Page 167 - Handbook of Adhesion Promoters

160 Selection of Adhesion Promoters for Different

8.16 POLY(LACTIC ACID)

Lignin was used as a natural adhesion promoter for cotton fiber reinforced poly(lactic
1
acid). The adhesion between fiber and matrix was improved by the addition of lignin. 1
This had improved tensile strength and Young modulus but impact properties were
1
1
decreased. The impact strength is reduced by the embrittlement of the composite.
The polyethyleneimine acts as an adhesion promoter to achieve good adhesion of the
2
coating to polylactide. Suitable polyethyleneimines are Lupasol and Polymin P.
A stent comprises a biodegradable polymer (PLA) functionalized with an adhesion-
enhancing aminoacid (oxidized 3,4-dihydroxyphenylalanine containing quinone or
3
semiquinone moiety).
REFERENCES
1 Graupner, N, J. Mater. Sci., 43, 5222-9, 2008.
2 Ibanez, M, WO2014071277, Michelman, Inc., May 8, 2014.
3 Warner, RW; Kangas, S; Atanasoska, L; Ippoliti, JT; Schewe, SR, US20110282437, Boston Scientific
Scimed, Inc., Nov. 17, 2011.