Greetings! I have a research where I dissolve PLA in chloroform:methanol (3:1) for 3 hours and also PCL in chloroform:methanol (3:1) for 3 hours too. After that, I have to blend those two polimers together with magnetic stirrer. The question is, how long does it take to blend the solution of PLA and PCL with magnetic stirrer around 300 rpm? It would be better if you could refer your answer with journal. Thank you in any advance.
dear colleague ?????thank you for this question????
1-you can blended PLA with PCL Iin water under (80°C to 100°C) in (2 to 3 hours)
2-catalyst used (ALCL3 or other lewis acid cationic polymerization),( H2O2 or CuCl2 or HgCl2 radicalair polymerization),( lewis base anionic polymerization).
3-you can obtained your block copolymer (PLA-b-PCL) ?????
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Hi Evangelina,
I do not have a reference ready, but my first hand experience tells me that your two solutions should mix quite well in a short time. I would expect to obtain a homogeneous blend after 2 hours at 300 rpm. Just make sure to obtain a clear and transparent mixture: this assures you that the polymers are well dissolved and that you have one single phase.
Also, if you want proof that the blend is single-phase and stable, just mix for 2 hours and then stop, let rest for a few hours and check for any separation/precipitation.
Hope this helps,
Lukas
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