Hi, in the video I talk about extrusion (with a syringe) but it is a solution of NMNO, water and cellulose. However, the cellulose extruded with this method is not thermoplastic. There are thermoplastic cellulose derivatives such as cellulose acetate. I am not aware of any elastic cellulosic derivatives.
How would one recover the NMMO from the solution it is solidified in back to a higher concentration? Does nearly all of it stay if it is concentrated through evaporation of the water?
Hello! I am currently working on my thesis statement, and i want to conduct a series of experiments with zero waste. So i am using olive seed/stone as a sample i dried them and crushed them into dust. And by using this sample i want to produce nano-fibres. However, i cannot fully dissolve the lignocellulosic material in the olive seed/stone. Lignocellulosic material contains lignin, cellulose and hemicellulose. Since i am conducting a zero waste experiments i do not want to have any residues. I am really clueless at this point. Could you give me some ideas please? Using cellulase enzyme would help me?
Hi Haz, One experiment you could try is to use the viscose chemistry. To dissolve cellulose it is used a treatment based on sodium hydroxide and carbon disulfide. Since your material contains also lignin, sodium hydroxide it is expected to dissolve lignin (dissolution + hydrolysis). The material once dissolved could be regenerated using an acid bath. Best regards, Alessandro
Sodium hydroxide and carbon dioxide sulfide and some chemicals are added in the process of separating the fluff from the bamboo. If you told me in detail about these it would be very useful for me and please tell me what the pH level of these chemicals should be. I would be very glad if you would tell me this Thank you
Dear Mohan, probably you are referring to the classic method used to produce viscose (bamboo viscose). Unfortunately I haven't tried to do this yet so I can't help you. Best regards
@@vinaymalwiya218 Hi, can you answer the question why old clothes / fabric (made from cotton or other cellulose fibers) are not used as raw material for recycling into new viscose fibers?
@@GerManBearPig You are right sir, that old fabrics were not used as a subinstitute of raw material for Viscose fiber, may be because normally fabric is not made of pure viscose rayon, normally is it is mix of cotton, viscose , and or acrylic. Just for your information sir, now a days pure cotton fabric trials are going on in this regards and I am sure this will be successful. I am also involved in one of such trials. Thanks
The procedure is very simple (in lab): essentially consists in concentrating a 50% NMNO commercial solution up to 80% (at 100°C). Then, the cellullosic material is added and stirred untlil it is dissolved. A lot depends on the cellulosic material used that should be as much pure as possible. Heavy metals depomposes NMNO, calcium and magnesium salts, if present, precipitates in the viscous phase. Nature of cellullose is also important: from my knowledge some sources, such as eucalyptus works better than others. Last but not least, it is better to use antioxidants to limit NMNO decomposition. One of them is pyrogallol. Regards the industrial reaction and some more usefull details, in US 2016214302A1 you can find a lot of usefull informations. Best regards.
Hi Necip, In the video I tried to use equipment as much simple as possible but in each case the solution will be very viscous. In the comercial process temperature is keep high and high pressure extrusors are used to obtain the fiber filaments. Moreover, to optimize the process, cellulose of high purity (in particular no metals, both heavy ones that destroys NMNO but also calcium that makes insoluble precipitates into the viscous solution) is mandatory. In summary, the Lyocell process is apparently very simple but in reality it is not. However, Lyocell if compared with methods like xanthate or cuprammonium is much more enviromentally benign. However, this is my opinion.
@@sasarello8124Hi, If you'd seen my mix, you'd know how little viscous yours is. If you give your e-mail address, I will send you the details of the video by e-mail. You will be surprised.
Thanks for this wonderful video
Can I drink this? I got a cellulose poece of transparent paper in my throat for a month now.
Drinking boiling solvent of any kind doesn't sound like a good idea .... maybe you should go see a doctor instead
Lmao
Thank you for this useful experiment! What do you mean about some reaction with cellulose in this solution to make it thermoplastic or elastic?
Hi, in the video I talk about extrusion (with a syringe) but it is a solution of NMNO, water and cellulose. However, the cellulose extruded with this method is not thermoplastic. There are thermoplastic cellulose derivatives such as cellulose acetate. I am not aware of any elastic cellulosic derivatives.
Obtained material is flexible?
@@sasarello8124obtained in the end video material is flexible and air proof?
@@ГориславЭль-Норман Yes, it is flexible
How would one recover the NMMO from the solution it is solidified in back to a higher concentration? Does nearly all of it stay if it is concentrated through evaporation of the water?
