Relationship between Crystallinity of Linear Low-Density Polyethylene (LLDPE) and Resistivity-Temperature Property of the LLDPE/Ni Composites

KONO Akihiko, KAWADAI Satoshi, YAMAMOTO Masashi, HORIBE Hideo

doi:10.1295/koron.67.296

Bibliographic Information

Other Title

直鎖状低密度ポリエチレン（ＬＬＤＰＥ）の結晶化度と　ＬＬＤＰＥ／Ｎｉ　複合材料の抵抗率－温度特性との関係

Description

We have investigated effects of the crystallinity (φ_c) of linear low-density polyethylene (LLDPE) and Ni content (C_Ni) on the electrical properties [the resistivity at room temperature (ρ_L) and positive temperature coefficient (PTC) effect of resistivity] of the LLDPE/Ni conductive polymer composites. The effect on ρ_L and PTC varied depending on φ_c and C_Ni even for samples with the same LLDPE (having the same melting-point). ρ_L decreased with increasing φ_c and/or C_Ni. Ni particles are localized in the amorphous matrix of LLDPE, and form the conductive paths. We concluded that many conductive paths are formed by increasing φ_c and/or C_Ni because the connection of Ni particles becomes tighter with increasing φ_c and/or C_Ni. The inflection-point temperature of the PTC curve (transition temperature of the PTC effect) of composites are 30 to 60°C lower than the melting-point of LLDPE when the φ_c of LLDPE is low. We clarified that the PTC effect appears from only a small cubical expansion of LLDPE even without melting of LLDPE.<br>

Journal

KOBUNSHI RONBUNSHU

KOBUNSHI RONBUNSHU 67 (5), 296-303, 2010

The Society of Polymer Science, Japan

Keywords

Details 詳細情報について

CRID: 1390001206524681600

NII Article ID: 130004489257

DOI: 10.1295/koron.67.296

ISSN: 18815685; 03862186

Text Lang: ja

Data Source

JaLC
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CiNii Articles

Abstract License Flag: Disallowed

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