Dear Colleagues.
Currently, I am developing an adhesive for homecare product. I am blending polymer A, polymer B (they have similar structure) and resin X. Their Tg is around -60oC, -10oC, and 72oC respectively. The blending method is only by heating (>150oC ) and there is no compatibilizer added.
The polymer blend somehow shows good properties as an adhesive, except for its tackiness. Its surface also felt relatively dry. It also needs a long dwell time to "stick" to an object.
I read some publications and I assume this is caused by the polymer blend's high viscosity and decreases its wettability. Is my assumption correct?
From the experiment, the blend that just consists of polymer A and B is 4 times more viscous than the blend that just consists of polymer A and resin X. Is it possible if polymer A and B make some cross-link structure? I do not have access to investigate the morphology of the polymer blend and its thermal and viscoelasticity properties. Explanation about the interactions of polymer blends and their relationship with their adhesive properties is really helpful.
Thank you.
Dear Ariq Abdillah, takniness is a rheology aspects that reflects the mobility of chains and their relative interaction. Spreading which is function of viscosity is very important as it determines the surface cavities filling ability of the surface of the solids to be joined. The following documents are good in covering the detrimental factors behind tackiness and good adhesion. My Regards
https://doi.org/10.1016/0095-8522(47)90017-2
10.1103/PhysRevLett.82.936
https://doi.org/10.1093/icb/42.6.1123
https://doi.org/10.1080/0021846708544601
Might be of interest to you. https://doi.org/10.1002/pola.29290
Refer this paper It may help you. All the bestArticle Tissue Adhesive Catechol-Modified Hyaluronic Acid Hydrogel f...
Thank you very much for the answers. Now I get a more comprehensive understanding of this topic.
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