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Title: Processing of poly(hydroxybutyrate-co-hydroxyvalerate)-based bionanocomposite foams using supercritical fluids

Source: Journal of Materials Research, Volume 27, Issue 11, 2012, pp. 1506 1517; 2012.

Author(s)Javadi, Alireza; Srithep, Yottha; Clemons, Craig C.; Turng, L-S.; Gong, Shaoqin.

Publication Year: 2012  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-2A

Abstract: Supercritical fluid (SCF) N2 was used as a physical foaming agent to fabricate microcellular injection-molded poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV)–poly(butylene adipate-co-terephthalate) (PBAT)–hyperbranched-polymer (HBP)–nanoclay (NC) bionanocomposites. The effects of incorporating HBP and NC on the morphological, mechanical, and thermal properties of both solid and microcellular PHBV–PBAT blends were studied. NC exhibited intercalated structures in solid components, but showed a mixture of exfoliated and intercalated structures in the corresponding microcellular nanocomposites. The addition of NC improved the thermal stability of the resulting nanocomposites. The addition of HBP and NC reduced the cell size and increased the cell density of microcellular components. The addition of HBP and NC enhanced the degree of crystallinity for both solid and microcellular components. Moreover, with the addition of HBP, the area under tan d curve, specific fracture toughness, and strain-at-break of the PHBV-based nanocomposite increased significantly whereas the storage modulus, specific Young’s modulus, and specific tensile strength decreased.

Keywords: Nanoclay; Biopolymer; HPBV; Microcellular; hyperbranched polymer

Publication Review Process: Formally Refereed

File size: 386 kb(s)

Date posted: 09/18/2012

This publication is also viewable on Treesearch:  view
RITS Product ID: 61436
Current FPL Scientist associated with this product
Clemons, Craig M.
Materials Research Engineer
  

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