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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
Published:	Universiti Malaysia Perlis (UniMAP) 2012
Subjects:	Low density polyethylene (LDPE) Natural rubber (NR) Fillers Silica composite Corn starch Coconut husk
Online Access:	http://dspace.unimap.edu.my/xmlui/handle/123456789/21754
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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 Low density polyethylene (LDPE) Natural rubber (NR) Fillers Silica composite Corn starch Coconut husk 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. 2012-11-14T01:35:00Z 2012-11-14T01:35:00Z 2011 Thesis http://hdl.handle.net/123456789/21754 en Universiti Malaysia Perlis (UniMAP) School of Materials Engineering
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
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
publisher	Universiti Malaysia Perlis (UniMAP)
publishDate	2012
url	http://dspace.unimap.edu.my/xmlui/handle/123456789/21754
_version_	1643793449944612864
score	13.222552

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

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