By Mikhail M Feldstein, Alexander P Moscalets
Self-adhering (tacky) fabrics or pressure-sensitive adhesives (PSA) shape a necessary a part of our daily lives, with new purposes of PSA coming up for all time throughout numerous industries. nearly all of latest PSA are hydrophobic rubber-like polymers, this means that they do not combine good with polar molecules. even though, it's accurately that caliber that will be of maximum sensible use in modern and medicine.
This ebook describes cutting edge hydrophilic PSA according to stoichiometric hydrogen bonded complexes of long-chain polymers (with repeating electron-donating practical teams) with complementary telechelic oligomers (with proton-donating terminal groups).
These kinds of adhesives may be simply produced through uncomplicated blending of father or mother polymers and oligomers in ideas or in melts. not like traditional hydrophobic adhesives, those hydrophilic adhesives are miscible with more than a few chemicals that experience hydrogen bonding or ionic sensible teams of their molecules. This contains quite a few medicinal drugs, polyelectrolytes, electroconducting or physiologically lively compounds, proteins and so on.
The booklet exhibits the molecular layout rules and specified attribute positive factors of assorted practical adhesive items in line with cutting edge cheesy polymer composites, together with:
- 'Smart' thermo-switchable adhesives adhering in the direction of the substrates of alternative polarity and hardness
- Mussel-inspired adhesives functioning in aqueous media
- Transdermal patches for stronger drug delivery
- Tooth whitening strips with adapted adhesion in the direction of dental tissues
- The loss of adhesion to mucosal membranes in oral cavity
- Many different complex items for scientific, beauty and commercial applications
The variety of useful polymers that may be used as father or mother parts for generating novel adhesives is massive, suggesting that the polymer mixing strategy may well revolutionise the adhesive within the coming decades.
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Extra info for Innovations in pressure-sensitive adhesive products
Sample text
Alginic acid, hyaluronic acid, CS, PEG, polyethylene oxide, polyacrylic acid (PAA) and PMAA, polyvinyl amines and cellulose derivatives. , PA and PB, can be employed as platforms for both tooth and mucosal bioadhesives. In this regard, how can the selectivity of polymer adhesion towards diverse biological substrates in the oral cavity be achieved? In order to design PSA materials for application in the oral cavity with a targeted adhesion toward teeth we only need consider the polymer hardness.
Feldstein, Journal of Adhesion, 2011, 87, 2, 111. 7. J. 441. 8. A. , R. 219. 42 Scientific Principles of Targeted Adhesion to Substrates of Varying Chemical Nature 9. A. 143. 10. A. , D. 97. 11. S. D. R. Linebach, Cereal Chemistry, 1993, 70, 744. 12. R. Bates, Journal of Applied Polymer Science, 1976, 20, 2941. 13. E. B. Messersmith, Langmuir, 2012, 28, 2200. 14. B. Van Meerbeek, J. De Munck, Y. Yoshida, S. Inoue, M. Vargas, P. Vijay, K. Van Landuyt, P. Lambrechts and G. Vanherle, Operative Dentistry, 2003, 28, 3, 215.
11. S. D. R. Linebach, Cereal Chemistry, 1993, 70, 744. 12. R. Bates, Journal of Applied Polymer Science, 1976, 20, 2941. 13. E. B. Messersmith, Langmuir, 2012, 28, 2200. 14. B. Van Meerbeek, J. De Munck, Y. Yoshida, S. Inoue, M. Vargas, P. Vijay, K. Van Landuyt, P. Lambrechts and G. Vanherle, Operative Dentistry, 2003, 28, 3, 215. 15. J. De Munck, K. Van Landuyt, M. Peumans, A. Poitevin, P. Lambrechts, M. Braem and B. Van Meerbeek, Journal of Dental Research, 2005, 84, 2, 118. 16. A. Sosnik, J.