Low-filled toughened composites of poly(hexano-6-lactam)-block-polybutadiene-block-poly(hexano-6-lactam)/wollastonite by polymerization casting
1998; Wiley; Volume: 69; Issue: 11 Linguagem: Inglês
10.1002/(sici)1097-4628(19980912)69
ISSN1097-4628
AutoresJ. Stehl� ek, R. Puffr, F. Lednick�, V. Nov�kov�, Jan Roda,
Tópico(s)Silicone and Siloxane Chemistry
ResumoComposites consisting of 10–15 wt % wollastonite as an acicular filler and poly(hexano-6-lactam)-block-polybutadiene-block-poly(hexano-6-lactam) matrix (5–15 wt % polybutadiene blocks) were prepared by anionic polymerization of hexano-6-lactam. Hydroxyterminated polybutadiene in situ functionalized with toluene-2,4-diyl diisocyanate (TDI) was used as an initiator and sodium salt of hexano-6-lactam as a catalyst. To achieve a good dispergation and high adhesion to the matrix, the filler was modified with (3-aminopropyl)triethoxysilane and then functionalized either separately with N,N′-benzene-1,3-dicarbonylbis(hexano-6-lactam) or N-benzoyl-hexano-6-lactam or in situ functionalized with TDI. The increase in Young's modulus and decrease in elongation were achieved along with a moderate decrease in impact resistance. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2139–2146, 1998
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