http://www.cnr.it/ontology/cnr/individuo/prodotto/ID292757
Cationization of heparin for film applications (Articolo in rivista)
- Type
- Label
- Cationization of heparin for film applications (Articolo in rivista) (literal)
- Anno
- 2015-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.carbpol.2014.09.021 (literal)
- Alternative label
?imkovi?, Ivan; Mendichi, Raniero; Kelnar, Ivan; Filip, Jaroslav; Hricovíni, Milo? (2015)
Cationization of heparin for film applications
in Carbohydrate polymers
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- ?imkovi?, Ivan; Mendichi, Raniero; Kelnar, Ivan; Filip, Jaroslav; Hricovíni, Milo? (literal)
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- http://www.scopus.com/record/display.url?eid=2-s2.0-84907546152&origin=inward (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- Slovak Academy of Sciences; Consiglio Nazionale delle Ricerche; Institute of Macromolecular Chemistry of the Academy of Sciences of the Czech Republic (literal)
- Titolo
- Cationization of heparin for film applications (literal)
- Abstract
- Trimethylammonium-2-hydroxypropyl-(TMAHP) spacer was introduced into heparin (H) and theprepared films were characterized by elemental analysis, NMR, SEC-MALS, TG/DTG/DTA, AFM andmechanical tester. When quaternized at the ratio of H/NaOH/alkylating agent/H2O = 0.1-1/0-2/0.1-1/50-500 mmol, H was substituted at A6 and A3 positions. The formation of double-substituted structuresby substitution of free hydroxyl group of the previously introduced TMAHP substituent is evident. Inthe absence of NaOH (H/GTMAC/H2O = 1:1:500) the most drastic decrease of Mnto 8.639 kg/mol andMw/Mnat 1.48 was observed in comparison to H (Mn= 9532 g/mol with Mw/Mn= 1.38). The film mechan-ical properties were better on H (E = 4030 MPa; ?b= 65 MPa; ?b= 4.6%) than on quaternized specimens(? = 2500-3340 MPa; ?b= 25-40 MPa; ?b= 1.7-1.8%). The AFM images did not prove relation betweenmechanical properties and surface shape. (literal)
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