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Thermal, mechanical, and adhesive properties of HDPE/reactive ethylene terpolymer blends
Author(s) -
Love C. T.,
Xian G.,
Karbhari V. M.
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24050
Subject(s) - materials science , high density polyethylene , differential scanning calorimetry , crystallinity , composite material , dynamic mechanical analysis , ultimate tensile strength , crystallization , polymer blend , izod impact strength test , polyethylene , scanning electron microscope , adhesive , copolymer , polymer , chemical engineering , physics , layer (electronics) , engineering , thermodynamics
Blends of high‐density polyethylene (HDPE) and a reactive ethylene terpolymer (RET) were developed as a protective coating material for steel. A morphological study with scanning electron microscopy (SEM) indicated that blends of HDPE and RET are immiscible, while high interaction between these two phases was found. Crystallization and thermomechanical behavior of the blends were investigated using differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). The crystallinity of HDPE decreased with the incorporation of RET slightly due to the disturbance of the highly viscous RET melt during crystallization. Tensile tests indicated that the addition of RET reduced both strength and modulus but increased the strain‐to‐break. Adhesion to steel substrates was improved with the incorporation of the RET component. An optimum composition of RET loading was detected to be in the range of 25–33 wt %, leading to the best adhesive performance, high tensile strength, and strain‐to‐failure of the blend material. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 331–338, 2007