Hello! I am currently working on my thesis statement, and i want to conduct a series of experiments with zero waste. So i am using olive seed/stone as a sample i dried them and crushed them into dust. And by using this sample i want to produce nano-fibres. However, i cannot fully dissolve the lignocellulosic material in the olive seed/stone. Lignocellulosic material contains lignin, cellulose and hemicellulose. Since i am conducting a zero waste experiments i do not want to have any residues. I am really clueless at this point. Could you give me some ideas please? Using cellulase enzyme would help me?
Hi Haz,
One experiment you could try is to use the viscose chemistry. To dissolve cellulose it is used a treatment based on sodium hydroxide and carbon disulfide.
Since your material contains also lignin, sodium hydroxide it is expected to dissolve lignin (dissolution + hydrolysis).
The material once dissolved could be regenerated using an acid bath.
Best regards,
Alessandro
@@sasarello8124 Thank you!
Hello! For example to use lignine - is turning it to lignosulphonate and add to concrete. Lignosulphonate increase hardness of concrete
I'm currently using schweitzer reagent to dissolve cellulose...But how to actually make a plastic out of this cellulose....
Hello manickam.. Could you please share your contact details ?
Will this dissolve fibroin?
May be, probably yes but also it will denature the protein. I tried with keratin and the solvent destroy the sulfur double bonds
if you would leave the titles for more than 1/4 of a second it could be read thanks nice video
Sodium hydroxide and carbon dioxide sulfide and some chemicals are added in the process of separating the fluff from the bamboo. If you told me in detail about these it would be very useful for me and please tell me what the pH level of these chemicals should be. I would be very glad if you would tell me this Thank you
Dear Mohan, probably you are referring to the classic method used to produce viscose (bamboo viscose). Unfortunately I haven't tried to do this yet so I can't help you. Best regards
Pl contact me for any information regarding NaOH and CS2 proecess I have spent 40 years on this technology.
@@vinaymalwiya218 Thank you, I will contact you in case of need. Best Regards
@@vinaymalwiya218 Hi, can you answer the question why old clothes / fabric (made from cotton or other cellulose fibers) are not used as raw material for recycling into new viscose fibers?
@@GerManBearPig You are right sir, that old fabrics were not used as a subinstitute of raw material for Viscose fiber, may be because normally fabric is not made of pure viscose rayon, normally is it is mix of cotton, viscose , and or acrylic. Just for your information sir, now a days pure cotton fabric trials are going on in this regards and I am sure this will be successful. I am also involved in one of such trials. Thanks
Hello there.. Can you please share your context details. I have a few doubts.
Hello, do you mean details of the procedure showed?
@@sasarello8124 I am working with Ucliptus wood and would seeking some advise for industrial production.
The procedure is very simple (in lab): essentially consists in concentrating a 50% NMNO commercial solution up to 80% (at 100°C). Then, the cellullosic material is added and stirred untlil it is dissolved. A lot depends on the cellulosic material used that should be as much pure as possible. Heavy metals depomposes NMNO, calcium and magnesium salts, if present, precipitates in the viscous phase. Nature of cellullose is also important: from my knowledge some sources, such as eucalyptus works better than others. Last but not least, it is better to use antioxidants to limit NMNO decomposition. One of them is pyrogallol. Regards the industrial reaction and some more usefull details, in US 2016214302A1 you can find a lot of usefull informations. Best regards.
@@sasarello8124 thank you so much for taking your time to reply me
@@sasarello8124 Thank you so much :)
I tried this method but it was not viscos as 1:49 as. Mine was too viscos. You should have a nother solution. I tried with waste cotton.
Hi Necip, In the video I tried to use equipment as much simple as possible but in each case the solution will be very viscous. In the comercial process temperature is keep high and high pressure extrusors are used to obtain the fiber filaments. Moreover, to optimize the process, cellulose of high purity (in particular no metals, both heavy ones that destroys NMNO but also calcium that makes insoluble precipitates into the viscous solution) is mandatory. In summary, the Lyocell process is apparently very simple but in reality it is not. However, Lyocell if compared with methods like xanthate or cuprammonium is much more enviromentally benign. However, this is my opinion.
@@sasarello8124Hi, If you'd seen my mix, you'd know how little viscous yours is. If you give your e-mail address, I will send you the details of the video by e-mail. You will be surprised.
@@necipsahin8377 OK: ale.gagliardini@gmail.com
💪🏻💪🏻Grande Alex👋🏻👋🏻
What about koh+h2o2to decompose cellulosic material
hello! amazing experiment, may i have your email? i'd like to contact you regarding something
ale.gagliardini@gmail.com - Best regards
@@sasarello8124 can you check your email , thank you again.