**4. Conclusion**

50 Thermoplastic Elastomers

extruder

Starch+ chitosan + oregano essential oil Single screw extruder Pelissari et al.

Cassava starch+ glycerol + vegetable fibres Single screw extruder Debiagi et al.

Cassava TPS + PBAT+ surfactant Tween 80 Extrusion Brandelero et

TPS + glycerol Extrusion Rosa et al.

TPS + PLA Co-rotating twin-screw

Process Authors

Hot-melt extrusion Li et al. (2011)

Melt intercalation technique Mitrus &

Buss co-kneading extruder Thuwall et al.

Twin-screw extrusion Mondragón et

Extrusion Frosta et al.

Extrusion Dean et al.

Extrusion technology Flores et al.

Twin-screw extrusion and cylindrical starch foam shapes

Singlestep twinscrew extrusion

or by a twostep process involving compounding (pelleting) of the ingredients before film formation

compression molding

screw/single screw extrusion

Świerz-Motysia et al. (2011)

Mościcki (2011)

(2011)

(2010)

(2006)

al. (2009)

al. (2010)

(2011)

(2011)

(2010)

(2003)

(2008)

Sreekumar (2010)

Rodriguez-Gonzalez et al.

Pushpadass et al.(2010)

Nabar et al. (2006)

Starch+ Polymers or another composite

triethanolamine

modified nano-clays

potato starch+ glycerol

clay nanocomposites

(LDPE)

Thermoplastic acorn starch(TPAS)/ Polycaprolactone (PCL) + different plasticizers:ethylene glycol, glycerol, monoethanolamine, iminobisetnanol and

TPS + poly (butylene adipate-coterephthalate – PBAT) + organically

(hydroxypropylated high amylose corn starch + amylase+ water and additives (poly-hydroxyamino ether- PHAE)

High amylose potato starch and normal

Corn starch+ low density polyethylene

TPS–silica (sio2) PVOH composite films +

High amylose hydroxypropylated starch +

Tapioca starch–glycerol+ xanthan gum

Wheat flour+ glycerol Extrusion followed by

TPS+ glycerol One-step combined twin-

Table 3. Biodegradable polimers obtained with thermoplastic extrusion

tetraethyl orthosilicate (TEOS)

films nanosilicate additives+

(XG) + potassium sorbate (PS)

montmorillonite

TPS /natural rubber/montmorillonite type

The thermoplastic extrusion process is capable of causing changes in starch, making it present a large variety of applications both in the food industry and in other industries; and, as a matter of fact, the use of starches in packagings has increased due to the easy process in modifying and promoting interactions between starch and other polymers.
