Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites

In this study, sago starch was physically blended with low-density polyethylene (LDPE) via the melt blending process followed by injection molding to produce LDPE/sago starch (LPS) composites. The sago starch content was varied from 5 to 30 wt% of LDPE. The addition of starch to LDPE reduced the mel...

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Main Authors: Beg, M. D. H., Kormin, S., Mohd Bijarimi, Mat Piah, Zaman, Haydar U.
Format: Article
Language:English
Published: Wiley 2016
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/12700/1/Preparation%20and%20Characterization%20of%20Low-Density%20Polyethylene-Thermoplastic%20Starch%20Composites.pdf
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author Beg, M. D. H.
Kormin, S.
Mohd Bijarimi, Mat Piah
Zaman, Haydar U.
author_facet Beg, M. D. H.
Kormin, S.
Mohd Bijarimi, Mat Piah
Zaman, Haydar U.
author_sort Beg, M. D. H.
collection UMP
description In this study, sago starch was physically blended with low-density polyethylene (LDPE) via the melt blending process followed by injection molding to produce LDPE/sago starch (LPS) composites. The sago starch content was varied from 5 to 30 wt% of LDPE. The addition of starch to LDPE reduced the melt flow rate (MFR), the tensile strength, and impact strength, whereas the tensile modulus, flexural strength, and flexural modulus increased. To improve poor mechanical properties of the LPS, LDPE/glycerol thermoplastic starch (LPGTS) or LDPE/2:1 mixture of glycerol and urea thermoplastic starch (LPMTS) was used in this study. The effect of compatibilizer (maleic anhydride) on properties of the LPMTS specimens was also investigated. The LPS, LPGTS, LPMTS, and maleic anhydride treated LPMTS (LPMTSM) samples were analyzed for the MFR, mechanical properties (tensile, flexural, and impact tests), thermal (TGA and DSC), and morphological properties. As a result, the incorporation of plasticizers or compatibilizer into LPS caused the considerable improvement in MFR and mechanical properties. Moreover, the presence of compatibilizer produced better properties for the LPMTSM sample than for the other samples, indicating better dispersion and homogeneity of starch to the matrix. In addition, thermal stability, DSC, and phase morphology were carried out for different LPS samples.
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spelling UMPir127002018-07-16T08:06:40Z http://umpir.ump.edu.my/id/eprint/12700/ Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites Beg, M. D. H. Kormin, S. Mohd Bijarimi, Mat Piah Zaman, Haydar U. TP Chemical technology In this study, sago starch was physically blended with low-density polyethylene (LDPE) via the melt blending process followed by injection molding to produce LDPE/sago starch (LPS) composites. The sago starch content was varied from 5 to 30 wt% of LDPE. The addition of starch to LDPE reduced the melt flow rate (MFR), the tensile strength, and impact strength, whereas the tensile modulus, flexural strength, and flexural modulus increased. To improve poor mechanical properties of the LPS, LDPE/glycerol thermoplastic starch (LPGTS) or LDPE/2:1 mixture of glycerol and urea thermoplastic starch (LPMTS) was used in this study. The effect of compatibilizer (maleic anhydride) on properties of the LPMTS specimens was also investigated. The LPS, LPGTS, LPMTS, and maleic anhydride treated LPMTS (LPMTSM) samples were analyzed for the MFR, mechanical properties (tensile, flexural, and impact tests), thermal (TGA and DSC), and morphological properties. As a result, the incorporation of plasticizers or compatibilizer into LPS caused the considerable improvement in MFR and mechanical properties. Moreover, the presence of compatibilizer produced better properties for the LPMTSM sample than for the other samples, indicating better dispersion and homogeneity of starch to the matrix. In addition, thermal stability, DSC, and phase morphology were carried out for different LPS samples. Wiley 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12700/1/Preparation%20and%20Characterization%20of%20Low-Density%20Polyethylene-Thermoplastic%20Starch%20Composites.pdf Beg, M. D. H. and Kormin, S. and Mohd Bijarimi, Mat Piah and Zaman, Haydar U. (2016) Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites. Advances in Polymer Technology, 35 (1). p. 21521. ISSN 1098-2329. (Published) http://dx.doi.org/10.1002/adv.21521 DOI: 10.1002/adv.21521
spellingShingle TP Chemical technology
Beg, M. D. H.
Kormin, S.
Mohd Bijarimi, Mat Piah
Zaman, Haydar U.
Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites
title Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites
title_full Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites
title_fullStr Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites
title_full_unstemmed Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites
title_short Preparation and Characterization of Low-density Polyethylene/Thermoplastic Starch Composites
title_sort preparation and characterization of low density polyethylene thermoplastic starch composites
topic TP Chemical technology
url http://umpir.ump.edu.my/id/eprint/12700/1/Preparation%20and%20Characterization%20of%20Low-Density%20Polyethylene-Thermoplastic%20Starch%20Composites.pdf
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