Journal Volumes


Visitors
ALL : 2,195,642
TODAY : 7,513
ONLINE : 217



















  JOURNAL DETAIL



Preparation and Properties of Polylactide Bio-composites with Surface-Modified Silica Particles


Paper Type 
Contributed Paper
Title 
Preparation and Properties of Polylactide Bio-composites with Surface-Modified Silica Particles
Author 
Narisara Jaikaew, Atitsa Petchsuk and Pakorn Opaprakasit
Email 
pakorn@siit.tu.ac.th
Abstract:
Biodegradable plastics have become interesting alternative materials in packaging applications, because of their lower environmental impacts. Among these, polylactide (PLA) has played a key role, pertaining to many of its excellent properties. However, its commercialization as packaging materials for products sensitive to light, gas, or temperature changes, such as fresh vegetables and fruits, is challenging, due to its moderate gas transmission rates, and lower mechanical properties, compared to conventional plastic products. One effective method to solve this problem is the adding of inorganic fillers to the PLA resin to improve its properties. In this study, PLA bio-composite films have been developed by introducing low-cost silica particles as a reinforcing agent. To effectively achieve property enhancements, compatibility between the 2 components needs to be improved. Surface modification of the inorganic silica particles is conducted by coating with poly (lactic acid-grafted-chitosan) copolymer (PCT). Commercial silica particles (c-silica), with average particle size of 1-5 mm, were coated with PCT copolymer, employing a phase inversion emulsification (PIE) technique. After the coating process, the average size of the modified particles (m-silica) decreases to 17 nm, as the coated PCT layers on the particle surfaces prevent agglomeration of the silica particles by providing steric repulsion. The resulting m-silica and c-silica are then used in the preparation of PLA/silica bio-composite films by varying silica types and their contents from 0-5.0 wt%. Thermal and mechanical properties, light transmission, and gas permeability of the 2 bio-composite systems, are compared.  PLA/m-silica exhibit greater tensile behaviors at all particle compositions. Variations in CO2/O2 permeability of bio-composite films can be optimized by changing the silica compositions. At 5.0 wt% of m-silica, the highest decrease in light transmission at 4, 8, and 16% for UV-A, UV-B, and visible regions, respectively, are observed.  The resulting PLA/m-silica bio-composite films have high potential for use as smart packaging for fresh vegetables and fruits.
Start & End Page 
2059 - 2068
Received Date 
2017-11-01
Revised Date 
Accepted Date 
2018-04-30
Full Text 
  Download
Keyword 
packaging, polylactide, silica particles, bio-composite, permeability, light transmission
Volume 
Vol.45 No.5 (Special 2018)
DOI 
Citation 
Jaikaew N., Petchsuk A. and Opaprakasit P., Preparation and Properties of Polylactide Bio-composites with Surface-Modified Silica Particles, Chiang Mai J. Sci., 2018; 45(5): 2059-2068.
SDGs
View:596 Download:215

  RELATED ARTICLE

Permeable Blocks with Waste Glass as Coarse Aggregate
Article ID: e2023062
Author:Jenjinta Punyasurb, Suthee Wattanasiriwech and Darunee Wattanasiriwech
Vol.50 No.6 (November 2023) View: 362 Download:347
Optimization of Melt-mixing Transesterification of Polylactide by Polyethylene Glycol Employing Response Surface Methodology
page: 69 - 80
Author:Narisara Jaikaew, Rafael Auras and Pakorn Opaprakasit
Vol.49 No.1 (Special Issue I : Jan 2022) View: 728 Download:503
Preparation and Properties of Sodium Alginate/Carboxymethyl Cellulose Films for Packaging Application
page: 1634 - 1644
Author:Rejish Ramakrishnan and Senthil Vadivu Kulandhaivelu
Vol.48 No.6 (November 2021) View: 843 Download:967
Property Enhancement of Polylactide Monofilaments by Cold-Drawing Process and Solvent Infusion
page: 323 - 331
Author:Jirawan Jindakaew, Chalita Ratanatawanate, Takeshi Kikutani, and Pakorn Opaprakasit*
Vol.48 No.2 (March 2021) View: 902 Download:465
Combined Effect of Calcium Chloride and Modified Atmosphere Packaging on Texture and Quality of Minimally-Processed Litchi Fruit
page: 556 - 569
Author:Putkrong Punumong [a], Sang Moo Kim [b], Jurmkwan Sangsuwan [a] and Nithiya Rattanapanone [a,c]*
Vol.43 No.3 (APRIL 2016) View: 568 Download:165
Effects of Packaging Types and Storage Temperatures on the Shelf Life of Fresh Rice Noodles under Vacumm Conditions
page: 579 - 589
Author:Pornchai Rachtanapun and Thitima Tangnonthaphat
Vol.38 No.4 (OCTOBER 2011) View: 797 Download:359



Search in this journal


Document Search


Author Search

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Popular Search






Chiang Mai Journal of Science

Faculty of Science, Chiang Mai University
239 Huaykaew Road, Tumbol Suthep, Amphur Muang, Chiang Mai 50200 THAILAND
Tel: +6653-943-467




Faculty of Science,
Chiang Mai University




EMAIL
cmjs@cmu.ac.th




Copyrights © Since 2021 All Rights Reserved by Chiang Mai Journal of Science