Now I'm working on paper pulp, i'm creating a sample of the pulp.
The paper in the ratio of 1: 7 in water.
the ammonium bicarbonate was added to make the Porosity of my sample more large and i add an Adhesives( the Wallpaper paste) to my Sample to have more strength.
the next step is that i leaved the sample to dry in the oven
Asked if you have the alternative of the two (the Wallpaper paste, ammonium bicarbonate), which may be a better effect
The second question is what the correct ratio of ammonium bicarbonate: pulp
Thank you
i guess you'll have to find it by your own..by multiple trials...
Please carry out tests with different ratio of these materials, and find out the result. If you see paper industry, very popular filler is calcium carbonate, for example, and strength agent is various types of starch, polyacrylamide, etc., for example.
I agree with the answer...but this ratios should be selected taking into account the the type of recovered paper you are pulping and also water...drying temperature and time are also factors to be taken into account....
Thank you Adrian Catalin Puitel, Hidehiko Yamazaki
i will try your Method and i will add polyacrylamide in next Experiement
I add a comment now. In order to make porosity of paper, one idea is to use a kind of surfactant or substance which reduces occurrence of hydrogen bonding between fiber celluloses. This probably gives bulk ( and also porosity). But, you should remember that reducing hidrogen bonds directly bring about the decrease in sheet strength. So, you should find out the optimum point as the result of your experiment, anyway. And, you mentioned "compressive strength" in your question tytle. In this case, another important factors are fiber length and fiber strength as well as interfiber bonding strength. So, you can enjoy a lot of research works to achieve your target.
first of all ,i would like to thank you for the value information that i received from you,and for sure i will apply theme in my experiments. and i want to ask you ,if you have any Paper about that (Relation between Hydrogen and strength by Pulp) ,i will be thankful.
Historically many researchers published papers about interfiber bonding. One good example is book series (19 books), named "Papermaking Science and Technology, publised by Finnish Paper Engineers' Association and TAPPI (1999)". I think that you can refer famous classical book, "Fundamental of beating process, by Emerton" if possible. If you use polyacrylamide, amide group can make hydrogen bond with hydroxy group of cellulose. And, of course, you should remind that these goups strongly interact with water molecules by hydrogen bonding. Please consider how possible interactions occur between atoms (H, O, N). Incidentally, if you want to know my past research about "Evaluation of Strength Properties of Handsheets by Fundamental Sheet and Fiber Properties", you can get my paper from ResearchGate.
thank again for those information that you provided to me. Your advice is always so valuable to me. I appreciate your continued interest in and your help .
Please see an attached file explainig fiber structure and how a cellulose hydroxyl group of fiber interacts with neibourhood cellulose hydroxyl group due to hydrogen bonding (H-O). And, also see the importance of cellulose water interaction based on hydrogen bonding. You can consider every situation in our surroundings, including water penetration, moisture change, etc.,
I want to tell you how grateful I am for your help and advices , and sorry for being late to respond you because i had exams
There is no correct ratio it all depends on what your final outcome you are looking for. It will be a good idea to start with a small percentage of ammonium bicarbonate and test your sample and keep increasing till you get the maximum/desired compression strength. also it will be good to go with higher Paper : Water ratio for good consistency.
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