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PLA/nanoclay cast film composites us...

Lewitus, Dan.

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PLA/nanoclay cast film composites using various polymer-clay concentrates.

Record Type:	Electronic resources : Monograph/item
Title/Author:	PLA/nanoclay cast film composites using various polymer-clay concentrates./
Author:	Lewitus, Dan.
Description:	142 p.
Notes:	Source: Masters Abstracts International, Volume: 43-01, page: 0317.
Contained By:	Masters Abstracts International43-01.
Subject:	Plastics Technology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1421867
ISBN:	0496266128

PLA/nanoclay cast film composites using various polymer-clay concentrates.
Lewitus, Dan.

PLA/nanoclay cast film composites using various polymer-clay concentrates. - 142 p.

Source: Masters Abstracts International, Volume: 43-01, page: 0317.

Thesis (M.S.Eng.)--University of Massachusetts Lowell, 2004.

Two different organically modified montmorillonite clays were introduced at a 5% loading level into two different cast film grades of polylactic acid (PLA) using masterbatch carriers of the different PLA's (PDLLA, PLLA) and two biodegradable aromatic aliphatic polyesters, that were loaded with 20% of organically modified montmorillonite. The PLA compounds were prepared using a twin screw compounding extruder, while the films were prepared using a single screw cast film extruder. The thermal, mechanical and barrier properties of the films were examined in order to determine the effect of the different clays and different carriers on the polymer-clay interaction. Different and exciting results showed the effect of the different materials on the morphology and properties of the films, such as a 36% increase in tensile modulus, a decrease of 15°C in the cold crystallization temperature, and a decrease of 33% of the O2 gas permeation. The improvement of properties of the PLA films with the use of montmorillonite may provide an enhanced range of uses for biodegradable films, especially in the field of packaging of goods.

ISBN: 0496266128Subjects--Topical Terms:

1023683
Plastics Technology.

PLA/nanoclay cast film composites using various polymer-clay concentrates.
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245 1 0 $a PLA/nanoclay cast film composites using various polymer-clay concentrates.
300 $a 142 p.
500 $a Source: Masters Abstracts International, Volume: 43-01, page: 0317.
500 $a Supervisors: Stephen P. McCarthy; Amos Ophir.
502 $a Thesis (M.S.Eng.)--University of Massachusetts Lowell, 2004.
520 $a Two different organically modified montmorillonite clays were introduced at a 5% loading level into two different cast film grades of polylactic acid (PLA) using masterbatch carriers of the different PLA's (PDLLA, PLLA) and two biodegradable aromatic aliphatic polyesters, that were loaded with 20% of organically modified montmorillonite. The PLA compounds were prepared using a twin screw compounding extruder, while the films were prepared using a single screw cast film extruder. The thermal, mechanical and barrier properties of the films were examined in order to determine the effect of the different clays and different carriers on the polymer-clay interaction. Different and exciting results showed the effect of the different materials on the morphology and properties of the films, such as a 36% increase in tensile modulus, a decrease of 15°C in the cold crystallization temperature, and a decrease of 33% of the O2 gas permeation. The improvement of properties of the PLA films with the use of montmorillonite may provide an enhanced range of uses for biodegradable films, especially in the field of packaging of goods.
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