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BIBTEX RIS

Structure and Mechanical Properties of Poly(lactic acid) Filled with (Starch nanocrystal)‐ graft ‐poly( ε ‐caprolactone)

2008; Wiley; Volume: 293; Issue: 9 Linguagem: Inglês

10.1002/mame.200800134

ISSN

1439-2054

Autores

Jiahui Yu, Fujin Ai, Alain Dufresne, Shanjun Gao, Jin Huang, Peter R. Chang,

Tópico(s)

Nanocomposite Films for Food Packaging

Resumo

Abstract Poly( ε ‐caprolactone) (PCL) was grafted to the surface of starch nanocrystals (StN) via microwave‐assisted ROP. The resultant nanoparticles were then incorporated into a poly(lactic acid) matrix to produce fully‐biodegradable nanocomposites with good mechanical properties. A loading level of 5 wt.‐% StN ‐g‐ PCL resulted in simultaneous enhancements of strength and elongation. The StN ‐g‐ PCL self‐aggregated as rubbery microparticles to enhance the elongation by ca. 10‐fold over that of neat PLA. Meanwhile, the grafted PCL chains were miscible with PLA and formed a stress‐transferring interface to the StN, providing a reinforcing function. magnified image

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