Next Article in Journal
Atomistic Studies of Mechanical Properties of Graphene
Next Article in Special Issue
Evaluation of the Thickness and Oxygen Transmission Rate before and after Thermoforming Mono- and Multi-layer Sheets into Trays with Variable Depth
Previous Article in Journal
Biopolymer Electrolyte Based on Derivatives of Cellulose from Kenaf Bast Fiber
Article Menu

Export Article

Open AccessArticle
Polymers 2014, 6(9), 2386-2403; doi:10.3390/polym6092386

Barrier Properties of Polylactic Acid in Cellulose Based Packages Using Montmorillonite as Filler

1
Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Campus Universitario No. 2, C.P. 31125, Chihuahua, Chih., Mexico
2
Grupo COPAMEX, Ave. de la Juventud No. 280, C.P. 66450, San Nicolás de los Garza, N.L., Mexico
3
Centro de Investigación en Materiales Avanzados, S.C., Laboratorio Nacional de Nanotecnología, Miguel de Cervantes No. 120, C.P. 31109, Chihuahua, Chih., Mexico
*
Author to whom correspondence should be addressed.
Received: 7 July 2014 / Revised: 20 August 2014 / Accepted: 2 September 2014 / Published: 19 September 2014
(This article belongs to the Special Issue Packaging Films)
View Full-Text   |   Download PDF [1448 KB, uploaded 19 September 2014]   |  

Abstract

Polylactic acid (PLA) and montmorillonite (CB) as filler were studied as coatings for cellulose based packages. Amorphous (AM) and semi crystalline (SC) PLA were used at different concentrations according to a 2 × 6 × 3 full factorial experimental design. CB loading was three concentrations and coating was performed by casting. Contact angle (CA), water vapor (WVP) and grease permeabilities were measured for each resultant package and were compared to commercial materials (Glassine Paper, Grease Proof Papers 1 and 2 produced commercially). Significant differences were found and the main factors were the type and concentration of PLA. The best values were: for grease penetration, +1800 s; WVP from 161.36 to 237.8 g·µm·kPa−1·m−2·d−1 and CA from 69° to 73° for PLA–AM 0.5% and CB variable. These parameters are comparable to commercial packages used in the food industry. DSC revealed three different thermal events for PLA–SC and just Tg for PLA–AM. Crystallinity was also verified, obtaining a ΔHcrys of 3.7 J·g−1 for PLA–SC and 14 J·g−1 for PLA–SC–BC, evidencing clay interaction as a crystal nucleating agent. Differences found were explained on terms of the properties measured, where structural and chemical arrays of the coatings play a fundamental role for the barrier properties. View Full-Text
Keywords: polylactic acid; grease barrier; water vapor permeability; cellulose; montmorillonite polylactic acid; grease barrier; water vapor permeability; cellulose; montmorillonite
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Aldana, D.S.; Villa, E.D.; De Dios Hernández, M.; Sánchez, G.G.; Cruz, Q.R.; Gallardo, S.F.; Castillo, H.P.; Casarrubias, L.B. Barrier Properties of Polylactic Acid in Cellulose Based Packages Using Montmorillonite as Filler. Polymers 2014, 6, 2386-2403.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top