Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites

This study was based on preparation of low density polyethylene (LDPE) and natural rubber (NR) composites with three types of fillers (Silica, Corn Starch and Coconut Husk) and different contents (10, 20 and 30 phr) using three different mixing methods. These methods focused on the mixing order of f...

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Main Author:	Abdulbaset, Mohamed Erfieda
Format:	Thesis
Language:	English
Subjects:	Low density polyethylene (LDPE) Natural rubber (NR) Fillers Silica composite Corn starch Coconut husk
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/1/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/2/p.%201-24.pdf
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spelling	my-unimap-217542012-11-14T01:35:00Z Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites Abdulbaset, Mohamed Erfieda This study was based on preparation of low density polyethylene (LDPE) and natural rubber (NR) composites with three types of fillers (Silica, Corn Starch and Coconut Husk) and different contents (10, 20 and 30 phr) using three different mixing methods. These methods focused on the mixing order of filler into LDPE/NR (mixing I), in LDPE (mixing II) or in NR (mixing III). All the compounding is carried out by Brabender internal mixer at 150 oC for 10 minutes. In mixing I, LDPE was mixed with NR followed by addition of filler. Mixing II, LDPE was mixed with filler followed by addition of NR. Mixing III, the filler was mix with NR by two-roll mills and followed with LDPE in internal mixer. Result indicated that the tensile strength in mixing I and II methods was increased with the increasing of inorganic filler (Silica) content, but decreased with increasing content of silica in mixing III method. Silica composite in mixing II achieved the highest tensile strength. At all mixing methods the tensile strength for LDPE/NR composites with the organic fillers (Corn Starch and Coconut Husk) decreased when the filler content increased but the tensile strength with addition of corn starch in mixing II method was decreased and increased when the content of corn starch increased. The highest tensile strength for organic filler composite was obtained from the mixing I method. The highest elongation at break for LDPE/NR composite with the fillers was at LDPE/NR composite with corn starch filler but the highest tensile modulus was at LDPE/NR composite with silica filler. The tensile fracture surface of the composites and soxhlet extraction showed the morphology of NR and LDPE as well as fillers are strongly dependent on filler types and also mixing methods, where addition of silica to LDPE/NR composite was tended to prefer NR phase more than LDPE phase. Addition of corn starch filler to LDPE/NR composite designated better dispersion but with addition of coconut husk to LDPE/NR composite showed poor dispersion and morphology compared with addition of corn starch filler. Universiti Malaysia Perlis (UniMAP) 2011 Thesis en http://dspace.unimap.edu.my/123456789/21754 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/1/Full%20text.pdf 50b0f9d06f193a98dc454eb4af20ec93 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/2/p.%201-24.pdf 36d3a4084a8d71d6beef31871e6bd925 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/3/license.txt dfe19fd18c1f06a0a0f69d7168159439 Low density polyethylene (LDPE) Natural rubber (NR) Fillers Silica composite Corn starch Coconut husk School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Low density polyethylene (LDPE) Natural rubber (NR) Fillers Silica composite Corn starch Coconut husk
spellingShingle	Low density polyethylene (LDPE) Natural rubber (NR) Fillers Silica composite Corn starch Coconut husk Abdulbaset, Mohamed Erfieda Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites
description	This study was based on preparation of low density polyethylene (LDPE) and natural rubber (NR) composites with three types of fillers (Silica, Corn Starch and Coconut Husk) and different contents (10, 20 and 30 phr) using three different mixing methods. These methods focused on the mixing order of filler into LDPE/NR (mixing I), in LDPE (mixing II) or in NR (mixing III). All the compounding is carried out by Brabender internal mixer at 150 oC for 10 minutes. In mixing I, LDPE was mixed with NR followed by addition of filler. Mixing II, LDPE was mixed with filler followed by addition of NR. Mixing III, the filler was mix with NR by two-roll mills and followed with LDPE in internal mixer. Result indicated that the tensile strength in mixing I and II methods was increased with the increasing of inorganic filler (Silica) content, but decreased with increasing content of silica in mixing III method. Silica composite in mixing II achieved the highest tensile strength. At all mixing methods the tensile strength for LDPE/NR composites with the organic fillers (Corn Starch and Coconut Husk) decreased when the filler content increased but the tensile strength with addition of corn starch in mixing II method was decreased and increased when the content of corn starch increased. The highest tensile strength for organic filler composite was obtained from the mixing I method. The highest elongation at break for LDPE/NR composite with the fillers was at LDPE/NR composite with corn starch filler but the highest tensile modulus was at LDPE/NR composite with silica filler. The tensile fracture surface of the composites and soxhlet extraction showed the morphology of NR and LDPE as well as fillers are strongly dependent on filler types and also mixing methods, where addition of silica to LDPE/NR composite was tended to prefer NR phase more than LDPE phase. Addition of corn starch filler to LDPE/NR composite designated better dispersion but with addition of coconut husk to LDPE/NR composite showed poor dispersion and morphology compared with addition of corn starch filler.
format	Thesis
author	Abdulbaset, Mohamed Erfieda
author_facet	Abdulbaset, Mohamed Erfieda
author_sort	Abdulbaset, Mohamed Erfieda
title	Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites
title_short	Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites
title_full	Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites
title_fullStr	Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites
title_full_unstemmed	Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites
title_sort	effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (ldpe/nr) composites
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/1/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/21754/2/p.%201-24.pdf
_version_	1747836773846745088

Effect of filler’s type, content and mixing method on properties of low density polyethylene/natural rubber (LDPE/NR) composites

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