution, which is divided into three types: medical, military and industrial, and pharmacies sell 3% medical grade, and it is recommended to buy industrial use from the Internet together with caustic soda. If it's a student, I recommend asking the chemistry teacher, haha.

The specific method is to post my previous post to you:

Tools & Materials.

Beakers, tripods, asbestos nets, alcohol lamps, matches, scales, old toothbrushes, tweezers, watercolor paints, colored silk threads, sodium hydroxide, 3% hydrogen peroxide, well-proportioned leaf veins.

The production process. 1.Pour about 100ml of water into a beaker, add 4 grams of sodium hydroxide to the water, place the beaker on an asbestos net, heat with an alcohol lamp, and boil the solution.

2.Soak the leaves in the solution, continue to heat for about 15 minutes, and gently stir with tweezers to separate the mesophyll and corrode evenly.

3.When the leaves change color and the mesophyll is crispy, remove the leaves with tweezers and place them in a glass with clean water.

4.Remove the leaves from clean water, place them on the glass, and gently brush the front and back of the leaves with an old toothbrush in running water, brushing off the soft parts of the leaves to reveal the white veins. Put the leaf veins into 3% hydrogen peroxide for 24 hours to make them pure white, then remove the leaves, wash them with clean water, and drain off the water droplets.

5.Place the leaves in an old book or newspaper and press them to dry.

6.Take out the flattened leaf veins, let them dry thoroughly, apply watercolor paint on both sides with a brush, and then flatten them after a little drying.

7.Take out the leaf vein piece of the best color, tie a colored silk thread on its petiole to get a delicate and beautiful leaf vein bookmark.

In addition to chemical materials, many tools can be replaced with items in life, such as alcohol lamps and matches can be used with gas stoves, beakers can be used with unused enamel pots and iron pots, and so on, which can save costs.

Full of sincerity, remember oh o( o

Failed attempt to make leaf vein bookmarks at home (how flat about failure for students of basic subjects?) ）

You're referring to the leaf vein bookmark accidentally sticking in the process of drying, right? If so, spray some water on the leaves so that they can be removed when they are wet, then place them on a face towel and cover them with several layers of tissue to allow the paper towel to absorb the water from the veins.

After drying, the leaf vein bookmark looks very delicate, and you can learn how to make it.

Material preparation: 1. The leaves of osmanthus, privet, magnolia and other plants with clear veins and relatively tough leaf veins;

2. 3 grams of sodium carbonate, 4 grams of sodium hydroxide, water;

3. Alcohol, tweezers, toothbrushes, glass pieces, water travel color paints, colored ribbons, beakers, etc.

Method: Fill a beaker with 100ml of water and add 3 grams of sodium carbonate and 4 grams of sodium hydroxide.

1. Put it on the alcohol lamp and heat it, and gently stir it with a glass rod to dissolve it (the liquid medicine is corrosive and cannot be touched by hand).

2. When the liquid medicine is boiling, soak the collected leaves in the liquid medicine, continue to heat and constantly turn the leaves with tweezers.

3. After about 10 minutes, take out the leaves and put them in clean water, and gently brush off the mesophyll with an old toothbrush on the glass sheet until the leaf veins are completely exposed, and there is no mesophyll on the leaves.

4. While the veins of the leaves are not dry, apply your favorite color and flatten to dry.

5. Finally, tie a colored ribbon on the petiole, and the exquisite colored leaf veins are made.

Leaf vein bookmarks can use osmanthus leaves, heather leaves, papaya leaves, tea tree leaves, magnolia leaves, etc., and the leaves of evergreen woody plants are appropriate. The leaf vein bookmark is to remove all the epidermis and mesophyll tissue of the leaf, leaving only the bookmark made of the leaf vein, and you need to choose a leaf with a flexible texture, and you need to be careful when washing and brushing, so as not to damage the leaf vein.

How to make a leaf vein bookmarkThe time to make the leaf vein bookmark is the late summer or autumn when the leaves are fully mature and begin to age, select suitable leaves, put them in 10% sodium hydroxide solution to cook the leaves, gently turn them with a glass rod or tweezers to prevent the leaves from being stacked, so that they are evenly heated, pay attention to the use of sodium hydroxide should be unbridled and pay attention to safety, do not hold it by hand.

Wash the boiled leaves with clean water, spread the leaves on a piece of glass, use a small test tube brush or an old toothbrush with soft hair to gently brush off the rotten mesophyll on both sides of the leaf veins, and then soak the leaf veins in hydrogen peroxide for 24 hours to bleach, and finally dry them.

Use chemical methods to make a leaf vein bookmark.

1.Leaf. Generally evergreen woody plants are preferred.

Such as osmanthus leaves, heather leaves, papaya leaves, eucalyptus leaves, tea tree leaves, magnolia leaves, etc. 2.Sodium hydroxide.

3.Anhydrous sodium carbonate. 4.

Beaker. 5.Iron frame.

6.Alcohol burner. 7.

An old toothbrush with soft hair. 8.Glass plate (pad when brushing leaf veins).

The leaves selected for bookmarking should meet two major requirements: 1. The leaf veins are reticulated veins. Transverse veins such as ginkgo leaves and needle-shaped leaves such as pine needles are not advisable.

2. The leaf veins are clear and complete, so as to ensure that the leaf veins will not be corroded together with the mesophyll, and also reduce the incidence of the leaf veins being broken when removing the mesophyll.