biopolymer-clay nanocomposites

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NATURE OF COMPONENTS INTERACTION IN BIOPOLYMER – CLAY NANOCOMPOSITES Līva DZENE Bibliographical project Ottawa, 5 November 2012 CHM8342 Clay Minerals Chemistry

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Page 1: Biopolymer-clay nanocomposites

NATURE OF COMPONENTS INTERACTION IN BIOPOLYMER – CLAY

NANOCOMPOSITES

Līva DZENE Bibliographical project

Ottawa, 5 November 2012

CHM8342 Clay Minerals Chemistry

Page 2: Biopolymer-clay nanocomposites

Outline

Interest

Interaction

Biopolymers

Future perspective

Ottawa 2 2012.11.05.

Page 3: Biopolymer-clay nanocomposites

Why biopolymer-clay nanocomposites?

2012.11.05. Ottawa 3

Interest Interaction Biopolymers Future perspective

(McDonough&Braungart,2001) (Plastics – the Facts 2012)

Page 4: Biopolymer-clay nanocomposites

Why biopolymer-clay interaction?

2012.11.05. Ottawa 4

Interest Interaction Biopolymers Future perspective

Page 5: Biopolymer-clay nanocomposites

Type of interaction

2012.11.05. Ottawa 5

Interest Interaction Biopolymers Future perspective

• Melt processing

• Casting

• Water

• Organic solvents (polar, apolar)

• Montmorillonite

• Kaolinte

• Sepiolite

• Organoclay

• Cationic

• Anionic

• Non-ionic Charge

of polymer

Clay mineral

Prepara-tion

process Solvent

Page 6: Biopolymer-clay nanocomposites

Type of interaction

2012.11.05. Ottawa 6

Interest Interaction Biopolymers Future perspective

(Theng, 2012)

Cation exchange process; Increase of ionic strenght will increase the adsorption

Association with cation through ion-dipole interaction; Interaction process determined by surface accessibility

H-bond with edges at low pH Complexation with polyvalent cations

Page 7: Biopolymer-clay nanocomposites

Biopolymers used for nanocomposite preparation

2012.11.05. Ottawa 7

Interest Interaction Biopolymers Future perspective

Proteins

Corn zein

Wheat gluten

Gelatin

Soy protein

Whey protein

Silk fibroin

Polysaccharides

Starch

Cellulose

Chitosan

Bacterial polymers

PLA

PHAs

(Vroman&Tighzert, 2009)

Page 8: Biopolymer-clay nanocomposites

Protein-clay nanocomposites

2012.11.05. Ottawa 8

Interest Interaction Biopolymers Future perspective

Biomaterials Controlled drug delivery

SF-MMT nanocomposites in acid and nearly neutral media (Dang et al., 2010)

Page 9: Biopolymer-clay nanocomposites

Polysaccharide-clay nanocomposites

2012.11.05. Ottawa 9

Interest Interaction Biopolymers Future perspective

Food packaging «Smart» materials

(Darder et al., 2003) (An & Dultz, 2007

(Zhang, X. et al., 2010) (Chivrac et al., 2010) (Zhang, Q.-X. et al., 2007)

Page 10: Biopolymer-clay nanocomposites

Bacterial polymer – clay nanocomposites

2012.11.05. Ottawa 10

Interest Interaction Biopolymers Future perspective

Polylactic acid (PLA) Polyhydroxyalkanoates (PHAs): poly(3-hydroxybutyrate) PHB → R=CH3

Poly(3-hydroxyvalerate) PHV → R=C2H5

(Okamoto, 2012) (Plackett, 2012)

Botana et al. (2010). Effect of modified montmorillonite on biodegradable PHB nanocomposites. Applied Clay Science, 47(3-4), 263–270.

Food packiging ???

Page 11: Biopolymer-clay nanocomposites

Future perspectives

2012.11.05. Ottawa 11

Interest Interaction Biopolymers Future perspective

More clay minerals….

More biopolymers…

More applications…

Surface studies…

Page 12: Biopolymer-clay nanocomposites

Conclusion

2012.11.05. Ottawa 12

Interest Interaction Biopolymers Future perspective

Place in sustainable development, yet economical and

technical issues to overcome

Merging knowledge from different research domains

can enhance general understanding

Electrostatic, H-bond, van der Waals interactions

Importance of raw materials and processing conditions

Page 13: Biopolymer-clay nanocomposites

Thank you for your attention! ---

Merci pour votre attention!

Ottawa 13 2012.11.05.