Page 334 - Biodegradable Polyesters

312 12 Biodegradable Polyesters Polymer–Polymer Composites

Aluminium plates Teflon sheets

Spacers
PLLA/PGA
wire
(a)

Quench to
room
temperature
between
aluminium
Heated platens blocks
T = 185 °C

(b) (c)

(d)
Figure 12.8 Cross section of layup of a aluminum blocks at room temperature to
plate wound with PLLA/PGA filament before quench the film (c). The process results in
compression molding (a). Hot pressing pro- transformation of the drawn wire into a uni-
cedure (b). Quenching of film between two form film (d).

Figure 12.9 PLLA/PGA MFC film.

of 1–2 μm. The higher PGA content of PLLA/PGA (70/30 by wt%) resulted
in more frequent occurrence of clusters of PGA particle in close proximity.
The MFCs resulting from cold-drawing and subsequent compression molding
of the PLLA/PGA blends were fractured parallel to the fibril direction – the
resulting surfaces are shown in Figure 12.10c,d. PLLA/PGA MFC (80/20 by