Open AccessMiscibility improvement of LDPE/PVA blends by using silane-coupling agent
Author(s) -
Zuhair Jabbar Abdul Ameer,
Nabeel Hasan Hameed
Publication year - 2018
Publication title -
journal of university of babylon for engineering sciences
Language(s) - English
Resource type - Journals
ISSN - 2616-9916
DOI - 10.29196/jub.v26i3.621
Subject(s) - miscibility , materials science , differential scanning calorimetry , low density polyethylene , polymer blend , silane , polymer , scanning electron microscope , fourier transform infrared spectroscopy , composite material , ultimate tensile strength , chemical engineering , copolymer , physics , engineering , thermodynamics
Mixing two polymers usually results in an immiscible system, characterized by a coarse, easy to alter morphology, and poor adhesion between the phases. These blends have large size domains of dispersed phase and poor adhesion between them. Therefore, miscibility of polymer blend must be improved by using suitable additives such as compatibilizer. In this study 5% of silane 3-(trimethoxysilyl)propyl methacrylate is used as compatibilizer to improve the miscibility and compatibility of LDPE/PVA blends. The samples were prepared by using a twin screw extruder. LDPE and PVA have been mixed with different weight proportion. Several tests were carried out to identify the compatibility and miscibility of the blends such as tensile properties, hardness, density, Fourier transforms infrared FTIR, digital microscope, scanning electron microscopy SEM and differential scanning calorimetry DSC. Result show that tensile strength, young modulus, elongation at break, density and hardness is increased with silane addition to the blends. SEM and digital microscope shows an improvement in the miscibility due to the better interaction between the two polymers as silane is added.